Nardini, E., Risaliti, G., Salvati, M., Sani, E., Watabe, Y., Marconi, A., ...
We present a 5-8 micron analysis of the Spitzer-IRS spectra of 71 ultraluminous infrared galaxies (ULIRGs) with redshift z < 0.15, devoted to the study of the role of active galactic nuclei (AGN) and...
Marconi, A., Axon, D., Maiolino, R., Nagao, T., Pietrini, P., Risaliti, G., ...
The application of the virial theorem to the Broad Line Region of Active Galactic Nuclei allows Black Hole mass estimates for large samples of objects at all redshifts. In a recent paper we showed...
Episodic Random Accretion and the Cosmological Evolution of Supermassive Black Hole Spins (2009)
Hu, C., King, A. R., Marconi, A., ...
The growth of supermassive black holes (BHs) located at the centers of their host galaxies comes mainly from accretion of gas, but how to fuel them remains an outstanding unsolved problem in quasar...
The AGN/starburst content in high redshift ULIRGs (2009)
Watabe, Y., Risaliti, G., Salvati, M., Nardini, E., Sani, E., Marconi, A.
We apply a simple model, tested on local ULIRGs, to disentangle the active galactic nucleus (AGN) and starburst contributions in submillimiter and 24um-selected ULIRGs observed with the Spitzer-IRS...
Mannucci, F., Cresci, G., Maiolino, R., Marconi, A., Pastorini, G., Pozzetti, L., ...
We present the first results of a project, LSD, aimed at obtaining spatially-resolved, near-infrared spectroscopy of a complete sample of Lyman-Break Galaxies at z~3. Deep observations with adaptive...
The metallicity of the most distant quasars (2009)
Juarez, Y., Maiolino, R., Mujica, R., Pedani, M., Marinoni, S., Nagao, T., ...
We investigate the metallicity of the broad line region (BLR) of a sample of 30 quasars in the redshift range 4
Milli-arcsecond Astrophysics with VSI, the VLTI Spectro-imager in the ELT Era (2009)
Malbet, F, Buscher, D, Weigelt, G, Garcia, P, Gai, M, Lorenzetti, D, ...
Nowadays, compact sources relatively warm like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei can...
Milli-arcsecond Astrophysics with VSI, the VLTI Spectro-imager in the ELT Era (2009)
Malbet, F., Buscher, D., Weigelt, G., Garcia, P., Gai, M., Lorenzetti, D., ...
Nowadays, compact sources relatively warm like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei can...
Weighing black holes from zero to high redshift (2008)
Marconi, A., Axon, D., Maiolino, R., Nagao, T., Pietrini, P., Robinson, A., ...
The application of the virial theorem provides a tool to estimate supermassive black hole (BH) masses in large samples of active galactic nuclei (AGN) with broad emission lines at all redshifts and...
VSI: the VLTI spectro-imager (2008)
Malbet, F., Buscher, D., Weigelt, G., Garcia, P., Gai, M., Lorenzetti, D., ...
The VLTI Spectro Imager (VSI) was proposed as a second-generation instrument of the Very Large Telescope Interferometer providing the ESO community with spectrally-resolved, near-infrared images at...
VSI: the VLTI spectro-imager (2008)
Malbet, F, Buscher, D, Weigelt, G, Garcia, P, Gai, M, Lorenzetti, D, ...
Optical and Infrared Interferometry.
AMAZE. I. The evolution of the mass-metallicity relation at z>3 (2008)
Maiolino, R., Nagao, T., Grazian, A., Cocchia, F., Marconi, A., Mannucci, F., ...
We present initial results of an ESO-VLT large programme (AMAZE) aimed at determining the evolution of the mass-metallicity relation at z>3 by means of deep near-IR spectroscopy. Gas metallicities...
L. Testi, F. D'Antona, F. Ghinassi, J. Licandro, A. Magazzu, R. Maiolino, ...
We present complete near-infrared (0.85--2.45 m), low-resolution (100) spectra of a sample of 26 disk L-dwarfs with reliable optical spectral type classification.
Risaliti, E. Nardini G., Salvati, M., Sani, E., Imanishi, M., Marconi, A., Maiolino, R.
We present an analysis of the 5-8 micron Spitzer-IRS spectra of a sample of 68 local Ultraluminous Infrared Galaxies (ULIRGs). Our diagnostic technique allows a clear separation of the active...
