| Type |
Article |
| Date |
1993-06 |
| Language |
English |
| Author(s) |
Encrenaz Pj1, 2, Combes F1, 2, Casoli F1, 2, Gerin M1, 2, Pagani L2, Horellou C2, Gac Christian2 |
| Affiliation(s) |
1 : ENS, CNRS, URA 336, 24 RUE LHOMOND, F-75231 PARIS 05, FRANCE.
2 : OBSERV MEUDON, DEMIRM, CNRS, URA 336, F-92195 MEUDON, FRANCE. |
| Source |
Astronomy & Astrophysics (0004-6361) (Edp Sciences S A), 1993-06 , Vol. 273 , N. 1 , P. L19-L22 |
| WOS© Times Cited |
11 |
| Keyword(s) |
INTERSTELLAR MEDIUM, MOLECULES, GALAXIES, INDIVIDUAL, IRAS10214+4724, GALAXIES, INTERSTELLAR MATTER, RADIO LINES, MOLECULAR, INTERSTELLAR |
| Abstract |
We have used the IRAM 30m telescope to search for rotational lines of water and molecular oxygen in the very distant galaxy IRAS 10214+4724 at a redshift of 2.286. We report the tentative detection of the 2(11) --> 2(02) para transition of H2O at 752.0 GHz. This would be the first time that a thermal rotational line of water is detected. The ortho transitions 1(10) --> 1(01) and 4(14) --> 3(21) at 556.9 and 380.2 GHz are not detected with intensities at most twice that of the detected 752 GHz line. We cannot derive the water abundance since the line is likely optically thick. Assuming that the levels are thermalized at 100 K, the surface filling factor of the H2O emitting cores with respect to the total galaxy size of 8 kpc is about 3 10(-3). We have also observed three lines of molecular oxygen towards the same source, but detected none. Relative to H-2, this implies an abundance ratio [O2]/[H-2] less-than-or-equal-to 3 10(-4). |
| Full Text |
| File |
Pages |
Size |
Access |
| Author's final draft |
4 |
3 MB |
Open access |
|
