U. Klaas

Details der Publikationsliste

Zeitraum

1996 - 2009

Anzahl

81

Co-Autoren

The HERSCHEL/PACS Spectrometer Pipeline (2009)

Schreiber, J. ; JFA; CORA, Wieprecht, E., De Jong, J., Wetzstein, M., Jacobson, J,, Huygen, Eric; U0013149 ;, ...

ESA’s Herschel Space Observatory, to be launched in 2009, is the first space observatory covering the full far-infrared and sub-millimeter wavelength range (60 - 670 μm). The Photodetector Array...

Determination of the cosmic far-infrared background level with the ISOPHOT instrument (2009)

Juvela, M., Mattila, K., Lemke, D., Klaas, U., Leinert, C., Kiss, Cs.

The cosmic infrared background (CIRB) consists mainly of the integrated light of distant galaxies. In the far-infrared the current estimates of its surface brightness are based on the measurements of...

The HERSCHEL/PACS Spectrometer Pipeline (2009)

Schreiber, J., Wieprecht, E., De Jong, J., Wetzstein, M., Jacobson, J., Huygen, R., ...

ESA's Herschel Space Observatory, to be launched in 2009, is the first space observatory covering the full far-infrared and sub-millimeter wavelength range (60 - 670 micron). The Photodetector Array...

Determination of the cosmic far-infrared background level with the ISOPHOT instrument (2009)

Juvela, M., Mattila, K., Lemke, D., Klaas, U., Leinert, C., Kiss, Cs

Context: The cosmic infrared background (CIRB) consists mainly of the integrated light of distant galaxies. In the far-infrared the current estimates of its surface brightness are based on the...

UK AstronomyTechnology Center, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, Scotland, UK (2007)

Cea Dsm Dapnia, G. J. Bendo, R. D. Joseph, M. Wells, P. Gallais, M. Haas, ...

Wehave observed a magnitude-limited sample of 78 galaxies chosen from the Revised Shapley-Ames Catalogue with ISOCAM at 10 m and with ISOPHOT at 60 m, 100m, and 180 m. We have complemented these data...

Isophot - Photometric Calibration Of Point Sources (2007)

B. Schulz, S. Huth, U. Kinkel, D. Lemke, J. Acosta, M. Braun, ...

We discuss the photometric calibration of ISOPHOT for point sources in the wavelength range from 3.2 to 240¯m for the aperture photometer (PHT-P) and the FIR camera section (PHT-C). To correct for...

The Starburst Galaxy Ngc 6090: An Iso View (2007)

Acosta-Pulido Klaas Laureijs, U. Klaas

We present ISOCAM and ISOPHOT observations of the galaxy pair NGC 6090. The SED derived from all ISO measurements is typical for strong starbursts which were triggered by the tidal interaction. With...

The ISOPHOT 170 µm Serendipity Survey. IV. The far-infrared sky atlas (2007)

Stickel, M., Krause, O., Klaas, U., Lemke, D.

Aims.To further increase the scientific utilization of the strip scanning measurements of the ISOPHOT Serendipity Survey (ISOSS), the slew data has been assembled to a sky atlas with ≈15% sky...

Uncovering Small Scale Structures in Near-Infrared Adaptive Optics Images (2006)

Stickel, M., Klaas, U.

Astronomical imaging data often contain structures with a very broad range of angular scales, where the features with the smaller scales are usually fainter than the surrounding extended brightness...

Multi-aperture photometry of extended IR sources with ISOPHOT. I. The nature of extended IR emission of planetary Nebulae (2006)

Klaas, U., Walker, H. J., Müller, T. G., Richards, P. J., Schreiber, J.

Context: .ISOPHOT multi-aperture photometry is an efficient method to resolve compact sources or to detect extended emission down to relatively faint levels with single detectors in the wavelength...

Exceptional H2 emission in the Antennae galaxies: Pre-starburst shocks from the galaxy collision (2005)

Haas, M., Chini, R., Klaas, U.

The collision of gas-rich galaxies is believed to produce strong shocks between their gas clouds which cause the onset of the observed bursts of extended star formation. However, the so far observed...

Determination of confusion noise for far-infrared measurements (2005)

Kiss, Cs., Klaas, U., Lemke, D.

We present a detailed assessment of the far-infrared confusion noise imposed on measurements with the ISOPHOT far-infrared detectors and cameras aboard the ISO satellite. We provide confusion noise...

No cold dust within the supernova remnant Cassiopeia A (2004)

Krause, O., Birkmann, S. M., Rieke, G. H., Lemke, D., Klaas, U., Hines, D. C., ...

A large amount (about three solar masses) of cold (18 K) dust in the prototypical type II supernova remnant Cassiopeia A was recently reported. It was concluded that dust production in type II...

Dust in 3CR radio galaxies: On the FR1-FR2 difference (2004)

Mueller, S. A. H., Haas, M., Siebenmorgen, R., Klaas, U., Meisenheimer, K., Chini, R., ...

We compare three 3CR samples of 11 FR1 galaxies, 17 FR2 galaxies and 18 lobe-dominated quasars contained in the ISO Data Archive. In contrast to the powerful FR2 galaxies with edge-brightened lobes,...

An Infrared Image of the Dust Disc Around Beta Pic (2004)

Heinrichsen, I., Walker, H. J., Klaas, U., Sylvester, R. J., Lemke, D.

The star, B Pictoris, is a normal main sequence star with a remnant disc of cool dust around it. We present observations of the B pic dust disc in the far infrared, obtained using the photometer...

Infrared Mapping of the Dust Around Main Sequence Stars (2004)

Heinrichsen, I., Walker, H., Klaas, U., Sylvester, R.

The photopolarimeter on ISO (ISOPHOT) has been used to investigate the dust discs around the four prototype Vega-like stars and several main sequence stars with excess infrared emission from IRAS...

Isophot - Photometric Calibration of Point Sources (2004)

Schulz, B., Huth, S., Kinkel, U., Lemke, D., Acosta, J., Braun, M., ...

We discuss the photometric calibration of ISOPHOT for point sources in the wavelength range from 3.2 to 240 ??or the aperture photometer and the FIR camera section.

Determination of confusion noise for far-infrared measurements (2004)

Kiss, Cs., Klaas, U., Lemke, D.

We present a detailed assessment of the far-infrared confusion noise imposed on measurements with the ISOPHOT far-infrared detectors and cameras aboard the ISO satellite. We provide confusion noise...

Unveiling the central parsec region of an AGN: the Circinus nucleus in the near infrared with the VLT (2004)

Prieto, M. Almudena, Meisenheimer, K., Marco, Olivier, Reunanen, Juha, Contini, Marcella, Clenet, Y., ...

VLT J- to M\p-band adaptive optics observations of the Circinus Galaxy on parsec scales resolve a central bright Ks-band source with a FWHM size of 1.9 $\pm$ 0.6 pc. This source is only visible at...

The ISOPHOT-MAMBO survey of 3CR radio sources: Further evidence for the unified schemes (2004)

Haas, M., Mueller, S. A. H., Bertoldi, F., Chini, R., Egner, S., Freudling, W., ...

We present the complete set of ISOPHOT observations of 3CR radio galaxies and quasars, which are contained in the ISO Data Archive, providing 75 mid- and far-infrared spectral energy distributions...

The small Magellanic Cloud in the far infrared. II. Global properties (2004)

Wilke, K., Klaas, U., Lemke, D., Mattila, K., Stickel, M., Haas, M.

We present global IR properties of the Small Magellanic Cloud using an ISOPHOT 170 ‚‚mu;m map and re-visited IRAS data. The integrated 170 ‚‚mu;m flux is 14 950 ‚‚plusmn; 2300 Jy, and the...

The ISOPHOT 170 µm Serendipity Survey II. The catalog of optically identified galaxies (2004)

Stickel, M., Lemke, D., Klaas, U., Krause, O., Egner, S.

The ISOPHOT Serendipity Sky Survey strip-scanning measurements covering ‚‚ap;15% of the far-infrared (FIR) sky at 170 ‚‚mu;m were searched for compact sources associated with optically identified...

The spiral galaxy M33 mapped in the FIR by ISOPHOT. A spatially resolved study of the warm and cold dust. (2003)

Hippelein,H., Haas,M., Tuffs,R.J., Lemke,D., Stickel,M., Klaas,U., ...

The Sc galaxy M 33 has been mapped with ISOPHOT in the far-infrared, at 60, 100, and 170 mum. The spatial resolution of these FIR maps allows the separation of spiral arms and interarm regions and...

The spiral galaxy M33 mapped in the FIR by ISOPHOT: A spatially resolved study of the warm and cold dust (2003)

Hippelein, H., Haas, M., Tuffs, R. J., Lemke, D., Stickel, M., Klaas, U., ...

The Sc galaxy M33 has been mapped with ISOPHOT in the far-infrared, at 60, 100, and 170mue. The spatial resolution of these FIR maps allows the separation of spiral arms and interarm regions and the...

Dust Temperatures in the Infrared Space Observatory Atlas of Bright Spiral Galaxies (2003)

Bendo, G J, Joseph, R D, Wells, M, Gallais, P, Haas, M, Heras, A M, ...

We examine far-infrared and submillimeter spectral energy distributions for galaxies in the Infrared Space Observatory Atlas of Bright Spiral Galaxies. For the 71 galaxies where we had complete...

The spiral galaxy M33 mapped in the FIR by ISOPHOT. A spatially resolved study of the warm and cold dust. (2003)

Hippelein, H., Haas, M., Tuffs, R.J., Lemke, D., Stickel, M., Klaas, U., ...

