Spectroscopy of giants in LMC clusters. I. Velocities, abundances, and the age-metallicity relation

Journal Article · Fri Feb 01 00:00:00 EST 1991 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115701· OSTI ID:5867959

Olszewski, E W; Schommer, R A; Suntzeff, N B; Harris, H C ^[1]

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1. Steward Observatory, Tucson, AZ (USA) Observatorio Interamericano de Cerro Tololo, La Serena (Chile) Naval Observatory, Flagstaff, AZ (USA)

Velocities and equivalent widths are presented for a large sample of LMC clusters. The calcium abundance is found to be a sensitive abundance indicator over a very wide range of (Fe/H) between 0.0 and -2.2. The age-metallicity relation is constructed for the inner and outer parts of the LMC. This relationsip can be characterized by a simple one-zone enrichment model. The abundances for the inner and outer clusters at an age of 2 Gyr are nearly identical, so that little radial abundance gradient is evident in the cluster system. 90 refs.

• OSTI ID: 5867959
• Journal Information: Astronomical Journal; (USA), Vol. 101; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
STAR CLUSTERS
CHEMICAL COMPOSITION
AGE ESTIMATION
ELEMENT ABUNDANCE
GIANT STARS
LINE WIDTHS
LUMINOSITY
MAGELLANIC CLOUDS
SPECTROSCOPY
STAR EVOLUTION
STAR MODELS
VELOCITY
ABUNDANCE
GALAXIES
MATHEMATICAL MODELS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources