A. M. Koekemoer, P. Goudfrooij, L. L. Dressel, Santiago Arribas, Elizabeth Barker, ...
Abstract. We provide an overview of the most important calibration aspects of the NICMOS instrument on board of HST. We describe the performance of the instrument after the installation of the NICMOS...
The 2005 HST Calibration Workshop Space Telescope Science Institute, 2005 (2009)
A. M. Koekemoer, P. Goudfrooij, L. L. Dressel, Santiago Arribas, L. Eddie Bergeron, Roelof De Jong, ...
and 12 (regular) calibration programs executed after the installation of the NICMOS Cooling System (NCS). The special calibrations on Cycle 13 were focussed on a follow up of the spectroscopic...
Lee, Seong-Kook, Idzi, Rafal, Ferguson, Henry C., Somerville, Rachel S., Wiklind, Tommy, Giavalisco, Mauro
We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and star formation...
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Curran, Stephen J., Whiting, Matthew T., Wiklind, Tommy, Webb, J. K., Murphy, M. T., Purcell, Cormac R.
We present the results of a z≥ 2.9 survey for H i 21-cm and molecular absorption in the hosts of radio quasars using the Giant Metrewave Radio Telescope and the Tidbinbilla 70-m telescope....
Cosmic dynamics in the era of Extremely Large Telescopes (2008)
Liske, Jochen, Grazian, Andrea, Vanzella, Eros, Dessauges, Miroslava, Viel, Matteo, Pasquini, Luca, ...
The redshifts of all cosmologically distant sources are expected to experience a small, systematic drift as a function of time due to the evolution of the Universe's expansion rate. A measurement of...
Curran, Stephen J., Whiting, Matthew T., Wiklind, Tommy, Webb, J. K., Murphy, M. T., Purcell, Cormac R.
We present the results of a z≥ 2.9 survey for H i 21-cm and molecular absorption in the hosts of radio quasars using the Giant Metrewave Radio Telescope and the Tidbinbilla 70-m telescope....
A Comparison between Anomalous 6-cm H$_2$CO Absorption and CO(1-0) Emission in the L1204/S140 (2007)
Rodriguez, Monica Ivette, Wiklind, Tommy, Allen, Ronald J., Escalante, Vladimir, Loinard, Laurent
We report observations of the dust cloud L1204 with the Onsala 25-m telescope in the 6 cm (1$_{11}-1_{10}$) transition of \htco. The observed region includes the S140 H${\alpha}$ arc. This spectral...
Helene Mclaughlin, Tommy Wiklind
This ISR will address a number of changes in the way the NICMOS focus is monitored. It will provide a detailed explanation of those changes and a step–by–step description of the new procedure....
Rodriguez, Monica Ivette, Allen, Ronald J., Loinard, Laurent, Wiklind, Tommy
We have carried out a blind search in the general direction of the Galactic Anticenter for absorption of the Cosmic Microwave Background (CMB) radiation near 4.83 GHz by molecular clouds containing...
De Jong, Roelof S., Arribas, Santiago, Barker, Elizabeth, Bergeron, Louis E., Bohlin, Ralph C., Calzetti, Daniela, ...
We provide an overview of the most important calibration aspects of the NICMOS instrument on board of HST. We describe the performance of the instrument after the installation of the NICMOS Cooling...
Gravitational Lensing at Millimeter Wavelengths (2005)
Wiklind, Tommy, Alloin, Danielle
With today\'s millimeter and submillimeter instruments observers use gravitational lensing mostly as a tool to boost the sensitivity when observing distant objects. This is evident through the...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
CODEX : measuring the expansion of the universe (2005)
Pasquini, Luca, Cristiani, Stefano, Dekker, Hans, Haehnelt, Martin, Molaro, Paolo, Pepe, Francesco, ...
CODEX, a high-resolution, super-stable spectrograph to be fed by OWL, the most powerful telescope ever conceived, will for the first time provide the possibility of directly measuring the change of...
