Portal de Periódicos da CAPES

A reexamination of luminosity sources in T Tauri stars. I - Taurus-Auriga

1989; IOP Publishing; Volume: 339; Linguagem: Inglês

10.1086/167310

1538-4357

Martin Cohen, J. P. Emerson, C. A. Beichman,

Astrophysics and Star Formation Studies

view Abstract Citations (116) References (47) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Reexamination of Luminosity Sources in T Tauri Stars. I. Taurus-Auriga Cohen, Martin ; Emerson, J. P. ; Beichman, C. A. Abstract 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. Publication: The Astrophysical Journal Pub Date: April 1989 DOI: 10.1086/167310 Bibcode: 1989ApJ...339..455C Keywords: Accretion Disks; Infrared Spectra; Infrared Spectrophotometers; Pre-Main Sequence Stars; Stellar Luminosity; T Tauri Stars; Far Infrared Radiation; Infrared Astronomy Satellite; Infrared Sources (Astronomy); Astrophysics; INFRARED: SOURCES; SPECTROPHOTOMETRY; STARS: ACCRETION; STARS: PRE--MAIN-SEQUENCE full text sources ADS | data products SIMBAD (70)