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The ATLAS3D project - X. On the origin of the molecular and ionized gas in early-type galaxies

Abstract:

We make use of interferometric CO and Hi observations, and optical integral-field spectroscopy from the ATLAS3D survey, to probe the origin of the molecular and ionized interstellar medium (ISM) in local early-type galaxies. We find that 36 ± 5 per cent of our sample of fast-rotating early-type galaxies have their ionized gas kinematically misaligned with respect to the stars, setting a strong lower limit on the importance of externally acquired gas (e.g. from mergers and cold accretion). Slo...

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Publication status:
Published

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Authors


Alatalo, K More by this author
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Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
417
Issue:
2
Pages:
882-899
Publication date:
2011-10-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:99a2f43a-54b0-4e8b-ad00-39e0233b31be
Source identifiers:
190216
Local pid:
pubs:190216

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