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era (2008)
Malbet, F., Buscher, D., Weigelt, G., Garcia, P., Gai, M., Lorenzetti, D., ...
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei can be investigated...
First AMBER/VLTI Observations of Hot Massive Stars (2008)
Petrov, R. G., Millour, F., Chesneau, O., Weigelt, G., Bonneau, D., Stee, Ph., ...
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some preliminary results of...
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era (2008)
Malbet, F., Buscher, D., Weigelt, G., Garcia, P., Gai, M., Lorenzetti, D., ...
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei can be investigated...
Milli-arcsecond astrophysics with VSI, the VLTI spectro-imager in the ELT era (2008)
Malbet, F., Buscher, D., Weigelt, G., Garcia, P., Gai, M., Lorenzetti, D., ...
Nowadays, compact sources like surfaces of nearby stars, circumstellar environments of stars from early stages to the most evolved ones and surroundings of active galactic nuclei can be investigated...
First AMBER/VLTI Observations of Hot Massive Stars (2008)
Petrov, R. G., Millour, F., Chesneau, O., Weigelt, G., Bonneau, D., Stee, Ph., ...
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some preliminary results of...
The evolution of the mass-metallicity relation at z~3 (2007)
Maiolino, R., Nagao, T., Grazian, A., Cocchia, F., Marconi, A., Mannucci, F., ...
We present preliminary results of an ESO-VLT large programme (AMAZE) aimed at determining the evolution of the mass-metallicity relation at z~3 by means of deep near-IR spectroscopy. Gas...
The contribution of very massive high-redshift SWIRE galaxies to the stellar mass function (2007)
Berta, S., Lonsdale, C. J., Polletta, M., Savage, R. S., Franceschini, A., Buttery, H., ...
Context. In the last couple of years a population of very massive (M_* > 10^(11) M_⊙), high-redshift (z ≥ 2) galaxies has been identified, but its role in galaxy evolution has not yet been fully...
ASTRONOMY AND ASTROPHYSICS 4.2.1997 LonGSp: the Gornergrat Longslit Infrared Spectrometer (2007)
L. Vanzi, M. Sozzi, G. Marcucci, A. Marconi, F. Mannucci, F. Lisi, ...
A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are:
A Near-Infrared Study Of The Planetary Nebula Ngc 2346 (2007)
Vicini Natta, B. Vicini, A. Natta, A. Marconi, L. Testi, D. Hollenbach
. This paper presents new near-infrared observations of the planetary nebula NGC 2346. The data include a broad K--band image, an image in the H 2 vibrationally excited 1-0S(1) line and K band slit...
Near Infrared Spectra of the Orion Bar (2007)
Marconi Testi, A. Marconi, L. Testi, A. Natta
. We have used the LONGSP spectrometer on the 1.5-m TIRGO telescope to obtain long slit spectra in the J, H, and K wavelength bands towards two positions along the Orion bar. These data have been...
Letter to the Editor: first results from ISO (2007)
Sws Spectroscopy, D. Lutz, E. Oliva, A. Marconi, H. Netzer, ...
. We present 2.5-45¯m ISO SWS spectra of the Circinus galaxy which is one of the closest spirals containing both a visually obscured Seyfert nucleus and circumnuclear starburst activity. In addition...
Spectropolarimetry of the Circinus galaxy (2007)
Oliva Marconi, E. Oliva, A. Marconi, A. Cimatti
. High quality 4500--6800 A spectropolarimetric observations of the Circinus galaxy are reported. These show polarized and relatively broad (FWHM¸3300 km/s) Hff (as well as marginal Hfi) arising...
Starburst superwind and LINER activity in NGC4945 (2007)
Moorwood Van, J. K. Kotilainen, A. Marconi, E. Oliva
. Spectra (3700-10000 A) and continuum + line images of NGC4945 at optical (V,R,Z,[O III],Hff+[N II]) and IR (J,H,K,L,H 2 ,Brfl) wavelengths reveal a conical wind--blown cavity. The Brfl and L band...
Astronomy Astrophysics manuscript no. (2007)
Will Be Inserted, E. Oliva, A. Marconi, R. Maiolino, L. Testi, F. Mannucci, ...
We report 0.9-1.4 m spectroscopic observations of NGC1068 collected during the commissioning phase of the near infrared camera spectrometer (NICS) of the Telescopio Nazionale Galileo (TNG). These...
