A Tiny Galactic Dust Cloud Projected onto NGC 3269? | Zendy

B. Dirsch | Zendy; T. Richtler | Zendy; M. Gómez | Zendy

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A Tiny Galactic Dust Cloud Projected onto NGC 3269?

Author(s) -

B. Dirsch,

T. Richtler,

M. Gómez

Publication year - 2005

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/432509

Subject(s) - galaxy , astrophysics , physics , molecular cloud , milky way , astronomy , cluster (spacecraft) , cloud computing , telescope , stars , computer science , programming language , operating system

We report on new observations obtained with the Magellan Clay-telescope of atiny dust patch in the Sa-galaxy NGC 3269 in the Antlia galaxy cluster. It hasalready been suspected to be a projected Galactic foreground cloud. In thiscase a size of about 4 arcsec and a maximum absorption of ~1 mag in the B-bandwould make it unique so far. We present further evidence for its Galacticnature from imaging under excellent seeing conditions (0.3-0.6 arcsec). Thisdust cloud could be the first optically identified counterpart of a new type ofmolecular cloud recently discovered by Heithausen (2004).Comment: Accepted for publication in AJ. 10 pages, 3 figure

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