Published September 15, 1974 | Version v1
Journal article Metadata-only

The unusual horizontal branch of NGC 2808

Creators

  • 1. David Dunlap Observatory, Richmond Hill, Ontario, Canada

Description

A new color-magnitude diagram for the southern globular cluster NGC 2808 shows a peculiar "split" horizontal branch: both red and extremely blue HB stars are present, but a large unpopulated gap exists between them in the color range - 0.1 < (B - V)0 <0.4. The cluster's giant-branch morphology and red HB are normal for a moderately high-metallicity object, but the presence of the extremely blue [(B - V)0 < -0.1] HB stars is anomalous. This feature is interpreted as due to a possible discontinuous mass distribution along the horizontal branch. Subject headings: globular clusters - horizontal-branch stars

Additional details

Identifiers

DOI
10.1086/181616;

Publishing Information

Journal Title
The Astrophysical Journal
Journal Volume
192
Journal Issue
3
Series
Astrophys. J., Lett.
Journal Page Range
L161
ISSN
0004-637X

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
6186317
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
COLOR; HELIUM; MASS; PHOTOMETRY; STAR CLUSTERS; STAR EVOLUTION
Descriptors DEC
ELEMENTS; NONMETALS; OPTICAL PROPERTIES; ORGANOLEPTIC PROPERTIES; PHYSICAL PROPERTIES; RARE GASES

Optional Information

Notes
Updated automatically by Metadata and Full-Text Enrichment Agent