Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31)

Details Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31) Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31)

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.8106i&link_type=abstract

American Astronomical Society Meeting 210, #81.06; Bulletin of the American Astronomical Society, Vol. 39, p.190

Astronomy and Astrophysics

Astronomy

Scientific paper

We characterize the metallicity [Fe/H] distribution of red giant branch (RGB) stars in the extended bulge of Andromeda spiral galaxy (M31) using spectroscopic and photometric data acquired with the Keck II 10-m telescope/DEIMOS spectrograph, CFHT 3.6-m telescope/ MegaCam camera, and the KPNO 4-m telescope/Mosaic camera. Our study is based on several hundred spectroscopically confirmed M31 RGB stars located in fields that lie in the projected distance range R = 10 - 30 kpc from M31's center along the minor axis. We measure the [Fe/H] distribution of M31's extended Sersic (n = 2) bulge by statistically subtracting the contribution of the underlying R-2.6 power-law metal-poor stellar halo that extends out to R = 165 kpc. This study extends the initial finding by Kalirai et al. (2006) of a radial metallicity gradient in M31’s bulge + halo. The derived [Fe/H] distribution of M31's extended bulge is compared to chemical evolution models.
This study is funded by grants from QEM, CfAO, NSF, and NASA/STScI.

Affiliated with

Also associated with

No associations

Rating

Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31) 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 Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterizing the Metallicity Distribution of the Inner Spheroid of Andromeda Spiral Galaxy (M31) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1032221