Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field

Details Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005noao.prop..120s&link_type=abstract

NOAO Proposal ID #2005B-0120

Physics

Scientific paper

The formation mechanism of galaxy halos has been the source of considerable debate. There is evidence pointing toward both gravitational collapse and accretion as sources of some stars, but the relative importance of these sources are unknown. This question can be addressed with measurements of metallicities and ages of halo stars. Recent ultra-deep HST/ACS observations of a field in the M31 halo provide the necessary photometry for measuring these quantities. However, the published analysis of this important data set is of only limited value due to the treatment of metallicity effects and the age- metallicity degeneracy. We propose to obtain metallicities of red giants in this field using Washington photometry, thus providing an external constraint on the star formation history.

Affiliated with

Also associated with

No associations

Rating

Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field 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 Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breaking the age-metallicity degeneracy in the ``deepest ever'' HST M31 halo field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-796748