The contribution of very massive high-redshift SWIRE galaxies to the stellar mass function (2007)
Berta, S., Lonsdale, C. J., Polletta, M., Savage, R. S., Franceschini, A., Buttery, H., ...
(Abridged) We selected high-z massive galaxies at 5.8 microns, in the SWIRE ELAIS-S1 field (1 sq. deg.). Galaxies with the 1.6 microns stellar peak redshifted into the IRAC bands (z~1-3, called...
3-5 micron spectroscopy of obscured AGNs in ULIRGs (2007)
Sani, E., Risaliti, G., Salvati, M., Maiolino, R., Marconi, A., Berta, S., ...
We present the results of infrared L-band (3-4 micron) and M-band (4-5 micron) VLT-ISAAC spectroscopy of five bright Ultraluminous InfraRed Galaxies (ULIRGs) hosting an AGN. From our analysis we...
Direct constraint on the distance of Gamma2 Velorum from AMBER/VLTI observations. (2007)
Millour, F., G. Petrov, R., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., ...
In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y² Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines...
Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 43-3 and NGC 4258. (2007)
Pastorini, G., Marconi, A., Capetti, A., Axon, D.J., Alonso-Herrero, A., Atkinson, J., ...
Direct constraint on the distance of Gamma2 Velorum from AMBER/VLTI observations. (2007)
Millour, F., G. Petrov, R., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., ...
In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y² Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines...
The contribution of very massive high-redshift SWIRE galaxies to the stellar mass function (2007)
Berta, S., Lonsdale, C. J., Polletta, M., Savage, R. S., Franceschini, A., Buttery, H., ...
Direct constraint on the distance of y2 Velorum from AMBER/VLTI observations (2006)
Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., ...
In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y2 Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines...
Evidence for strong evolution of the cosmic star formation density at high redshift (2006)
Mannucci, F., Buttery, H., Maiolino, R., Marconi, A., Pozzetti, L.
Deep HST/ACS and VLT/ISAAC data of the GOODS-South field were used to look for high-redshift galaxies in the rest-frame UV wavelength range and to study the evolution of the cosmic star-formation...
Tatulli, E., Isella, A., Natta, A., Testi, L., Marconi, A., Consortium, The AMBER
We investigate the origin of the $\mathrm{Br}\gamma$ emission of the Herbig Ae star HD104237 on Astronomical Unit (AU) scales. Using AMBER/VLTI at a spectral resolution R=1500 spatially resolve the...
Metals and dust in high redshift AGNs (2006)
Maiolino, R., Nagao, T., Marconi, A., Schneider, R., Bianchi, S., Pedani, M., ...
We summarize some recent results on the metallicity and dust properties of Active Galactic Nuclei (AGN) at high redshift (1
An asymmetry detected in the disk of Kappa CMa with the AMBER/VLTI (2006)
Meilland, Anthony, Millour, Florentin, Stee, Philippe, Domiciano De Souza, Armando, Petrov, Romain, Mourard, Denis, ...
Aims. We study the geometry and kinematics of the circumstellar environment of the Be star Kappa CMa in the Br gamma emission line and its nearby continuum. Methods. We use the VLTI/AMBER instrument...
Local supermassive black holes and relics of active galactic nuclei (2006)
Marconi, A., Comastri, A., Gilli, R., Hasinger, G., Hunt, L. K., Maiolino, R., ...
An asymmetry detected in the disk of Kappa CMa with the AMBER/VLTI (2006)
Meilland, Anthony, Millour, Florentin, Stee, Philippe, Domiciano De Souza, Armando, Petrov, Romain, Mourard, Denis, ...
Aims. We study the geometry and kinematics of the circumstellar environment of the Be star Kappa CMa in the Br gamma emission line and its nearby continuum. Methods. We use the VLTI/AMBER instrument...
The double AGN in NGC 6240 revealed through 3-5 micron spectroscopy (2005)
Risaliti, G., Sani, E., Maiolino, R., Marconi, A., Berta, S., Braito, V., ...
We present 3-5 micron spectroscopy of the interacting system NGC 6240, showing the presence of two active galactic nuclei. The brightest (southern) nucleus shows up with a starburst-like emission,...
Malbet, F., Benisty, M., De Wit, W.J., Kraus, S., Meilland, A., Millour, F., ...
The young stellar object MWC 297 is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT...
Malbet, F., Benisty, M., De Wit, W.J., Kraus, S., Meilland, A., Millour, F., ...
The young stellar object MWC 297 is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT...