The Sc galaxy M 33 has been mapped with ISOPHOT in the far-infrared, at 60, 100, and 170 mum. The spatial resolution of these FIR maps allows the separation of spiral arms and interarm regions and...

The ISO view of Palomar-Green quasars (2003)

Haas, M., Klaas, U., Müller, S. A. H., Bertoldi, F., Camenzind, M., Chini, R., ...

Mining the ISO data archive we provide the complete ISO view of PG quasars containing 64 infrared spectral energy distributions between 5 and 200 mum. About half of the sample was supplemented by...

Small-scale structure of the galactic cirrus emission (2002)

Kiss, Cs., Abraham, P., Klaas, U., Lemke, D., Heraudeau, Ph., Del Burgo, C.

We examined the Fourier power spectrum characteristics of cirrus structures in 13 sky fields with faint to bright cirrus emission observed with ISOPHOT in the 90--200µm wavelength range in order...

A very young star forming region detected by the ISOPHOT Serendipity Survey (2002)

Krause, O., Lemke, D., Toth, L. V., Klaas, U., Haas, M., Stickel, M., ...

We present a multi-wavelength study of the star forming region ISOSS J 20298+3559, which was identified by a cross-correlation of cold compact sources from the 170 micron ISOPHOT Serendipity Survey...

The relation of PAH strength with cold dust in galaxies (2002)

Haas, M., Klaas, U., Bianchi, S.

Mid-infrared spectra and submillimetre maps are investigated for five galaxies covering a range of star forming activity. We find a good spatial coincidence between the 850 mum continuum emission and...

Far-Infrared Emission from Intracluster Dust in Abell Clusters (2001)

Stickel, M., Klaas, U., Lemke, D., Mattila, K.

The ISOPHOT instrument aboard ISO has been used to observe extended FIR emission of six Abell clusters. The raw profiles of the I_(120 um) / I_(180 um) surface brightness ratio including zodiacal...

ISOPHOT - Photometric Calibration of Point Sources (2001)

Schulz, B., Huth, S., Laureijs, R. J., Acosta-Pulido, J. A., Braun, M., Castaneda, H. O., ...

All observations by the aperture photometer (PHT-P) and the far-infrared (FIR) camera section (PHT-C) of ISOPHOT included reference measurements against stable internal fine calibration sources (FCS)...

Infrared to millimetre photometry of ultra-luminous IR galaxies: new evidence favouring a 3-stage dust model (2001)

Klaas, U., Haas, M., Mueller, S. A. H., Chini, R., Schulz, B., Coulson, I., ...

Infrared to millimetre spectral energy distributions have been obtained for 41 bright ultra-luminous infrared galaxies. The observations were carried out with ISOPHOT between 10 and 200 micron and...

Sky Confusion Noise in the Far-Infrared: Cirrus, Galaxies and the Cosmic Far-Infrared Background (2001)

Kiss, Cs., Abraham, P., Klaas, U., Juvela, M., Lemke, D.

We examined the sky confusion noise in 40 sky regions by analysing 175 far-infrared (90--200 $\mu$m) maps obtained with ISOPHOT, the photometer on-board the Infrared Space Observatory. For cirrus...

Dust emission from 3C radio galaxies and quasars: New ISO observations favour the unified scheme (2001)

Meisenheimer, K., Haas, M., Müller, S. A. H., Chini, R., Klaas, U., Lemke, D.

In order to test the unified scheme for luminous radio galaxies and quasars we observed 10 galaxy/quasar pairs from the 3CR catalogue with ISOPHOT at infrared wavelengths between 5 and 180 micron....

Deep far infrared ISOPHOT survey in "Selected Area 57", I. Observations and source counts (2000)

Linden-Voernle, M. J. D., Noergaard-Nielsen, H. U., Joergensen, H. E., Hansen, L., Hass, M., Klaas, U., ...

We present here the results of a deep survey in a 0.4 sq.deg. blank field in Selected Area 57 conducted with the ISOPHOT instrument aboard ESAs Infrared Space Observatory (ISO) at both 60 um and 90...

The 10-200 micron spectral energy distribution of the prototype Narrow-Line X-ray galaxy NGC 7582 (1999)

Radovich, M., Klaas, U., Acosta-Pulido, J., Lemke, D.

We present the spectral energy distribution (SED) between 10 and 200 micron obtained for the prototype Narrow-Line X-Ray Galaxy NGC 7582 with ISOPHOT, the photometer on board the Infrared Space...

Infrared Mapping of the dust disc around Vega (1997)

I. Heinrichsen, H. J. Walker, U. Klaas

ISOPHOT was used to perform high resolution 60¯m scans of Vega, and these were compared with those from fl Dra, to obtain a Gaussian width of 22 00 \Sigma 2 00 . The dust disc around Vega was...