Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...226l..25w&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 226, Nov. 15, 1978, p. L25-L28.
Astronomy and Astrophysics
Astronomy
13
Astronomical Spectroscopy, O Stars, Stellar Winds, Ultraviolet Astronomy, H Alpha Line, Helium, Stellar Mass Ejection, Supergiant Stars
Scientific paper
Spectra of He II 4686 A and H-alpha in Zeta Pup were obtained simultaneously with Copernicus ultraviolet scans of several P Cygni profiles in this O4 If supergiant with strong mass loss. The visible-wavelength data show significant variations in the profiles of both lines, consisting of doubling of the emission over times of less than a day. Recent theoretical calculations show that the observed profile variations in 4686 A can be produced by significant fluctuations in the wind density. The Copernicus data show less variability, although in one scan of the 1400-A Si IV doublet there appears to be a significant enhancement of the emission which may be correlated with one of the doublings observed in 4686 A and H-alpha, as though a density enhancement formed at low levels and then moved outward in the wind.
Snow P. Jr. Th.
Wegner Gary. A.
No associations
LandOfFree
Simultaneous visible and ultraviolet spectroscopy of stellar wind variability in Zeta Puppis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Simultaneous visible and ultraviolet spectroscopy of stellar wind variability in Zeta Puppis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simultaneous visible and ultraviolet spectroscopy of stellar wind variability in Zeta Puppis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1067013