Published December 1, 1976
| Version v1
Journal article
Composition of Kapteyn's star and the M subdwarfs
Creators
- 1. Mount Stromlo and Siding Spring Observatory, Research School of Physical Sciences, Australian National University
Description
The metal abundance of the nearby M subdwarf Kapteyn's star is obtained from a 10 A mm-1 spectrum in the near-infrared. The weighted mean value of [M/H] is -0.55 +- 0.15 (p.e.), confirming an earlier estimate from the strength of the TiO bands. The O/C ratio in Kapteyn's star is within a factor of 2 of the solar value. The effect of pressure broadening in a cool subdwarf atmosphere is to strengthen the lines of the Ca II infrared triplet relative to those of a main-sequence star of equal temperature
Additional details
Publishing Information
- Journal Title
- Astrophys. J.
- Journal Volume
- 210
- Journal Issue
- 2
- Series
- Astrophys. J.
- Journal Page Range
- 402-415
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 8304762
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- CHEMICAL COMPOSITION; DWARF STARS; INFRARED SPECTRA; LINE WIDTHS; STAR MODELS; STELLAR ATMOSPHERES
- Descriptors DEC
- ATMOSPHERES; MATHEMATICAL MODELS; SPECTRA; STARS