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Title:
The occultation of 119 Tauri and the effective temperatures of three M supergiants
Authors:
White, N. M.
Affiliation:
AA(Lowell Observatory, Flagstaff, Ariz.)
Publication:
Astrophysical Journal, Part 1, vol. 242, Dec. 1, 1980, p. 646-656. (ApJ Homepage)
Publication Date:
12/1980
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Astrometry, Diameters, Lunar Occultation, M Stars, Stellar Temperature, Supergiant Stars, Absorption Spectra, Infrared Photometry, Interstellar Extinction, Near Infrared Radiation, Photosphere, Radiant Flux Density, Stellar Atmospheres, Stellar Envelopes, Stellar Spectrophotometry
DOI:
10.1086/158501
Bibliographic Code:
1980ApJ...242..646W

Abstract

The angular diameter of 119 Tauri has been measured in three colors by lunar occultation, and it is used to derive the effective temperature and linear radius of this M2.2 Iab/-/ type star. These values are compared with those calculated for two stars of similar spectral type alpha Orionis and alpha Scorpii. Consistent results are obtained for the three stars and with recent model-atmosphere effective temperatures if alpha Orionis is assumed to have a variable photospheric diameter and if an empirical correction for the possible effects of circumstellar clouds is applied to the three stars. New mean spectral types and near-infrared photometry are given.

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