Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....61..737b&link_type=abstract
Astronomy and Astrophysics, vol. 61, no. 5, Dec. 1977, p. 737-745. Research supported by the Deutsche Forschungsgemeinschaft.
Astronomy and Astrophysics
Astrophysics
33
Protostars, Stellar Spectrophotometry, T Tauri Stars, Variable Stars, Balmer Series, Early Stars, Emission Spectra, Line Spectra
Scientific paper
Simultaneous spectroscopic and photometric observations of the T Tauri-like star DR Tauri are reported. The spectrograms show a rich emission spectrum. The Balmer lines are strongly variable. They sometimes show a highly complex structure, and inverse P Cygni profiles were observed on two nights. The metallic lines are essentially undisplaced. Simultaneous photometry indicates irregular variations of the blue continuum by as much as 0.5 mag on a time-scale of one day and variations of more than two magnitudes on a time-scale of a few days. The observed spectral properties can be explained by assuming that DR Tauri is a protostar of about 1 M solar mass which has not yet reached its hydrostatic equilibrium Hayashi track.
Bertout Claude
Krautter Joachim
Moellenhoff Claus
Wolf Bernd
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