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Title:
Infrared colors of low-mass stars
Authors:
Leggett, S. K.
Affiliation:
AA(Universities Space Research Association, Columbia, MD; U.S. Naval Observatory, Flagstaff, AZ)
Publication:
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 82, no. 1, Sept. 1992, p. 351-394. (ApJS Homepage)
Publication Date:
09/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Infrared Photometry, Red Dwarf Stars, Stellar Mass, Stellar Spectrophotometry, Color-Color Diagram, Metallicity, Stellar Color, Stellar Spectra, Stellar Temperature, Ubv Spectra
DOI:
10.1086/191720
Bibliographic Code:
1992ApJS...82..351L

Abstract

A total of 322 red dwarf stars are studied in a review of IR IJHK photometry to discern chromospheric activity and kinematic data regarding metallicity effects in the IR color:color diagrams. The metallicity variations are employed to assess changes in the H(-) continuum opacity and water-vapor characterizations. The stars are classified in terms of metal-richness with five categories including young disk, old disk, and halo types with attention given to the inverse relationship between metallicity and water-band absorption strength. The results include IR photometric parallax relations for each metallicity group and absolute magnitudes for single stars as well as temperatures, intrinsic colors, and spectral types. The body of data is useful for constraining models of the interiors and atmospheres of this class of stars.

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