Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..205w&link_type=abstract
(Astronomical Society of the Pacific, Symposium on Stellar Populations, Santa Cruz, CA, July 1984) Astronomical Society of the P
Astronomy and Astrophysics
Astronomy
23
Galactic Bulge, Galactic Nuclei, Line Spectra, Milky Way Galaxy, Star Distribution, Stellar Evolution, Stellar Spectrophotometry, Blue Stars, Color-Magnitude Diagram, Elliptical Galaxies, Giant Stars, Infrared Astronomy, K Stars, M Stars, Metallic Stars, Metallicity, Ultraviolet Astronomy, Variable Stars
Scientific paper
The stars of the Galactic bulge (GB) are characterized in a survey of observational data, and the results are applied to the evaluation of theoretical models of elliptical galaxies and spiral bulges. The data are presented graphically and discussed in detail, with consideration of population models deduced from analysis of integrated light, the metallicity distribution among the GB K giants, RR Lyr variable, M giants, color-magnitude diagrams, age and mass, and hot blue stars. The GB population is found to have a dominant super-metal-rich (SMR) component, a mildly metal-poor non-SMR component, a maximum Fe/H abundance ratio of about 1.0, and cool M giants like those responsible for the IR signatures of other galaxies, but no very hot stars like those to which the FUV excess of other galaxies is attributed. Since the GB stars are different in mass, age, and metallicity from the giant prototypes of the Local Group, the validity of integrated-light population models of external galaxies based on Local Group giant characteristics is questioned, and the need for extensive studies of the GB population with the aim of constructing new models is indicated.
No associations
LandOfFree
The stellar population of the Galactic nuclear bulge 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 The stellar population of the Galactic nuclear bulge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The stellar population of the Galactic nuclear bulge will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-826121