HIGHEST REDSHIFT IMAGE OF NEUTRAL HYDROGEN IN EMISSION: A CHILES DETECTION OF A STARBURSTING GALAXY AT z = 0.376
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8019 (United States)
- Department of Astronomy, University of Massachusetts, Amherst, MA 01003 (United States)
- Department of Astronomy, Columbia University, New York, NY 10027 (United States)
- National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801 (United States)
- International Centre for Radio Astronomy Research, The University of Western Australia, Crawley, WA 6009 (Australia)
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)
- Kapteyn Astronomical Institute, University of Groningen, Groningen (Netherlands)
- Department of Physics and Astronomy, West Virginia University, P.O. Box 6315, Morgantown, WV 26506 (United States)
- Max Planck Institute for Astronomy, Knigstuhl 17, D-69117 Heidelberg (Germany)
- Netherlands Institute for Radio Astronomy (ASTRON), Dwingeloo (Netherlands)
- Department of Astronomy, Yonsei University, Seoul 120–749 (Korea, Republic of)
Our current understanding of galaxy evolution still has many uncertainties associated with the details of the accretion, processing, and removal of gas across cosmic time. The next generation of radio telescopes will image the neutral hydrogen (H i) in galaxies over large volumes at high redshifts, which will provide key insights into these processes. We are conducting the COSMOS H i Large Extragalactic Survey (CHILES) with the Karl G. Jansky Very Large Array, which is the first survey to simultaneously observe H i from z = 0 to z ∼ 0.5. Here, we report the highest redshift H i 21 cm detection in emission to date of the luminous infrared galaxy COSMOS J100054.83+023126.2 at z = 0.376 with the first 178 hr of CHILES data. The total H i mass is (2.9 ± 1.0) × 10{sup 10} M {sub ⊙} and the spatial distribution is asymmetric and extends beyond the galaxy. While optically the galaxy looks undisturbed, the H i distribution suggests an interaction with a candidate companion. In addition, we present follow-up Large Millimeter Telescope CO observations that show it is rich in molecular hydrogen, with a range of possible masses of (1.8–9.9) × 10{sup 10} M {sub ⊙}. This is the first study of the H i and CO in emission for a single galaxy beyond z ∼ 0.2.
- OSTI ID:
- 22654306
- Journal Information:
- Astrophysical Journal Letters, Vol. 824, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
- Country of Publication:
- United States
- Language:
- English
Similar Records
Large-scale Structure in CHILES Using DisPerSE
THE MULTIWAVELENGTH SURVEY BY YALE-CHILE (MUSYC): DEEP MEDIUM-BAND OPTICAL IMAGING AND HIGH-QUALITY 32-BAND PHOTOMETRIC REDSHIFTS IN THE ECDF-S