Unveiling the nature of Ultraluminous Infrared Galaxies with 3-4 micron spectroscopy (2005)
Risaliti, G., Maiolino, R., Marconi, A., Sani, E., Berta, S., Braito, V., ...
We present the results of L-band spectroscopical observations of local bright ULIRGs, performed with ISAAC at the VLT. We discuss the L-band spectral features of seven single sources, and the...
First AMBER/VLTI observations of hot massive stars (2005)
Petrov, R. G., Millour, F., Chesneau, O., Weigelt, G., Bonneau, D., Stee, Ph., ...
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some preliminary results of...
First AMBER/VLTI observations of hot massive stars (2005)
Petrov, R., Millour, F., Chesneau, O., Weigelt, G., Bonneau, D., Stee, Ph., ...
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some preliminary results of...
First AMBER/VLTI observations of hot massive stars (2005)
Petrov, R., Millour, F., Chesneau, O., Weigelt, G., Bonneau, D., Stee, Ph., ...
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some preliminary results of...
The supermassive black hole in Centaurus A: a benchmark for gas kinematical measurements (2005)
Marconi, A., Pastorini, G., Pacini, F., Axon, D. J., Capetti, A., Macchetto, D., ...
We present new HST/STIS observations of Centaurus A. [SIII] 9533A was used to study the kinematics in the nuclear region with a 0.1" spatial resolution. The STIS data and the VLT/ISAAC spectra by...
Integral Field Spectroscopy of 23 Spiral Bulges (2005)
Batcheldor, D., Axon, D., Merritt, D., Hughes, M. A., Marconi, A., Binney, J., ...
We have obtained Integral Field Spectroscopy for 23 spiral bulges using INTEGRAL on the William Herschel Telescope and SPIRAL on the Anglo-Australian Telescope. This is the first 2D survey directed...
Hughes, M. A., Axon, D., Atkinson, J., Alonso-Herrero, A., Scarlata, C., Marconi, A., ...
We investigate the central regions of 23 spiral galaxies using archival NICMOS imaging and STIS spectroscopy. The sample is taken from our program to determine the masses of central massive black...
Atkinson, J. W., Collett, J. L., Marconi, A., Axon, D. J., Alonso-Herrero, A., Batcheldor, D., ...
We present Space Telescope Imaging Spectrograph emission-line spectra of the central regions of the spiral galaxies NGC 1300 and NGC 2748. From the derived kinematics of the nuclear gas we have found...
Malbet, F., Benisty, M., De Wit, W.J., Kraus, S., Meilland, A., Millour, F., ...
The young stellar object MWC 297 is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT...
Malbet, F., Benisty, M., De Wit, W.J., Kraus, S., Meilland, A., Millour, F., ...
The young stellar object MWC 297 is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT...
Automated Synthesis of Executable Web Service Compositions from BPEL4WS Processes (2005)
M. Pistore, P. Traverso, P. Bertoli, A. Marconi
We propose a technique for the automated synthesis of new composite web services. Given a set of abstract BPEL4WS descriptions of component services, and a composition requirement, we automatically...
Local Supermassive Black Holes and Relics of Active Galactic Nuclei (2004)
Marconi, A., Risaliti, G., Gilli, R., Hunt, L. K., Maiolino, R., Salvati, M.
We summarize a study where we test the hypothesis that local black holes (BH) are relics of AGN activity. We compare the mass function of BHs in the local universe with that expected from AGN relics,...
Nuclear properties of a sample of nearby spirals from STIS imaging (2004)
Scarlata, C., Stiavelli, M., Hughes, M., Axon, D., Alonso-Herrero, A., Atkinson, J., ...
We present surface photometry for the central regions of a sample of 48 spiral galaxies (mostly unbarred and barred of types Sbc or Sc) observed with the Space Telescope Imaging Spectrograph on board...
Nuclear star formation in the quasar PG1126-041 from adaptive optics assisted spectroscopy (2004)
Cresci, G., Maiolino, R., Marconi, A., Mannucci, F., Granato, G. L.
We present adaptive optics assisted spectroscopy of three quasars obtained with NACO at VLT. The high angular resolution achieved with the adaptive optics (~0.08"), joined to the diagnostic power of...
Science program of the AMBER consortium (2004)
Malbet, F., Driebe, T., Foy, R., Fraix-Burnet, D., Mathias, P., Marconi, A., ...
Scarlata, C., Stiavelli, M., Hughes, M.A., Axon, D.J., Alonso-Herrero, A., Atkinson, J., ...
