Other
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21832501j&link_type=abstract
American Astronomical Society, AAS Meeting #218, #325.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
We use stellar spectra from the Sloan Digital Sky Survey (SDSS) to create a high- latitude extinction map of the local Galaxy. Our technique compares spectra from SDSS stars in low-extinction lines of sight, as determined by Schlegel, Finkbeiner, & Davis, to other SDSS spectra in order to derive improved distance estimates and accurate line-of-sight extinctions. Unlike most previous studies, which have used a two-color method to determine extinction, we fit extinction curves to fluxes across a large spectral range. We apply this method to SDSS K dwarfs, nearby L dwarfs, and stars in the DR7 M dwarf sample. Our result is an extinction map that extends from tens of pc to several kpc away from the sun. We also use a similar technique to create a map of RV values within approximately 1 kpc of the sun, and find they are consistent with the widely accepted diffuse interstellar medium value of 3.1. Using our extinction data, we derive a dust scale height for the local galaxy of 119 ± 15 parsecs and find evidence for a local dust cavity.
Foster Jonathan B.
Jones David
West Andrew A.
No associations
LandOfFree
Using Stellar Spectra to Constrain the Distribution of Galactic Dust 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 Using Stellar Spectra to Constrain the Distribution of Galactic Dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Using Stellar Spectra to Constrain the Distribution of Galactic Dust will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1742680