Molecular hydrogen emission from T Tauri stars

Details Molecular hydrogen emission from T Tauri stars Molecular hydrogen emission from T Tauri stars

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223l..41b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 223, July 1, 1978, p. L41-L43.

Other

73

Hydrogen, Infrared Spectra, Stellar Mass Ejection, Stellar Spectra, T Tauri Stars, Balmer Series, Line Spectra, Ultraviolet Radiation, Wavelengths

Scientific paper

Results are presented for a search for molecular hydrogen emission in the v = 1-0 S(1) line at 2.2 microns in five T Tauri stars, including T Tau itself, RY Tau, SU Aur, DK Tau, and HL Tau. Molecular hydrogen emission was detected only in T Tau; the results suggest that the emitting region is probably larger than 5 arcsec (2.5-sigma confidence level) and that the emission is probably centered on the star. Upper limits on the line strengths are given for the other four stars. Various excitation mechanisms for the H2 in T Tau are considered, and the mass-loss rate and neutral-particle density in the shocked region are estimated for the case of shock excitation.

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