High-resolution spectroscopy of YY Orionis stars

Details High-resolution spectroscopy of YY Orionis stars High-resolution spectroscopy of YY Orionis stars

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236..416k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 2, Sept. 1990, p. 416-422.

Astronomy and Astrophysics

Astrophysics

20

Emission Spectra, Stellar Spectrophotometry, T Tauri Stars, Absorption Spectra, Balmer Series, Stellar Atmospheres, Stellar Mass Accretion, Stellar Spectra

Scientific paper

High-resolution spectrograms of the two YY Orionis stars VZ Cha and S CrA are presented. The S CrA spectrograms show the typical YY Orionis profiles familiar from earlier investigations. However, the redward-displaced absorption components of the emission lines appear significantly enhanced. The resolved emission line profiles of VZ Cha turned out to be quite different from all YY Orionis stars observed so far with high spectral resolution. The differences can be explained assuming different inclination angles and a different extent of the free fall region of these two mass accreting T Tauri stars.

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