Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution

Details Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....101.1835r&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 101, May 1991, p. 1835-1864. Australian National University-supported research.

Other

144

Abundance, Metallicity, Spatial Distribution, Stellar Rotation, Stellar Spectra, Subdwarf Stars, Calcium, Halos, Interstellar Gas, K Lines, Spectral Resolution

Scientific paper

Stars previously identified as having UV excesses are observed at 1-A resolution in the Ca II K-line region. Comparisons of these data with other samples and with Monte Carlo simulations involving a single component halo have yielded estimates of halo velocity dispersions and rotation velocity, corrected for the kinematic biases in the sample. It is suggested that the data are not consistent with a model in which the halo formed from star formation in a dissipating, collapsing cloud; they are, however, reconcilable with the formation of the halo stars by numerous, independently evolving gas clouds. The metallicity distribution of a sample of 372 kinematically selected halo stars is then constructed, with a view to selection effects in the data. Good agreement is noted between the globular cluster metallicity distribution and a stochastic model with a mean of 10 enrichments/fragment.

Affiliated with

Also associated with

No associations

Rating

Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution 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 Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subdwarf studies. II - Abundances and kinematics from medium resolution spectra. III - The halo metallicity distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1035850