CO line emission in the halo of a radio galaxy at z = 2.6
We report the detection of luminous CO(3-2) line emission in the halo of the z = 2.6 radio galaxy (HzRG) TXS0828+193, which has no detected counterpart at optical to mid-infrared wavelengths implying a stellar mass ? few × 109 M and relatively low star formation rates. With the IRAM Plateau de Bure...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Wiley-Blackwell Publishing Ltd.
2009
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| Online Access: | http://hdl.handle.net/20.500.11937/47368 |
| _version_ | 1848757813625487360 |
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| author | Nesvadba, N. Neri, R. De Breuck, C. Lehnert, M. Dowries, D. Walter, F. Omont, A. Boulanger, F. Seymour, Nick |
| author_facet | Nesvadba, N. Neri, R. De Breuck, C. Lehnert, M. Dowries, D. Walter, F. Omont, A. Boulanger, F. Seymour, Nick |
| author_sort | Nesvadba, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report the detection of luminous CO(3-2) line emission in the halo of the z = 2.6 radio galaxy (HzRG) TXS0828+193, which has no detected counterpart at optical to mid-infrared wavelengths implying a stellar mass ? few × 109 M and relatively low star formation rates. With the IRAM Plateau de Bure Interferometer (PdBI), we find two CO emission-line components at the same position at ~80 kpc distance from the HzRG along the axis of the radio jet, with different blueshifts of few 100 km s-1 relative to the HzRG and a total luminosity of ~2 × 1010 K km s-1 pc2 detected at a total significance of ~8s HzRGs have significant galaxy overdensities and extended haloes of metal-enriched gas often with embedded clouds or filaments of denser material, and likely trace very massive dark matter haloes. The CO emission may be associated with a gas-rich, low-mass satellite galaxy with very little ongoing star formation, in contrast to all previous CO detections of galaxies at similar redshifts. Alternatively, the CO may be related to a gas cloud or filament and perhaps jet-induced gas cooling in the outer halo, somewhat in analogy with extended CO emission found in low-redshift galaxy clusters. © 2009 The Authors. Journal compilation © 2009 RAS. |
| first_indexed | 2025-11-14T09:34:04Z |
| format | Journal Article |
| id | curtin-20.500.11937-47368 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:34:04Z |
| publishDate | 2009 |
| publisher | Wiley-Blackwell Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-473682017-09-13T14:12:16Z CO line emission in the halo of a radio galaxy at z = 2.6 Nesvadba, N. Neri, R. De Breuck, C. Lehnert, M. Dowries, D. Walter, F. Omont, A. Boulanger, F. Seymour, Nick We report the detection of luminous CO(3-2) line emission in the halo of the z = 2.6 radio galaxy (HzRG) TXS0828+193, which has no detected counterpart at optical to mid-infrared wavelengths implying a stellar mass ? few × 109 M and relatively low star formation rates. With the IRAM Plateau de Bure Interferometer (PdBI), we find two CO emission-line components at the same position at ~80 kpc distance from the HzRG along the axis of the radio jet, with different blueshifts of few 100 km s-1 relative to the HzRG and a total luminosity of ~2 × 1010 K km s-1 pc2 detected at a total significance of ~8s HzRGs have significant galaxy overdensities and extended haloes of metal-enriched gas often with embedded clouds or filaments of denser material, and likely trace very massive dark matter haloes. The CO emission may be associated with a gas-rich, low-mass satellite galaxy with very little ongoing star formation, in contrast to all previous CO detections of galaxies at similar redshifts. Alternatively, the CO may be related to a gas cloud or filament and perhaps jet-induced gas cooling in the outer halo, somewhat in analogy with extended CO emission found in low-redshift galaxy clusters. © 2009 The Authors. Journal compilation © 2009 RAS. 2009 Journal Article http://hdl.handle.net/20.500.11937/47368 10.1111/j.1745-3933.2009.00631.x Wiley-Blackwell Publishing Ltd. unknown |
| spellingShingle | Nesvadba, N. Neri, R. De Breuck, C. Lehnert, M. Dowries, D. Walter, F. Omont, A. Boulanger, F. Seymour, Nick CO line emission in the halo of a radio galaxy at z = 2.6 |
| title | CO line emission in the halo of a radio galaxy at z = 2.6 |
| title_full | CO line emission in the halo of a radio galaxy at z = 2.6 |
| title_fullStr | CO line emission in the halo of a radio galaxy at z = 2.6 |
| title_full_unstemmed | CO line emission in the halo of a radio galaxy at z = 2.6 |
| title_short | CO line emission in the halo of a radio galaxy at z = 2.6 |
| title_sort | co line emission in the halo of a radio galaxy at z = 2.6 |
| url | http://hdl.handle.net/20.500.11937/47368 |