A&A Supplement Series, Vol. 126, November II 1997, 3-13

Received January 6; accepted February 3, 1997

CO and H in a southern sample of interacting galaxies

I. The data

C. Horellou and R. Booth

Send offprint request: C. Horellou
Onsala Space Observatory, Chalmers University of Technology, S-439 92 Onsala, Sweden
e-mail: horellou@oso.chalmers.se, roy@oso.chalmers.se

Abstract:

Using SEST, the Parkes antenna and the Australia Telescope Compact Array, we have made a survey of the ¹²CO(1-0) and emission of an optically-selected sample of 60 southern interacting and merging galaxies. In this paper we present the data and determine global masses of neutral gas (in molecular and atomic form) for the observed galaxies. We have detected in 26 systems and found that these galaxies have less than 15% of their gas in molecular form.

keywords: galaxies: interaction -- galaxies: ISM -- galaxies -- evolution -- radio lines: galaxies

• 1. Introduction
• 2. The sample
• 3. The existing datasets
• 4. Observations of the neutral gas and data
  reduction
• 5. Observational biases due to limited telescope sensitivity
• 6. Global results of the and CO observations
• References