- Katherine Alatalo
- Timothy A. Davis
- Martin Bureau
- Lisa M. Young
- Leo Blitz
- Alison F. Crocker
- Estelle Bayet
- Maxime Bois
- Frédéric Bournaud
- Michele Cappellari
- Roger L. Davies
- P. T. de Zeeuw
- Pierre-Alain Duc
- Eric Emsellem
- Davor Krajnović
- Harald Kuntschner
- Pierre-Yves Lablanche
- Raffaella Morganti
- Richard M. McDermid
- Thorsten Naab
- Tom Oosterloo
- Marc Sarzi
- Nicholas Scott
- Paolo Serra
- Anne-Marie Weijmans
Original language | English |
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Pages (from-to) | 1796-1844 |
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Journal | Monthly Notices of the Royal Astronomical Society |
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Volume | 432 |
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Issue number | 3 |
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DOIs | |
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Publication status | Published - 1 May 2013 |
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We present the Combined Array for Research in Millimeter Astronomy
(CARMA) ATLAS3D molecular gas imaging survey, a systematic
study of the distribution and kinematics of molecular gas in CO-rich
early-type galaxies. Our full sample of 40 galaxies (30 newly mapped and
10 taken from the literature) is complete to a 12CO(1-0)
integrated flux of 18.5 Jy km s-1 and it represents the
largest, best studied sample of its type to date. A comparison of the CO
distribution of each galaxy to the g - r colour image (representing
dust) shows that the molecular gas and dust distributions are in good
agreement and trace the same underlying interstellar medium. The
galaxies exhibit a variety of CO morphologies, including discs (50 per
cent), rings (15 per cent), bars+rings (10 per cent), spiral arms (5 per
cent) and mildly (12.5 per cent) and strongly (7.5 per cent) disrupted
morphologies. There appear to be weak trends between galaxy mass and CO
morphology, whereby the most massive galaxies in the sample tend to have
molecular gas in a disc morphology. We derive a lower limit to the total
accreted molecular gas mass across the sample of 2.48 ×
1010 M⊙, or approximately 8.3 ×
108 M⊙ per minor merger within the sample,
consistent with minor merger stellar mass ratios.
- surveys, ISM: molecules, galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: ISM, galaxies: star formation
ID: 11174475