A search for 6.7 GHz methanol masers in M33

Goldsmith, P.F.; Pandian, J.D.; Deshpande, A.A.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3625

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DC Field	Value	Language
dc.contributor.author	Goldsmith, P.F.	-
dc.contributor.author	Pandian, J.D.	-
dc.contributor.author	Deshpande, A.A.	-
dc.date.accessioned	2008-08-04T10:28:16Z	-
dc.date.available	2008-08-04T10:28:16Z	-
dc.date.issued	2008-06	-
dc.identifier.citation	Astrophysical Journal, 2008, Vol.680, p1132	en
dc.identifier.issn	P-ISSN : 0004-637X.	-
dc.identifier.issn	E-ISSN : 1538-4357	-
dc.identifier.uri	http://hdl.handle.net/2289/3625	-
dc.description	Restricted Access. An open-access version is available at arXiv.org. Articles older than 2 years are open to all at the journal site (alternative location)	en
dc.description.abstract	We report the negative results from a search for 6.7 GHz methanol masers in the nearby spiral galaxy M33. We observed 14 GMCs in the central 4 kpc of the Galaxy, and found 3 σ upper limits to the flux density of ~4 mJy at a velocity resolution of 0.35 km s-1. By velocity shifting and combining the spectra from the positions observed, we obtain an effective 3 σ upper limit on the average emission of ~1 mJy in a 0.25 km s-1 channel. These limits lie significantly below what we would expect based on our estimates of the methanol maser luminosity function in the Milky Way. One possible explanation for the absence of detectable methanol masers appears to be the metallicity of M33, which is somewhat less than that of the Milky Way.	en
dc.format.extent	1687628 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	University of Chicago Press for the American Astronomical Society	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2008ApJ...680.1132G	en
dc.relation.uri	http://arxiv.org/abs/0710.1677	en
dc.relation.uri	http://dx.doi.org/ 10.1086/524651	en
dc.rights	2008 IOP Publishing for the American Astronomical Society	en
dc.subject	Galaxies	en
dc.subject	Messier Number: M33	en
dc.subject	Molecules, Masers	en
dc.title	A search for 6.7 GHz methanol masers in M33	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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