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VLA observations of mass loss from T Tauri stars
Cohen, M.; Bieging, J. H.; Schwartz, P. R.
AA(NASA, Ames Research Center, Moffett Field, CA), AB(California, University, Berkeley, CA), AC(U.S. Navy, E. O. Hulburt Center for Space Research, Washington, DC)
Astrophysical Journal, Part 1, vol. 253, Feb. 15, 1982, p. 707-715. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Radio Astronomy, Radio Emission, Stellar Mass Ejection, T Tauri Stars, Anisotropy, Astronomical Maps, Cores, Molecular Clouds, Radio Sources (Astronomy), Radio Spectra, Stellar Evolution, Stellar Rotation, Stellar Winds
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Six of 24 pre-main sequence stars surveyed with the VLA have been found to emit at 4.885 GHz. Radio maps of the six stars, V410 Tau, T Tau, DG Tau, LkH-alpha 101, L1551 IRS5, and Z CMa, show unresolved cores of less than 0.5 arcsec in most cases, along with 1-2 arcsec, faint, extended structures. Mass loss rates, derived under the assumption of uniform spherical winds, range from approximately 3 x 10 to the -7th to about 4 x 10 to the -5th solar masses/year. Because the flows are highly anisotropic, however, these estimates are to be taken only as likely upper limits.

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