Original article can be found at: http://www.iop.org/EJ/journal/aj Copyright American Astronomical Society DOI: 10.1086/423036 [Full text of this article is not available in the UHRA]
WS-GEN: A tool for the automated composition of semantic web services (2004)
M. Pistore, P. Bertoli, E. Cusenza, A. Marconi, P. Traverso
Abstract. This demo illustrates WS-GEN, a tool supporting the automated composition of web services. WS-GEN takes as input the description of a set of available services and a “business requirement...
Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background (2003)
Marconi, A., Risaliti, G., Gilli, R., Hunt, L. K., Maiolino, R., Salvati, M.
We quantify the importance of mass accretion during AGN phases in the growth of supermassive black holes (BH) by comparing the mass function of black holes in the local universe with that expected...
Revealing the active galactic nucleus in the superantennae through L-band spectroscopy (2003)
Risaliti, G., Maiolino, R., Marconi, A., Bassani, L., Berta, S., Braito, V., ...
We present an L-band spectrum of the Ultraluminous Infrared Galaxy IRAS 19254-7245 (the Superantennae), obtained with VLT-ISAAC. The high signal to noise ratio allows a study of the main spectral...
Elusive Active Galactic Nuclei (2003)
Maiolino, R., Comastri, A., Gilli, R., Nagar, N. M., Bianchi, S., Boeker, T., ...
A fraction of active galactic nuclei do not show the classical Seyfert-type signatures in their optical spectra, i.e. they are optically "elusive". X-ray observations are an optimal tool to identify...
Tadhunter, C., Marconi, A., Axon, D., Wills, K., Robinson, T. G., Jackson, N.
We use a combination of high spatial resolution optical and near-IR spectroscopic data to make a detailed study of the kinematics of the NLR gas in the near-nuclear regions of the powerful, FRII...
Astrophysical potential of the AMBER/VLTI instrument (2003)
Malbet, F., Blöcker, T., Foy, R., Fraix-Burnet, D., Mathias, P., Marconi, A., ...
An atlas of Hubble Space Telescope spectra and images of nearby spiral galaxies. (2003)
Hughes, M.A., Alonso-Herrero, A., Axon, D.J., Scarlata, C., Atkinson, J., Batcheldor, D., ...
Is there really a Black Hole at the center of NGC 4041? - Constraints from gas kinematics (2002)
Marconi, A., Axon, D. J., Capetti, A., Maciejewski, W., Atkinson, J., Batcheldor, D., ...
We present HST/STIS spectra of the Sbc spiral galaxy NGC 4041 which were used to map the velocity field of the gas in its nuclear region. We detect the presence of a compact (r~0.4" ~40 pc), high...
Spectro-Polarimetric search for hidden AGNs in four southern Ultraluminous Infrared Galaxies (2002)
Pernechele, C., Berta, S., Marconi, A., Bonoli, C., Bressan, A., Franceschini, A., ...
We report on a spectro-polarimetric analysis of four southern Ultra-Luminous Infrared Galaxies (ULIRGs), aimed at constraining the presence of hidden broad AGN lines. For IRAS 19254--7245 ({\sl The...
Nagar, N. M., Oliva, E., Marconi, A., Maiolino, R.
This letter presents incontrovertible evidence that NGC5506 is a Narrow Line Seyfert 1 (NLSy1). Our new 0.9-1.4 micron spectrum of its nucleus clearly shows the permitted OI 1.1287 micron line (with...
Palla, F., Galli, D., Marconi, A., Stanghellini, L., Tosi, M.
We present high resolution HST ultraviolet spectroscopy of NGC3242, the only planetary nebula with a measured abundance of 3He. The Space Telescope Imaging Spectrograph (STIS) has been used to...
Koekemoer, A. M., Grogin, N. A., Schreier, E. J., Giacconi, R., Gilli, R., Kewley, L., ...
We present HST/WFPC2 observations of a well-defined sample of 40 X-ray sources with X-ray fluxes above the detection threshold of the full 1 Msec Chandra Deep Field South (CDFS). The sensitivity and...
The Ly-edge paradox and the need for obscured QSOs (2001)
Maiolino, R., Salvati, M., Marconi, A., Antonucci, R. R. J.
Based on the most recent QSO ultraviolet spectra, the covering factor of the clouds of the Broad Line Region (BLR) is about 30%, or larger. This value would imply that in at least 30% of the QSOs our...
