Abstract
We present IRAM 30m telescope observations of the CO(1-0) and (2-1) lines in a sample of 11 group-dominant elliptical galaxies selected from the CLoGS nearby groups sample. Our observations confirm the presence of molecular gas in 4 of the 11 galaxies at >4 sigma significance, and combining these with data from the literature we find a detection rate of 43+-14%, comparable to the detection rate for nearby radio galaxies, suggesting that group-dominant ellipticals may be more likely to contain molecular gas than their non-central counterparts. Those group-dominant galaxies which are detected typically contain ~2x10^8 Msol of molecular gas, and although most have low star formation rates (
Original language | English |
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Article number | A111 |
Number of pages | 9 |
Journal | Astronomy & Astrophysics |
Volume | 573 |
Early online date | 7 Jan 2015 |
DOIs | |
Publication status | Published - Jan 2015 |
Keywords
- astro-ph.GA