ELEMENTAL ABUNDANCE RATIOS IN STARS OF THE OUTER GALACTIC DISK. IV. A NEW SAMPLE OF OPEN CLUSTERS

ELEMENTAL ABUNDANCE RATIOS IN STARS OF THE OUTER GALACTIC DISK. IV. A NEW SAMPLE OF OPEN CLUSTERS

We present radial velocities and chemical abundances for nine stars in the old, distant open clusters Be 18, Be21, Be22, Be32, and PWM4. For Be 18 and PWM4, these are the first chemical abundance measurements. Combining our data with literature results produces a compilation of some 68 chemical abun...

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Veröffentlicht in:The Astronomical journal 2012-10, Vol.144 (4), p.1-32
Hauptverfasser: Yong, David, Carney, Bruce W, Friel, Eileen D
Format: Artikel
Sprache:eng
Schlagworte:
Abundance
ASTRONOMY
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Clusters
COMPARATIVE EVALUATIONS
Disks
DISTANCE
ELEMENT ABUNDANCE
EUROPIUM
Evolution
GALAXIES
IRON
Metallicity
Open clusters
RADIAL VELOCITY
STAR CLUSTERS
STARS
Trends
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Zusammenfassung:We present radial velocities and chemical abundances for nine stars in the old, distant open clusters Be 18, Be21, Be22, Be32, and PWM4. For Be 18 and PWM4, these are the first chemical abundance measurements. Combining our data with literature results produces a compilation of some 68 chemical abundance measurements in 49 unique clusters. All elements show negligible or small trends between [X/Fe] and distance (
ISSN:0004-6256
1538-3881
1538-3881
DOI:10.1088/0004-6256/144/4/95