The Large Magellanic Cloud Bar West field

Journal Article · Sat Dec 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169467· OSTI ID:5994640

Frogel, J A; Blanco, V M ^[1]

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1. Ohio State Univ., Columbus (USA) Observatorio Interamericano de Cerro Tololo, La Serena (Chile)

Infrared photometry is presented for an unbiased sample of M giants in the Bar West field of the LMC. The m(bol), J-K color-magnitude diagram is dominated by AGB stars with properties similar to those of giants in intermediate-age clusters in the LMC. About 20 percent of the AGB population has properties similar to those of young clusters. The brightest stars are all of M type; a mean (Fe/H) = -0.5 + or - 0.3, nearly a factor of 10 lower than the mean (Fe/H) in Baade's window, is estimated for them. The presence of two sequences of AGB stars can be interpreted as evidence for at least two major episodes of star formation in the Bar West field. The young population appears to have a measurably higher metallicity than the older population. 39 refs.

• OSTI ID: 5994640
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 365; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CHEMICAL COMPOSITION
GALAXIES
GIANT STARS
INFRARED SPECTRA
MAGELLANIC CLOUDS
MORPHOLOGY
PHOTOMETRY
SPECTRA
STAR CLUSTERS
STAR EVOLUTION
STARS