HST Imaging in the Chandra Deep Field South: I. Multiple AGN Populations (2001)
Schreier, E. J., Koekemoer, A. M., Grogin, N. A., Giacconi, R., Gilli, R., Kewley, L., ...
We present preliminary results from imaging three HST/WFPC2 fields in V and I within the Chandra Deep Field South (CDFS). HST's sensitivity and resolution are sufficient to reveal optical...
Testi, L., D'Antona, F., Ghinassi, F., Licandro, J., Magazzu', A., Maiolino, R., ...
We present complete near-infrared (0.85-2.45 um), low-resolution (~100) spectra of a sample of 26 disk L-dwarfs with reliable optical spectral type classification. The observations have been obtained...
Properties of the circumnuclear medium in Active Galactic Nuclei (2001)
Gilli, R., Risaliti, G., Severgnini, P., Maiolino, R., Marconi, A., Salvati, M.
We propose a classification scheme for the circumnuclear medium of AGNs based on their location in the A_V - N_H plane (related to dust absorption and gas absorption, respectively). We present...
A new population of soft X-ray weak quasars (2001)
Risaliti, G., Marconi, A., Maiolino, R., Salvati, M., Severgnini, P.
Quasars selected in optical surveys by means of their blue or UV excess are known to be strong emitters in the X-rays, except for Broad Absorption Line (BAL) objects. In this paper we study the X-ray...
Oliva, E., Marconi, A., Maiolino, R., Testi, L., Mannucci, F., Ghinassi, F., ...
We report 0.9-1.4 micron spectroscopic observations of NGC1068 collected during the commissioning phase of the near infrared camera spectrometer (NICS) of the Telescopio Nazionale Galileo (TNG)....
An X-ray and Near-IR spectroscopic analysis of the ULIRG IRAS 05189-2524 (2000)
Severgnini, P., Risaliti, G., Marconi, A., Maiolino, R., Salvati, M.
We present new, quasi-simultaneous hard X-ray and near-IR spectra of the ultraluminous infrared galaxy IRAS 05189-2524, and discuss them together with archival and literature data. The 1.9 Seyfert...
The black hole mass vs bulge mass relationship in spiral galaxies (2000)
Marconi, A., Axon, D., Atkinson, J., Binney, J., Capetti, A., Carollo, M., ...
We describe an on-going HST program aimed at determining the relationship between the nuclear black hole mass and bulge mass in spiral galaxies. We have selected a volume limited sample of 54 nearby...
Dust in active nuclei. II. Powder or gravel? (2000)
Maiolino, R., Marconi, A., Oliva, E.
In a companion paper, Maiolino et al. (2000) presented various observational evidences for "anomalous" dust properties in the circumnuclear region of AGNs and, in particular, the reduced E(B-V)/N_H...
Dust in active nuclei. I. Evidence for "anomalous" properties (2000)
Maiolino, R., Marconi, A., Salvati, M., Risaliti, G., Severgnini, P., La Franca, F., ...
We present observational evidences that dust in the circumnuclear region of AGNs has different properties than in the Galactic diffuse interstellar medium. By comparing the reddening of optical and...
Capetti, A., Schreier, E. J., Axon, D. J., Young, S., Hough, J. H., Clark, S., ...
We report results from HST/NICMOS 2 micron imaging polarimetry of the central region of Centaurus A. In the vicinity of the nucleus we observe a complex polarization structure which we explain by a...
Sub-mm and X-ray background: two unrelated phenomena? (2000)
Severgnini, P., Maiolino, R., Salvati, M., Axon, D., Cimatti, A., Fiore, F., ...
Obscured AGNs are thought to contribute a large fraction of the hard X-ray background (2-10 keV), and have also been proposed as the powerhouse of a fraction of the SCUBA sources which make most of...
The Elusive Active Nucleus of NGC 4945 (2000)
Marconi, A., Oliva, E., Van Der Werf, P. P., Maiolino, R., Schreier, E. J., Macchetto, F., ...
We present new HST NICMOS observations of NGC 4945, a starburst galaxy hosting a highly obscured active nucleus that is one of the brightest extragalactic sources at 100 keV. The HST data are...
The variability of the Seyfert galaxy NGC 2992: the case for a revived AGN (2000)
Gilli, R., Maiolino, R., Marconi, A., Risaliti, G., Dadina, M., Weaver, K. A., ...
