Large Magellanic Cloud intermediate-age globular cluster NGC 1831

Journal Article · Sat Dec 01 04:00:00 EST 1984 · Publ. Astron. Soc. Pac.; (United States)

DOI:https://doi.org/10.1086/131458· OSTI ID:5604706

Hodge, P W

NGC 1831 is one of the largest most populous blue globular clusters of the LMC. A C-M diagram to V 21.5 shows a main sequence extending up to V 18.5 and a well-developed giant branch. Fitting to evolutionary models leads to an age estimate of 300 million years, and the giants colors suggest that M/H about -1.0. Spectra of three cluster stars are shown. One is for one of the anomalous giants, and it indicates that it is probably a composite image. The spectrum of the cluster shows the dominance of the hot main sequence in the integrated light. 28 references.

• Research Organization: Washington Univ., Seattle
• OSTI ID: 5604706
• Journal Information: Publ. Astron. Soc. Pac.; (United States), Journal Name: Publ. Astron. Soc. Pac.; (United States) Vol. 96; ISSN PASPA
• 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
ABUNDANCE
AGE ESTIMATION
COLOR
GALAXIES
MAGELLANIC CLOUDS
MAIN SEQUENCE STARS
MATHEMATICAL MODELS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
SPECTROPHOTOMETRY
STAR CLUSTERS
STAR EVOLUTION
STAR MODELS
STARS