¹²CO(1-0) observation of isolated late-type galaxies

S. Sauty (1) , F. Casoli (1) , A. Boselli (2) , M. Gerin (1) , J. Lequeux (1) , J. Braine , G. Gavazzi , J. Dickey , I. Kazès (3) , P. Fouqué

1 LERMA - Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres
2 LAM - Laboratoire d'Astrophysique de Marseille
3 GEPI - Galaxies, Etoiles, Physique, Instrumentation

We present ¹²CO(J=1-0) line observations of 99 galaxies obtained with the SEST 15 m, the Kitt Peak 12 m and the IRAM 30 m telescopes. The target galaxies were selected from the catalogue of isolated galaxies of Karachentseva (\cite{Karachentseva73}). These data are thus representative of the CO properties of isolated late-type galaxies. All objects were observed in their central position, those with large angular sizes were mapped. These new measurements are used to estimate the molecular gas mass of the target galaxies. The molecular gas is on average ~ 18% of the atomic gas mass.

Tables 1 and 2 are also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/411/381

Based on observations made with the 12-m National Radio Astronomical Observatory, Kitt Peak, Arizona, with the Swedish-ESO Submillimetre telescope SEST, La Silla, Chile, with the IRAM 30 m radiotelescope, Pico Veleta, Granada, Spain.

Keywords: galaxies: spiral; ISM; intergalactic medium; star formation; radio lines: galaxies

Domains: Sciences of the Universe [physics]; Astrophysics [astro-ph]

S. Sauty, F. Casoli, A. Boselli, M. Gerin, J. Lequeux, et al.. ¹²CO(1-0) observation of isolated late-type galaxies. Astronomy and Astrophysics - A&A, 2003, 411, pp.381-390. ⟨10.1051/0004-6361:20031399⟩. ⟨insu-03634620⟩