Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1321l&link_type=abstract
American Astronomical Society, AAS Meeting #211, #13.21; Bulletin of the American Astronomical Society, Vol. 39, p.758
Astronomy and Astrophysics
Astronomy
Scientific paper
Feathers are striking extinction features that emerge from a spiral arm dust lane and arch into the interarm. Based on a study of HST archival images, La Vigne et al. 2006 find that feathers are common in a range of spiral galaxy types, and that observations of M51 suggest feathers emerge from giant molecular associations (GMAs) and can be associated with much of the star formation in a spiral galaxy. To evaluate whether the conclusions based on M51 can be more generally applied, we have observed CO(1-0) emission in four spiral galaxies at 2-3” resolution using the newly operational CARMA millimeter wave array. Maps of NGC 0628, NGC 3627, NGC 4637, and NGC 5055 are presented and implications for theories for the origin of feathers are discussed.
CARMA operations are supported by the NSF under a cooperative agreement, and by the partner universities.
La Vigne Misty A.
Vogel Stuart N.
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