We report the transition to an active state of the nucleus in the Seyfert 1.9 galaxy NGC 2992, discovered by means of new hard X-ray data. While the 2-10 keV flux declined by a factor of ~ 20 from...
The elusive active nucleus of NGC 4945 (2000)
Marconi, A., Oliva, E., Maiolino, R., Schreier, E.J., Macchetto, F., ...
The elusive active nucleus of NGC 4945 (2000)
Marconi, A., Oliva, E., Maiolino, R., Schreier, E.J., Macchetto, F., ...
BeppoSAX unveils the nuclear component in NGC 6240 (1999)
Vignati, P., Molendi, S., Matt, G., Guainazzi, M., Antonelli, L. A., Bassani, L., ...
The direct nuclear X-ray emission of the ultraluminous IRAS galaxy NGC 6240 has been observed for the first time by BeppoSAX. It is seen through an absorber with N_H=2*10^{24} cm^{-2}. The 2-10 keV...
Infrared 3D Observations of Nearby Active Galaxies (1999)
Maiolino, R., Thatte, N., Alonso-Herrero, A., Lutz, D., Marconi, A.
We present multi-wavelength imaging observations of three nearby and famous active galaxies obtained with NICMOS, ISOCAM and the MPE near-IR integral field spectrometer. The data reveal a variety of...
Soft X-ray spectroscopy of Compton-thick Seyfert 2 galaxies with BeppoSAX (1999)
Guainazzi, M., Matt, G., Antonelli, L. A., Bassani, L., Fabian, A. C., Maiolino, R., ...
We present a X-ray spectroscopic study of the bright Compton-thick Seyfert 2s NGC1068 and the Circinus Galaxy, performed with BeppoSAX. Matt et al. (1997 and 1998) interpreted the spectrum above 4...
HST FOC spectroscopy of the NLR of NGC 4151. I. Gas kinematics (1999)
Winge, Claudia, Axon, David J., Macchetto, F. D., Capetti, A., Marconi, A.
We present the results from a detailed kinematic analysis of both ground-based, and Hubble Space Telescope/Faint Object Camera long-slit spectroscopy at sub-arcsec spatial resolution, of the...
The origin of the Narrow Line Region of Mrk 3: an overpressured jet cocoon (1998)
Capetti, A., Axon, D. J., Macchetto, F. D., Marconi, A., Winge, C.
We have obtained HST FOC long-slit optical spectroscopy of the Narrow Line Region of the Seyfert 2 galaxy Mrk 3. In the region cospatial with the radio-jet the velocity field is highly perturbed and...
Matt, G., Guainazzi, M., Maiolino, R., Molendi, S., Perola, G. C., Antonelli, L. A., ...
The Circinus Galaxy has been observed, for the first time above 10 keV, by BeppoSAX. An excess emission above the extrapolation of the best fit 0.1--10 keV spectrum is apparent in the PDS data. The...
Oliva, E., Marconi, A., Moorwood, A. F. M.
Spectra of extranuclear clouds within the ionization cone of Circinus galaxy are presented and modelled assuming photoionization by the Seyfert 2 nucleus but no preconceived assumption concerning the...
A near-infrared study of the planetary nebula NGC 2346 (1998)
Vicini, B., Natta, A., Marconi, A., Testi, L., Hollenbach, D., Draine, B. T.
This paper presents new near-infrared observations of the planetary nebula NGC 2346. The data include a broad K-band image, an image in the H2 vibrationally excited 1-0S(1) line and K band slit...
Milazzo,Guilio, Marconi,A., Palma,C., Struck,B., Weill,M. E.
The electrodes Pt-H2/H(+)Br(-) and Ag/AgBr/Br(-)K(+) were investigated for the true temperature coefficient of their electric tension. The measurement at 25C and 35C were extended over the...
Jet driven motions in the Narrow Line region of NGC1068 (1998)
Axon, D. J., Marconi, A., Capetti, A., Macchetto, F. D., Schreier, E. J., Robinson, A.
We have obtained HST FOC f/48 long-slit spectroscopy of the inner 4" of the Narrow Line Region of NGC 1068 between 3500-5400A with a spectral resolution of 1.78A/pixel. At a spatial scale of 0.0287"...
Spectropolarimetry of the Circinus Galaxy (1997)
Oliva, E., Marconi, A., Cimatti, A., Alighieri, S. Di Serego
High quality 4500-6800 A spectropolarimetric observations of the Circinus galaxy are reported. These show polarized and relatively broad (FWHM~3300 km/s) Halpha (as well as marginal Hbeta) arising...
