Exploring the Local Milky Way: M Dwarfs as Tracers of Galactic Populations

Details Exploring the Local Milky Way: M Dwarfs as Tracers of Galactic Populations Exploring the Local Milky Way: M Dwarfs as Tracers of Galactic Populations

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20917214b&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #172.14; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

We utilize Sloan Digital Sky Survey observations of over 8,000 low-mass dwarfs to examine Galactic structure and kinematics in the Southern (b -60 deg) Milky Way. Combining medium-resolution (R 1,800) spectroscopy, five band (ugriz) photometry and proper motion measurements, this dataset represents a powerful tool for examining the local structure and kinematics of the thin and thick disks. For each star, we have measured the activity (using the H-alpha luminosity) and UVW velocities. These measurements, as functions of distance from the Galactic Plane, offer a glimpse into the mean structural and kinematic properties of the thin and thick disk populations.
The authors gratefully acknowledge the support of NSF grants AST02-05875 and AST06-07644 and NASA ADP grant NAG5-13111

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