On the colour-colour properties of the Extremely Red Objects (2003)
Bergstrom, Stefan, Wiklind, Tommy
The colours of the galaxy class known as Extremely Red Objects (EROs; R-K>5) are considered to be consistent with two distinct galaxy populations at high redshift: evolved ellipticals or young dusty...
Photometric redshift using the far-infrared SED (2003)
A method for using the sub-millimeter band to determine photometric redshifts of luminous high-z dusty galaxies is presented. It is based on the observation that local ultra-luminous IR galaxies show...
Gravitational Lensing at Millimeter Wavelengths (2002)
Wiklind, Tommy, Alloin, Danielle
With today's millimeter and submillimeter instruments observers use gravitational lensing mostly as a tool to boost the sensitivity when observing distant objects. This is evident through the...
Gravitational Lensing at Millimeter Wavelengths (2002)
Wiklind, Tommy, Alloin, Danielle
With today\'s millimeter and submillimeter instruments observers use gravitational lensing mostly as a tool to boost the sensitivity when observing distant objects. This is evident through the...
Gravitational Lensing at Millimeter Wavelengths (2002)
Wiklind, Tommy, Alloin, Danielle
With today\'s millimeter and submillimeter instruments observers use gravitational lensing mostly as a tool to boost the sensitivity when observing distant objects. This is evident through the...
Environmental Effects in Galaxies: The Data (2001)
De Mello, Duilia F., Maia, Marcio A. G., Wiklind, Tommy
We present optical and millimetric data for 47 intermediate Hubble type spiral galaxies located either in dense environments or in the field. We compare correlations between global parameters, such...
Environmental effects in galaxies: Molecular Gas, Star Formation, and Activity (2001)
De Mello, Duilia F., Wiklind, Tommy, Maia, Marcio A. G.
In order to study whether there is any correlation between nuclear activities, gas content, and the environment where galaxies reside, we have obtained optical and millimetric spectra for a...
Murphy, M. T., Webb, J. K., Flambaum, Victor V., Drinkwater, Michael J., Combes, Francoise, Wiklind, Tommy
Quasar (QSO) absorption spectra provide an extremely useful probe of possible cosmological variation in various physical constants. Comparison of HI 21-cm absorption with corresponding molecular...
Murphy, M. T., Webb, J. K., Flambaum, Victor V., Drinkwater, Michael J., Combes, Francoise, Wiklind, Tommy
Quasar (QSO) absorption spectra provide an extremely useful probe of possible cosmological variation in various physical constants. Comparison of HI 21-cm absorption with corresponding molecular...
Molecular absorption lines at high redshift (1997)
Wiklind, Tommy, Combes, Francoise
The four known molecular absorption line systems at redshifts z$=$0.25--0.89 are discussed. Two of the systems originate in the galaxy hosting the `background' AGN, while in two cases the absorption...
The complex molecular absorption line system at z=0.886 towards PKS1830-211 (1997)
Wiklind, Tommy, Combes, Francoise
New millimeter wave observations of the molecular absorption line system in the gravitational lens to PKS1830-211 at z=0.88582 is presented. Self-calibrated interferometer data shows unequivocally...
Molecular absorption lines at high redshift: PKS1413+135 (z=0.247) (1997)
Wiklind, Tommy, Combes, Francoise
A detailed study of the absorbing molecular clouds towards the radio source PKS1413+135, at a redshift z=0.247, is reported. Physical conditions are derived for the molecular gas in the frame work of...
Molecular gas in the elliptical galaxy NGC759. Interferometric CO observations (1997)
Wiklind, Tommy, Combes, Francoise, Henkel, Christian, Wyrowski, Friedrich
Interferometric observations of the CO(1-0) line in the elliptical galaxy NGC759 shows that it contains 2 10^9 Mo of molecular gas, confined to a circumnuclear ring with an average radius of only...
Molecular absorption and its time variations in Cen A (1997)
Wiklind, Tommy, Combes, Francoise
New high-quality absorption spectra of J=0-1 HCO+, HCN, HNC and the J=1-2 line of CS towards the radio core of Cen A are presented and analysed. In addition, the J=0-1 line of of H13CO+ has been...