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  1. Astrophysics and Space Science
  2. Astrophysics and Space Science : Volume 267
  3. Astrophysics and Space Science : Volume 267, Issue 1-4, September 1999
  4. Early-Type Stars
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Astrophysics and Space Science : Volume 267
Astrophysics and Space Science : Volume 267, Issue 1-4, September 1999
Session 1: History of the Concept of Stellar Populations
Report on the Progress in Stellar Evolution to 1950
Figures
Preface
Preface to the Original Publication
Walter Baade's Discovery of the Two Stellar Populations
The Discovery of the Chemical Composition - Kinematics Connection in the 1950's
Stellar Evolution and the Population Concept after 1950; The Vatican Conference
Session 2: Globular Cluster Systems
The Galactic Globular Cluster System
The Stellar Population of a Typical Globular Cluster
Stars in the Galactic Halo
Globular Cluster Systems in Other Galaxies
Session 3: Open Clusters and the Galactic Disk
Evolution of the Galactic Halo and Disk
Age and Metallicity Distributions among Galactic Disk Stars
Early-Type Stars
High Velocity Clouds in the Galaxy
Chemical Evolution of the Galactic Disk and Bulge
Session 4: Stellar Populations in Local Group Galaxies
Stellar Populations in the Magellanic Clouds
M31 and Companions: A Key to Baade's Stellar Populations Then and Now
The Stellar Populations in Local Group Dwarf Galaxies
Star Clusters in Local Group Galaxies
Session 5: Dark Matter in Galaxies
Dark Matter in the Milky Way
Dark Matter in Spiral Galaxies
Central Black Holes and Dark Halos in Elliptical Galaxies
Dark Matter in Clusters of Galaxies
Session 6: Stellar Populations in Elliptical Galaxies
The UV Upturn in Elliptical Galaxies
The Stellar Ages of Elliptical Galaxies
Stellar Populations in S0 Galaxies
Measuring the Evolution of the M/L Ratio from the Fundamental Plane
Effects of Late Mergers on Stellar Populations in E and S0 Galaxies
Environmental Effects in the Stellar Populations of Elliptical Galaxies
Session 7: Galaxies at Large Redshift
The Morphological Evolution of Field Galaxies
Stellar Populations at Large Redshifts
Galaxy Evolution from Deep Field Galaxy Counts
Session 8: Classification Schemes of Stellar Populations
Formation Models of Galaxies
Stellar Dating and Formation of Galactic Spheroids
Panel Discussion on the Classification and Terminology of Stellar Populations
Conference Summary
Index
Astrophysics and Space Science : Volume 266
Astrophysics and Space Science : Volume 265
Astrophysics and Space Science : Volume 264
Astrophysics and Space Science : Volume 263
Astrophysics and Space Science : Volume 262
Astrophysics and Space Science : Volume 261
Astrophysics and Space Science : Volume 260
Astrophysics and Space Science : Volume 259
Astrophysics and Space Science : Volume 258
Astrophysics and Space Science : Volume 257
Astrophysics and Space Science : Volume 256
Astrophysics and Space Science : Volume 255
Astrophysics and Space Science : Volume 254
Astrophysics and Space Science : Volume 253
Astrophysics and Space Science : Volume 252
Astrophysics and Space Science : Volume 251
Astrophysics and Space Science : Volume 250
Astrophysics and Space Science : Volume 249
Astrophysics and Space Science : Volume 248
Astrophysics and Space Science : Volume 247

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Early-Type Stars

Content Provider Springer Nature Link
Author Freeman, K.C.
Copyright Year 1999
Abstract Away from the young disk, several classes of early type stars are found. They include (i) the old, metal-poor blue horizontal branch stars of the halo and the metal-poor tail of the thick disk; (ii) metal-rich young A stars in a rapidly rotating subsystem but with a much higher velocity dispersion than the A stars of the young disk, and (iii) a newly discovered class of metal-poor young main sequence A stars in a subsystem of intermediate galactic rotation (Vrot ā‰ˆ 120 km sāˆ’1). The existence and kinematics of these various classes of early type stars provide insight into the formation of the metal-poor stellar halo of the Galaxy and into the continuing accretion events suffered by our Galaxy.
Starting Page 129
Ending Page 138
Page Count 10
File Format PDF
ISSN 0004640X
Journal Astrophysics and Space Science
Volume Number 267
Issue Number 1-4
e-ISSN 1572946X
Language English
Publisher Kluwer Academic Publishers
Publisher Date 1999-01-01
Publisher Place Dordrecht
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Astronomy
Content Type Text
Resource Type Article
Subject Astronomy and Astrophysics Space and Planetary Science
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