How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks

Details How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331706k&link_type=abstract

American Astronomical Society, AAS Meeting #213, #317.06; Bulletin of the American Astronomical Society, Vol. 41, p.296

Astronomy and Astrophysics

Astronomy

Scientific paper

We present new metallicity measurements for 298 individual red giant branch stars in eight of the least luminous dwarf spheroidal galaxies (dSphs) in the Milky Way (MW) system as well as hundreds more stars in the larger dSphs Sculptor and Leo I. Our technique is based on medium resolution Keck/DEIMOS spectroscopy coupled with spectral synthesis. We present the first spectroscopic metallicities at [Fe/H] < -3.0 of stars in a dwarf galaxy, with individual stellar metallicities as low as [Fe/H] = -3.3. I also demonstrate that the luminosity-metallicity relation previously seen in more luminous dSph galaxies (MV = -13.4 to -8.8) extends smoothly down to an absolute magnitude of MV = -3.7. These new metallicities will help us understand if and how the Milky Way stellar halo formed by the accretion of dSphs.

Affiliated with

Also associated with

No associations

Rating

How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks 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 How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and How to Build the Milky Way Stellar Halo: An Inspection of the dSph Building Blocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1697713