Fast variability of the outflow in the Z CMa system

Details Fast variability of the outflow in the Z CMa system Fast variability of the outflow in the Z CMa system

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.293l..73c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 293, p. L73-L77

Astronomy and Astrophysics

Astronomy

3

Variability, Stellar Spectra, Stellar Winds, Variable Stars, Pre-Main Sequence Stars, H Alpha Line, H Beta Line, D Lines, Accretion Disks

Scientific paper

High-resolution, time-resolved spectroscopic observations of Z CMa carried out on 1997 January 14-17 are presented. Large night-to-night and hour-to-hour variations in H-alpha, H-beta, and Na I D P Cygni absorptions, as well as an H-beta emission peak, were observed. Variations in the red wings of the hydrogen emission lines were also detected. The high-velocity wide-emission component on the blue side of H-alpha appeared on January 17. The observations are discussed in the framework of current wind models.

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