Title: The infrared CA II triplet - A luminosity indicator for stellar population synthesis
Abstract:view Abstract Citations (112) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The infrared CA II triplet - A luminosity indicator for stellar populatio...view Abstract Citations (112) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The infrared CA II triplet - A luminosity indicator for stellar population synthesis. Jones, J. E. ; Alloin, D. M. ; Jones, B. J. T. Abstract The authors study the properties of the Ca II infrared triplet (Ca T) from a sample of Reticon spectra of 62 stars. The stars range over spectral types B though mid-M, and the sample spans some four orders of magnitude in gravity g, and almost a factor of 10 in metallicity. It is found that, over all spectral types, from F to mid-M, and over this large gravity interval, the equivalent width of Ca T correlates strongly with log g. This is an almost one-valued relation, being relatively insensitive to metallicity. Thus, since most of the light from galaxies is thought to come from G and K stars, the Ca T feature should be a useful tool for constraining the dwarf: giant ratio of the light-dominant stellar population. Existing measurements of Ca T are applied in an analysis of the stellar content in the nucleus of M31. Publication: The Astrophysical Journal Pub Date: August 1984 DOI: 10.1086/162325 Bibcode: 1984ApJ...283..457J Keywords: Infrared Stars; Metallicity; Stellar Luminosity; Stellar Spectra; Atomic Energy Levels; Calcium; Stellar Temperature; Titanium Oxides; Astrophysics full text sources ADS | data products SIMBAD (61)Read More
Publication Year: 1984
Publication Date: 1984-08-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 62
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