Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21531801k&link_type=abstract
American Astronomical Society, AAS Meeting #215, #318.01; Bulletin of the American Astronomical Society, Vol. 42, p.319
Astronomy and Astrophysics
Astronomy
Scientific paper
We present measurements of the Fe, Mg, Si, Ca, and Ti abundances for 2468 stars in 6 of the dwarf satellite galaxies of the Milky Way. The abundance distributions change with the luminosity of the galaxy. As the galaxy luminosity increases, the [Fe/H] distribution becomes less symmetric and more weighted toward high metallicity, indicating more prolonged star formation, possibly including the infall of pristine gas. In each of the 6 galaxies, [α/Fe] falls with increasing [Fe/H], but the fall-off occurs at higher [Fe/H] for the more luminous galaxies, indicating more vigorous star formation. The trend in the chemical evolution histories of Milky Way satellite galaxies appears to be a monotonic function of final stellar mass. We gratefully acknowledge support from the Space Telescope Science Institute and the National Science Foundation.
Bolte Michael
Frebel Anna
Geha Marla C.
Guhathakurta Puraga
Kirby Evan
No associations
LandOfFree
Chemical Evolution of Milky Way Satellite Galaxies as a Function of Galaxy Luminosity 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 Chemical Evolution of Milky Way Satellite Galaxies as a Function of Galaxy Luminosity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical Evolution of Milky Way Satellite Galaxies as a Function of Galaxy Luminosity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-961803