FAST VARIABILITY OF THE OUTFLOW IN THE Z-CMA SYSTEM

Authors
CHOCHOL D TEODORANI M STRAFELLA F ERRICO L VITTONE AA
Citation
D. Chochol et al., FAST VARIABILITY OF THE OUTFLOW IN THE Z-CMA SYSTEM, Monthly Notices of the Royal Astronomical Society, 293(4), 1998, pp. 73-77
Citations number
12
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
293
Issue
4
Year of publication
1998
Pages
73 - 77
Database
ISI
SICI code
0035-8711(1998)293:4<73:FVOTOI>2.0.ZU;2-Y
Abstract
High-resolution, time-resolved spectroscopic observations of Z CMa car ried 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 absorpt ions, 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 appe ared on January 17. The observations are discussed in the framework of current wind models.