Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..455c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 455-473.
Astronomy and Astrophysics
Astronomy
112
Accretion Disks, Infrared Spectra, Infrared Spectrophotometers, Pre-Main Sequence Stars, Stellar Luminosity, T Tauri Stars, Far Infrared Radiation, Infrared Astronomy Satellite, Infrared Sources (Astronomy)
Scientific paper
An analysis is presented of 72 T Tau stars identified by IRAS in the Tau-Aur complex. The composite energy distributions of the stars are constructed to define bolometric luminosities and the luminosity components in different spectral regimes are separated. The near- to far-IR spectral indices of these stars are analyzed. It is shown that 2/3 of typical T Tau stars have a bolometric to stellar luminosity ratio of about 1.0, which implies no appreciable disks. The distribution is bimodal, however, with a second peak at about 2.0, suggesting that 1/3 of the stars have disks. The bolometric luminosities of the north and south components of T Tau are found to be in the range of 9-21 solar luminosities and 1.5-14 solar luminosities for T Tau N and T Tau S, respectively.
Beichman Charles Arnold
Cohen Martin
Emerson James P.
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