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A Millimetre Survey of Starburst Dominated Ultraluminous Infrared Galaxies at z~2
J. D. Younger, A. Omont, N. Fiolet +6
We present millimetre observations of a sample of 12 high redshift ultraluminous infrared galaxies (ULIRGs) in the Extended Growth Strip (EGS). These objects were initially selecte…
Obscured and powerful AGN and starburst activities at z~3.5
M. Polletta, A. Omont, S. Berta +9
We report the discovery of two sources at z=3.867 and z=3.427 that exhibit powerful starburst and AGN activities. They benefit from data from radio to X rays from the CFHTLS-D1/SWI…
MAMBO 1.2mm observations of luminous starbursts at z~2 in the SWIRE fields
C. J. Lonsdale, M. Polletta, A. Omont +19
We report on--off pointed MAMBO observations at 1.2 mm of 61 Spitzer-selected star-forming galaxies from the SWIRE survey. The sources are selected on the basis of bright 24um flux…
Stellar populations in a standard ISOGAL field in the Galactic disk
S. Ganesh, A. Omont, U. C. Joshi +4
We aim to identify the stellar populations (mostly red giants and young stars) detected in the ISOGAL survey at 7 and 15micron towards a field (LN45) in the direction l=-45, b=0.0.…
Interferometric CO Observations of submillimeter-faint, radio-selected starburst galaxies at z~2
S. C. Chapman, R. Neri, F. Bertoldi +9
High-redshift, dust-obscured galaxies -- selected to be luminous in the radio but relatively faint at 850um -- appear to represent a different population from the ultra-luminous su…
Thermal Emission from Warm Dust in the Most Distant Quasars
R. Wang, C. L. Carilli, J. Wagg +9
We report new continuum observations of fourteen z~6 quasars at 250 GHz and fourteen quasars at 1.4 GHz. We summarize all recent millimeter and radio observations of the sample of…
Submillimeter observations of the J2142-4423 Lya protocluster at z = 2.38
A. Beelen, A. Omont, N. Bavouzet +9
We present observations aimed at exploring both the nature of Lya emitting nebulae (Lya blobs) at z=2.38 and the way they trace large scale structure (LSS), by exploring their prox…
SHARC-II 350 micron Observations of Thermal Emission from Warm Dust in z>=5 Quasars
Ran Wang, Jeff Wagg, Chris L. Carilli +10
We present observations of four z>= SDSS quasars at 350 micron with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations…
Molecules in galaxies
Alain Omont
The main achievements, current developments and prospects of molecular studies in external galaxies are reviewed. They are put in the context of the results of several decades of s…
High mass-loss AGB stars detected by MSX in the "intermediate" and "outer" Galactic bulge
D. K. Ojha, A. Tej, M. Schultheis +2
We present a study of MSX point sources in the Galactic bulge (|l| < 3 deg, 1 deg < |b| < 5 deg), observed at A, C, D and E-band (8 to 21 micron), with a total area ~ 48 deg^2. We…
Molecular gas in QSO host galaxies at z>5
R. Maiolino, R. Neri, A. Beelen +10
We present observations with the IRAM Plateau de Bure Interferometer of three QSOs at z>5 aimed at detecting molecular gas in their host galaxies as traced by CO transitions. CO (5…
Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
Chris J. Willott, Philippe Delorme, Alain Omont +15
The Canada-France High-z Quasar Survey (CFHQS) is an optical survey designed to locate quasars during the epoch of reionization. In this paper we present the discovery of the first…
Millimeter and Radio Observations of z~6 Quasars
Ran Wang, Chris Carilli, Alexandre Beelen +8
We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m…
Studying the first galaxies with ALMA
C. L. Carilli, F. Walter, R. Wang +7
We discuss observations of the first galaxies, within cosmic reionization, at centimeter and millimeter wavelengths. We present a summary of current observations of the host galaxi…
ISO Mid-Infrared Spectroscopy of Galactic Bulge AGB Stars
Joris A. D. L. Blommaert, Martin A. T. Groenewegen, Koryo Okumura +8
To study the nature of Bulge AGB stars and in particular their circumstellar dust, we have analysed mid-infrared spectra obtained with the ISOCAM CVF spectrometer in three Bulge fi…
Radio and millimeter observations of z~2 luminous QSOs
A. Petric, C. L. Carilli, F. Bertoldi +3
We present Very Large Array observations at 1.4 and 5 GHz of a sample of 16 quasi-stellar objects (QSOs) at z = 1.78 to 2.71. Half of the chosen quasars are bright at mm wavelength…
Recent star formation in the inner Galactic Bulge seen by ISOGAL. I - Classification of bright mid-IR sources in a test field
F. Schuller, A. Omont, I. S. Glass +3
Context: The stellar populations in the central region of the Galaxy are poorly known because of the high visual extinction and very great source density in this direction. Aims: T…
350 Micron Dust Emission from High Redshift Quasars
A. Beelen, P. Cox, D. J. Benford +5
We report detections of six high-redshift (1.8 < z < 6.4), optically luminous, radio-quiet quasars at 350 micron, using the SHARC II bolometer camera at the Caltech Submillimeter O…
Extinctions at 7um and 15um from the ISOGAL survey
B. W. Jiang, J. Gao, A. Omont +2
The extinction laws at 7um and 15um are derived for more than 120 sightlines in the inner Galactic plane based on the ISOGAL survey data and the near-infrared data from DENIS and 2…
First detection of [CII]158um at high redshift: vigorous star formation in the early universe
R. Maiolino, P. Cox, P. Caselli +10
We report the detection of the 2P_3/2 -> 2P_1/2 fine-structure line of C+ at 157.74 micron in SDSSJ114816.64+525150.3 (hereafter J1148+5251), the most distant known quasar, at z=6.…
86 GHz SiO maser survey of late-type stars in the Inner Galaxy III. Interstellar extinction and colours of the SiO targets
M. Messineo, H. J. Habing, K. M. Menten +3
We have determined extinction corrections for a sample of 441 late-type stars in the inner Galaxy, which we previously searched for SiO maser emission, using the 2MASS near-infrare…
An interferometric CO survey of luminous submm galaxies
T. R. Greve, F. Bertoldi, Ian Smail +9
In this paper we present results from an IRAM Plateau de Bure millimetre-wave Interferometer (PdBI) survey for CO emission towards radio-detected submillimetre galaxies (SMGs) with…
Detection of Two Massive CO Systems in 4C 41.17 at z = 3.8
Carlos De Breuck, Dennis Downes, Roberto Neri +4
We have detected CO(4-3) in the z=3.8 radio galaxy 4C 41.17 with the IRAM Interferometer. The CO is in two massive (M_dyn ~ 6 x 10^10 M_Sun) systems separated by 1.8" (13 kpc), and…
Atomic carbon in PSS 2322+1944, a quasar at redshift 4.12
J. Pety, A. Beelen, P. Cox +4
We report the detection of the 3P1 to 3P0 fine-structure line of neutral carbon in the z=4.12 quasar PSS 2322+1944, obtained at the IRAM Plateau de Bure interferometer. The CI 3P1-…