A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis

Details A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis

2007-04-25

arxiv.org/abs/0704.3328v1

Astronomy and Astrophysics

Astrophysics

Submitted to ApJL

Scientific paper

We have used Suprime-Cam on the Subaru Telescope to conduct a V- and I-band imaging survey of fields sampling the spheroid of the Andromeda galaxy along its south-east minor axis. Our photometric data are deep enough to resolve stars down to the red clump. Based on a large and reliable sample of red giant stars available from this deep wide-field imager, we have derived metallicity distributions vs. radius and a surface brightness profile over projected distances of R=23-66 kpc from the galaxy's center. The metallicity distributions across this region shows a clear high mean metallicity and a broad distribution ([Fe/H] ~ -0.6 +/- 0.5), and indicates no metallicity gradient within our observed range. The surface brightness profile at R>40 kpc is found to be flatter than previously thought. It is conceivable that this part of the halo samples as yet unidentified, metal-rich substructure.

Affiliated with

Also associated with

No associations

Rating

A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis 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 A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-707228