Three micron spectroscopy of low-mass pre-main-sequence stars

Details Three micron spectroscopy of low-mass pre-main-sequence stars Three micron spectroscopy of low-mass pre-main-sequence stars

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...359..192s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 359, Aug. 10, 1990, p. 192-196. Research supported by the University of Tsu

Astronomy and Astrophysics

Astrophysics

44

Infrared Spectra, Pre-Main Sequence Stars, Protostars, T Tauri Stars, Taurus Constellation, Ammonia, Carbon Monoxide, Water

Scientific paper

Low-resolution spectra were obtained of 16 premain-sequence stars, and ice-band features are detected in young T Tauri stars (TTSs) and in low-mass protostars. The TTSs have an ice band optical depth tau(ice) of 0.1-0.4. The tau(ice) for objects in the Taurus dark cloud decreases progressively from protostars to TTSs. The apparent color temperatures of the continuum spectra are 800-1200 K for protostars and 1100-1500 K for TTSs. The color temperatures of the continuum increase to 1200-2000K after correcting the protostar spectra for foreground extinction. This common temperature range in both young TTSs and protostars suggests that the inner boundary of the circumstellar disk is determined by the sublimation of refractory grains.

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