Near Infrared Spectra of the Orion Bar (1997)
Marconi, A., Testi, L., Natta, A., Walmsley, C. M.
We have used the LONGSP spectrometer on the 1.5-m TIRGO telescope to obtain long slit spectra in the J, H, and K wavelength bands towards two positions along the Orion bar. These data have been...
Hard X--ray detection of NGC 1068 with BeppoSAX (1997)
Matt, G., Guainazzi, M., Frontera, F., Bassani, L., Brandt, W. N., Fabian, A. C., ...
We report on the first detection above ~10 keV of the archetypal Compton-thick Seyfert 2 galaxy NGC 1068. This detection, obtained with the PDS instrument onboard BeppoSAX in the 20-100 keV range,...
The supermassive black hole of M87 and the kinematics of its associated gaseous disk (1997)
Macchetto, F., Marconi, A., Axon, D. J., Capetti, A., Sparks, W., Crane, P.
We have obtained long-slit observations of the circumnuclear region of M87 at three different locations, with a spatial sampling of 0.028" using the Faint Object Camera f/48 spectrograph on board...
Is there really a super-massive black hole in M87? (1997)
Marconi, A., Axon, D. J., Macchetto, F. D., Capetti, A., Sparks, W. B., Crane, P.
We present the first HST long-slit spectrum of a gaseous disk around a candidate super-massive black-hole. The results of this study on the kinematics of the gaseous disk in M87 are a considerable...
The nucleotide sequence of Saccharomyces cerevisiae chromosome VII (1997)
Carbone, MLA, Albermann, K, Albers, M, Arroyo, J, Backes, U, ...
The complete nucleotide sequence of Saccharomyces cerevisiae chromosome VII has 572 predicted open reading frames (ORFs), of which 341 are new. No correlation was found between G+C content and gene...
LonGSp: the Gornergrat Longslit Infrared Spectrometer (1997)
Vanzi, L., Sozzi, M., Marcucci, G., Marconi, A., Mannucci, F., Lisi, F., ...
We present a near-infrared cooled grating spectrometer that has been developed at the Arcetri Astrophysical Observatory for the 1.5 m Infrared Telescope at Gornergrat (TIRGO). The spectrometer is...
The Nucleotide Sequence Of Saccharomyces Cerevisiae Chromosome Vii (1997)
Tettelin, H., Carbone, Mla., Albermann, K., Albers, M., Arroyo, J., Backes, U., ...
Mineralogia e mobilidade de cations de uma alteração intempérica de diabásio (1994)
Em uma seqüência de alteração intempérica de diabásio, situada no município de Capivari, SP, foram estudadas a mobilidade de cátions liberados no processo e a evolução mineralógica...
Count-to-mass conversion factors for asbestos fibres in the stack emissions of three industrial plants were calculated. Dust samples doriving from different working processes were collected...
MARCONI, A., CORRADETTI, E., MANNOZZI, A.
Personal and area measurements of airborne fibre concentrations were made during the installation of rock wool insulation blankets on walls and ceilings of deckhouses in ships at a naval dockyard....
MARCONI, A., MENICHINI, E., PAOLETTI, L.
A comparison has been made between light microscope (LM) and transmission electron microscope (TEM) counts of airborne chrysotile fibres, collected on 30 membrane filters from different working...
Sala, M, Zambruno, G, Vartanian, J P, Marconi, A, Bertazzoni, U, Wain-Hobson, S
A nonhomogeneous spatial distribution of human immunodeficiency virus type 1 quasispecies was observed for epidermal Langerhans cells purified from skin patches taken from a patient with AIDS soon...
Sala, M, Zambruno, G, Vartanian, J P, Marconi, A, Bertazzoni, U, Wain-Hobson, S
A nonhomogeneous spatial distribution of human immunodeficiency virus type 1 quasispecies was observed for epidermal Langerhans cells purified from skin patches taken from a patient with AIDS soon...
In vitro infection of human epidermal Langerhans' cells with HIV-1.
Ramazzotti, E, Marconi, A, Re, M C, Girolomoni, G, Cenacchi, G, Vignoli, M, ...
Epidermal Langerhans' cells (LC) from human immunodeficiency virus type-1 (HIV-1)-infected patients harbour HIV-1 proviral DNA and RNA. In the present study, we investigated whether LC from epidermis...