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Discovery of a giant HI tail in the galaxy group HCG 44

Abstract:

We report the discovery of a giant HI tail in the intragroup medium of HCG 44 as part of the ATLAS3D survey. The tail is ~300 kpc long in projection and contains ~5 × 108 M ⊙of HI. We detect no diffuse stellar light at the location of the tail down to ~28.5 mag arcsec-2 in g band. We speculate that the tail might have formed as gas was stripped from the outer regions of NGC 3187 (a member of HCG 44) by the group tidal field. In this case, a simple model indicates that about 1/3 of the galaxy'...

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Publication status:
Published

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Publisher copy:
10.1093/mnras/sts033

Authors


Koribalski, B More by this author
Oosterloo, T More by this author
McDermid, RM More by this author
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Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
428
Issue:
1
Pages:
370-380
Publication date:
2013-01-05
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:561ea494-784c-46c2-af25-fa4d4ee97140
Source identifiers:
379422
Local pid:
pubs:379422

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