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SDSS IV MaNGA: Discovery of an H Alpha blob associated with a dry galaxy pair - Ejected gas or a “dark” galaxy candidate?

Abstract:

We report the discovery of a mysterious giant Hα blob that is ∼8 kpc away from the main MaNGA target 1-24145, one component of a dry galaxy merger, and has been identified in the first-year SDSS-IV MaNGA data. The size of the Hα blob is ∼3-4 kpc in radius, and the Hα distribution is centrally concentrated. However, there is no optical continuum counterpart in the deep broadband images reaching ∼26.9 mag arcsec -2 in surface brightness. We estimate that the masses of the ionized and cold gases...

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Publication status:
Published
Peer review status:
Peer reviewed

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Role:
Author
ORCID:
0000-0001-7218-7407
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Role:
Author
ORCID:
0000-0001-9608-6395
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Role:
Author
ORCID:
0000-0003-1385-7591
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Name:
National Research Council of Canada
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Name:
French National Centre for Space Studies
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Name:
Society for the Promotion of Science
Publisher:
Institute of Physics
Journal:
Astrophysical Journal More from this journal
Volume:
837
Issue:
1
Pages:
32
Publication date:
2017-02-01
Acceptance date:
2017-01-14
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
Keywords:
Pubs id:
pubs:679668
UUID:
uuid:aa77ca89-ad14-4196-b6de-da3603c7e3a2
Local pid:
pubs:679668
Deposit date:
2018-01-19

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