Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21535407y&link_type=abstract
American Astronomical Society, AAS Meeting #215, #354.07; Bulletin of the American Astronomical Society, Vol. 42, p.538
Astronomy and Astrophysics
Astronomy
Scientific paper
Galaxies are oriented at various viewing angles and located at different distances from us, large samples of fiber-fed spectra from sky surveys therefore contain spatial information about the galaxies. Careful sample selection in avoiding biases should allow us to re-construct statistically galaxy spectra in 3D. In this work we investigate the inclination dependency in composite spectra of star-forming disk galaxies from the Sloan Digital Sky Survey. The inclined relative to face-on extinction in the stellar continuum is found empirically to increase with inclination. In contrast, the Balmer decrement remains constant with inclination, suggesting a different kind of dust configuration and/or reddening mechanism in the HII region from that in the stellar continuum. One factor is shown to be the presence of spatially non-uniform interstellar extinction, presumably caused by clumped dust in the vicinity of the HII region.
We acknowledge supports from the W.M. Keck Foundation and the Gordon and Betty Moore Foundation.
Budavari Tamas
Csabai István
Dobos László
Szalay Alex S.
Yip Ching-Wa
No associations
LandOfFree
Toward 3d Spectra Of Galaxies: Extinction From Inclination-dependent Composites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Toward 3d Spectra Of Galaxies: Extinction From Inclination-dependent Composites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toward 3d Spectra Of Galaxies: Extinction From Inclination-dependent Composites will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-963130