Published January 1989 | Version v1
Journal article Metadata-only

Blue straggler stars in the globular cluster NGC 5053

Creators

  • 1. Palomar Observatory, Pasadena, CA (USA)
  • 2. British Columbia Univ., Vancouver (Canada)

Description

A study of the low central concentration globular cluster NGC 5053 based on photometry to 23 mag is reported. Deep C-M diagrams are presented, a mean metal abundance for the cluster is derived from the color of the RGB at the level of the horizontal branch, and theoretical isochrones are used to derive a distance modulus of (m - M0) = 16.05 + or - 0.14 mag and an age of 18 + or - 3 Gyr. A luminosity function based on subgiant and upper main-sequence stars is also constructed. A total of 24 blue stragglers in NGC 5053 are identified and their properties are studied. 65 references

Additional details

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
336
Series
Astrophys. J.
Journal Page Range
780-797
ISSN
0004-637X
CODEN
ASJOA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20047505
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
AGE ESTIMATION; BINARY STARS; CHEMICAL COMPOSITION; COLOR; DISTANCE; LUMINOSITY; ORGANIZING; PHOTOMETRY; STAR CLUSTERS; STAR EVOLUTION
Descriptors DEC
OPTICAL PROPERTIES; ORGANOLEPTIC PROPERTIES; PHYSICAL PROPERTIES; STARS