Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21724612r&link_type=abstract
American Astronomical Society, AAS Meeting #217, #246.12; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We present an HST NICMOS mosaic of M51 taken with the F160W (H-band) filter. We combine this near-infrared image with a optical ACS image to create a high resolution image of the dust extinction in M51. The high signal to noise and resolution of this color map allows us to investigate the morphology of the interstellar medium in M51 with a spatial dynamic range that reveals structures ranging in size from 10 pc to a kiloparsec.
The color map shows that the majority of the dust in M51 is distributed in linear structures, either in the spiral arm dust lanes or in one of the many spurs that connect to the spiral arm dust lanes. What is striking is the difference in this morphology and the millimeter interferometer maps of M51 which show the molecular gas concentrated into giant molecular clouds.
Chandar Rupali
Regan Michael W.
Whitmore Bradley C.
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