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Biases and Uncertainties in Physical Parameter Estimates of Lyman Break Galaxies from Broad-band Photometry
Seong-Kook Lee, Rafal Idzi, Henry C. Ferguson +3
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…
Cosmic dynamics in the era of Extremely Large Telescopes
J. Liske, A. Grazian, E. Vanzella +24
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…
Dense gas in luminous infrared galaxies
W. A. Baan, C. Henkel, A. F. Loenen +2
Molecules that trace the high-density regions of the interstellar medium have been observed in (ultra-)luminous (far-)infrared galaxies, in order to initiate multiple-molecule mult…
A Population of Massive and Evolved Galaxies at z$\ga$5
T. Wiklind, M. Dickinson, H. C. Ferguson +4
We report results from a search for massive and evolved galaxies at z>5 in the GOODS southern field. Combining HST ACS, VLT ISAAC and Spitzer IRAC photometric data, we develop a co…
Upper limits to the water abundance in starburst galaxies
C. D. Wilson, R. S. Booth, A. O. H. Oloffson +11
We have searched for emission from the 557 GHz ortho-water line in the interstellar medium of six nearby starburst galaxies. We used the Odin satellite to observe the 1_10-1_01 tra…
Distribution of the molecular absorption in front of the quasar B0218+357
S. Muller, M. Guelin, F. Combes +1
The line of sight to the quasar B0218+357, one of the most studied lensed systems, intercepts a z=0.68 spiral galaxy, which splits its image into two main components A and B, separ…
A Comparison between Anomalous 6-cm HCO Absorption and CO(1-0) Emission in the L1204/S140
Monica Ivette Rodriguez, Tommy Wiklind, Ronald J. Allen +2
We report observations of the dust cloud L1204 with the Onsala 25-m telescope in the 6 cm (1) transition of \htco. The observed region includes the S140 H arc. Thi…
Highly-excited CO emission in APM08279+5255 at z=3.9
A. Weiss, D. Downes, R. Neri +5
We report the detection of the CO 4-3, 6-5, 9-8, 10-9, and 11-10 lines in the Broad Absorption Line quasar APM08279+5255 at z=3.9 using the IRAM 30m telescope. We also present IRAM…
Molecular oxygen in the rho Ophiuchi cloud
B. Larsson, R. Liseau, L. Pagani +56
Molecular oxygen, O2 has been expected historically to be an abundant component of the chemical species in molecular clouds and, as such, an important coolant of the dense interste…
Anomalous H_2CO Absorption Towards the Galactic Anticenter: A Blind Search for Dense Molecular Clouds
Monica Ivette Rodriguez, Ronald J. Allen, Laurent Loinard +1
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…
Atomic Carbon in APM 08279+5255 at z=3.91
J. Wagg, D. J. Wilner, R. Neri +2
We present a detection of [CI] line emission in the lensed quasar APM 08279+5255 at z=3.91 using the IRAM Plateau de Bure interferometer. The [CI] line velocity and width are simil…
NICMOS Status
Roelof S. de Jong, Santiago Arribas, Elizabeth Barker +15
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 t…
Constraints on changes in fundamental constants from a cosmologically distant OH absorber/emitter
N. Kanekar, C. L. Carilli, G. I. Langston +7
We have detected the four 18cm OH lines from the gravitational lens toward PMN J0134-0931. The 1612 and 1720 MHz lines are in conjugate absorption and emission, prov…
Evidence for a Massive Post-Starburst Galaxy at z ~ 6.5
B. Mobasher, M. Dickinson, H. C. Ferguson +26
We present results from a search for high-redshift J--band ``dropout'' galaxies in the portion of the GOODS southern field that is covered by extremely deep imaging from the Hubble…
Direct evidence for an early reionization of the Universe?
N. Panagia, S. M. Fall, B. Mobasher +5
We examine the possible reionization of the intergalactic medium (IGM) by the source UDF033238.7-274839.8 (hereafter HUDF-JD2), which was discovered in deep {\it HST}/VLT/{\it Spit…
Molecular gas in the galaxy M83. II - Kinematics of the molecular gas
A. A. Lundgren, H. Olofsson, T. Wiklind +1
We present the kinematics of the molecular gas in the barred spiral galaxy M83 (NGC5236). The study is based on ^{12}CO(J=1--0 and 2--1) observations with the Swedish-ESO Submillim…
Molecular gas in the galaxy M83. I - The molecular gas distribution
A. A. Lundgren, T. Wiklind, H. Olofsson +1
We present CO(1-0) and CO(2-1) Swedish-ESO Submillimetre Telescope (SEST) observations of the barred spiral galaxy M83 (NGC5236). The maps cover the entire optical disk. The CO emi…
Photometric redshift using the far-infrared SED
Tommy Wiklind
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-lumino…
Gravitational Lensing at Millimeter Wavelengths
Tommy Wiklind, Danielle Alloin
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…
The Nature of Submm-Detected Galaxies
Duilia de Mello, T. Wiklind, C. Leitherer +1
We present high resolution VLT spectra of 2 submm-detected galaxies. Diagnostic stellar absorption lines (Starburst99) are used to analyse their stellar population. SMM J14011+0252…
Environmental effects in galaxies: Molecular Gas, Star Formation, and Activity
Duilia F. de Mello, Tommy Wiklind, Marcio A. G. Maia
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 spec…
Environmental Effects in Galaxies: The Data
Duilia F. de Mello, Marcio A. G. Maia, Tommy Wiklind
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…
Molecular gas and dust in NGC4550: A galaxy with two counterrotating stellar disks
T. Wiklind, C. Henkel
We report the detection of 1 10^7 M_sun of molecular gas in the central region of the S0/E7 galaxy NGC4550, inferred from observations of CO(1-0) emission. Dust is detected in HST…
Cold gas in elliptical galaxies
A. Georgakakis, A. M. Hopkins, A. Caulton +3
We explore the evolution of the cold gas (molecular and neutral hydrogen) of elliptical galaxies and merger remnants ordered into a time sequence on the basis of spectroscopic age…