A search for H i and OH absorption in z ≳ 3 CO emitters
| Autor: | Michael Pracy, R. Athreya, James R. Allison, Stephen J. Curran, Matthew Whiting, Elaine M. Sadler, C. Bignell, Francoise Combes |
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| Přispěvatelé: | The Royal College Sciences, Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Chaire Galaxies et cosmologie, Collège de France (CdF (institution)), École normale supérieure - Paris (ENS-PSL), Collège de France - Chaire Galaxies et cosmologie |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Luminous infrared galaxy
Physics [PHYS]Physics [physics] Radio galaxy Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Radiation Disc galaxy Critical value Astrophysics - Astrophysics of Galaxies 01 natural sciences Redshift 13. Climate action Space and Planetary Science 0103 physical sciences Disc 010306 general physics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics ComputingMilieux_MISCELLANEOUS Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 457 (4), pp.3666-3677. ⟨10.1093/mnras/stw089⟩ Monthly Notices of the Royal Astronomical Society, 2016, 457 (4), pp.3666-3677. ⟨10.1093/mnras/stw089⟩ |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | We present the results of a survey for HI 21-cm and OH 18-cm absorption in seven strong CO emitters at z > 3. Despite reaching limits comparable to those required to detect 21-cm absorption at lower redshifts, we do not detect either transition in any of the objects searched. We believe that this is due to the high redshift selection causing all of our targets to have ultra-violet luminosities above the critical value, where all of the atomic gas in the host galaxy disk is suspected to be ionised. However, not only are all of our targets bright in CO emission, but detection of CO above the critical UV luminosity is generally not uncommon. This suggests that the molecular gas is shielded from the radiation or is physically remote from the source of the continuum emission, as it appears to be from CO observations of high redshift radio galaxies. Comment: 12 pages, accepted by MNRAS |
| Databáze: | OpenAIRE |
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