Submillimeter CO observations of warm gas around T Tauri stars

Details Submillimeter CO observations of warm gas around T Tauri stars Submillimeter CO observations of warm gas around T Tauri stars

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...412l..67s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 412, no. 2, p. L67-L70.

Astronomy and Astrophysics

Astrophysics

18

Carbon Monoxide, High Temperature Gases, Interstellar Gas, Submillimeter Waves, T Tauri Stars, Emission Spectra, Interstellar Matter, Shock Heating, Spatial Distribution, Spectral Line Width, Stellar Winds

Scientific paper

We report the first observations of T Tauri stars (T-, HL-, DG-, RY-, and GG-Tau) in the (C-12)O (6-5) line. The observations trace the dynamics of warm and dense gas on a scale below 10 arcsec. The CO submillimeter emission probably originates in shocks where a stellar wind interacts with a high column density of molecular material close to the star. Additional (C-12)O (3-2) and C(O-18) (2-1) data show that the spatial distributions and line widths in T-Tau and HL-Tau are not consistent with Keplerian rotation or residual infall but can be explained by warm dense slowly outflowing material. We also conclude that the dust associated with the warm molecular outflow could account for a substantial fraction of T-Tau's farinfrared continuum emission.

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