Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....106.2294r&link_type=abstract
The Astronomical Journal (ISSN 0004-6256), vol. 106, no. 6, p. 2294-2300
Astronomy and Astrophysics
Astronomy
12
Early Stars, Galactic Halos, Metallicity, Stellar Composition, Stellar Gravitation, Angular Momentum, Hydrogen, Iron, Kinematics, Spatial Distribution, Stellar Luminosity, Stellar Orbits
Scientific paper
From a sample of early-type stars with 10 less than V less than 15.5, in two Galactic halo fields at (l;b) = (90 deg, 270 deg;-45 deg), we examine the kinematics and spatial distribution of those with (Fe/H) less than -1.0. These stars are identified as candidate field horizontal branch stars. We find that a significant proportion of these stars brighter than V = 14, i.e., at distances of less than 2.5 kpc above the Galactic plane show evidence of high angular momentum orbits and are consistent in their spatial distribution with membership of a metal-weak component of the thick disk with (Fe/H) extending low as -1.6. Among the metal-poor stars there is a group of objects with surface gravities higher than those appropriate to the horizontal branch which we identify as field halo blue stragglers.
Roberts William H.
Rodgers Alexander W.
No associations
LandOfFree
Early-type stars in orthogonal halo fields. 3: The metal-weak stars 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 Early-type stars in orthogonal halo fields. 3: The metal-weak stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Early-type stars in orthogonal halo fields. 3: The metal-weak stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-783430