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Title:
Infrared photometry and spectroscopy of the brown dwarf candidate PC0025+0447
Authors:
Graham, James R.; Matthews, K.; Greenstein, J. L.; Neugebauer, G.; Tinney, C. G.; Persson, S. E.
Affiliation:
AA(California Univ., Berkeley; Palomar Observatory, Pasadena), AB(Palomar Observatory, Pasadena, CA), AC(Palomar Observatory, Pasadena, CA), AD(Palomar Observatory, Pasadena, CA), AE(Palomar Observatory, Pasadena, CA), AF(Carnegie Institution of Washington, Observatories, Pasadena, CA)
Publication:
Astronomical Journal (ISSN 0004-6256), vol. 104, no. 5, p. 2016-2021. (AJ Homepage)
Publication Date:
11/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
BROWN DWARF STARS, INFRARED PHOTOMETRY, INFRARED SPECTROSCOPY, M STARS, EMISSION SPECTRA, LINE SPECTRA
DOI:
10.1086/116377
Bibliographic Code:
1992AJ....104.2016G

Abstract

Infrared photometry and spectroscopy of PC0025 are used to show that this star is a cool K dwarf with T(eff) of about 2000 K. The H2O absorption bands at 1.4 and 1.9 micron are exceptionally prominent and stronger than previously measured in any dwarf. It is concluded that the H2O band strength increases dramatically as T(eff) decreases from 3000 to 2000 K.

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