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THE STELLAR, MOLECULAR GAS, AND DUST CONTENT OF THE HOST GALAXIES OF TWO z similar to 2.8 DUST-OBSCURED QUASARS
| Indexado |
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| DOI | 10.1088/0004-6256/142/6/196 | ||||
| Año | 2011 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
We present optical through radio observations of the host galaxies of two dust-obscured, luminous quasars selected in the mid-infrared, at z = 2.62 and z = 2.99, including a search for CO emission. Our limits on the CO luminosities are consistent with these objects having masses of molecular gas less than or similar to 10(10) M-circle dot, several times less than those of luminous submillimeter-detected galaxies at comparable redshifts. Their near-infrared spectral energy distributions, however, imply that these galaxies have high stellar masses (similar to 10(11)-10(12) M-circle dot). The relatively small reservoirs of molecular gas and low dust masses are consistent with them being relatively mature systems at high-z.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Lacy, M. | Hombre |
Natl Radio Astron Observ - Estados Unidos
National Radio Astronomy Observatory - Estados Unidos |
| 2 | Petric, Andreea O. | Mujer |
CALTECH - Estados Unidos
California Institute of Technology - Estados Unidos |
| 3 | Martinez-Sansigre, A. | - |
Univ Portsmouth - Reino Unido
University of Portsmouth - Reino Unido SEPit Net - Reino Unido |
| 4 | Ridgway, S. E. | Mujer |
Natl Opt Astron Observ - Chile
Cerro Tololo Inter American Observatory - Chile |
| 5 | Sajina, Anna | Mujer |
Tuffs Univ - Estados Unidos
Tufts University - Estados Unidos |
| 6 | URRUTIA, TANYA CAROLINE | Mujer |
CALTECH - Estados Unidos
Spitzer Science Center - Estados Unidos California Institute of Technology - Estados Unidos |
| 7 | Rigopoulou, Dimitra | Mujer |
Univ Sussex - Reino Unido
University of Sussex - Reino Unido |
| Fuente |
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| National Aeronautics and Space Administration |
| Associated Universities, Inc. |
| National Aeronautics and Space Administration, Science Mission Directorate, Planetary Astronomy Program |
| Agradecimiento |
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| We thank Chris Carilli for helpful advice on EVLA observations, Hana Schumacher for providing a more accurate estimate of the CO (1-0) luminosity for one of the high-redshift radio-intermediate type-2 quasars, and the referee for comments that significantly improved the manuscript. The National Radio Astronomy Observatory is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc. Observations reported here were obtained at the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona. MMT time was granted by NOAO through the Telescope System Instrumentation Program (TSIP). TSIP is funded by NSF. M. L. and A. P. were visiting astronomers at the Infrared Telescope Facility, which is operated by the University of Hawaii under Cooperative Agreement no. NNX-08AE38A with National Aeronautics and Space Administration, Science Mission Directorate, Planetary Astronomy Program. The NASA/IPAC Extragalactic Database (NED) and Infrared Science Archive (IRSA) are operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia with significant participation from NASA. |
