Long-term Spectroscopic Variability of Luminous Blue Variables

Details Long-term Spectroscopic Variability of Luminous Blue Variables Long-term Spectroscopic Variability of Luminous Blue Variables

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21715411r&link_type=abstract

American Astronomical Society, AAS Meeting #217, #154.11; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

We report on the preliminary results of a three-year monitoring campaign of southern luminous blue variables with the Cassegrain and Echelle spectrographs at the CTIO 1.5 m telescope. We have collected more than 300 moderate-resolution spectra of 20 stars in the red portion of the optical spectrum, which includes the wind-sensitive transitions of H-alpha and He I 5876 and 6678 Angstroms. We present initial results on the variability of the sample. We find several stars exhibiting observational evidence of changes in the emission line morphology that reflect changes in the wind structure. We also present a detailed study of 15 years of high resolution H-alpha spectroscopy from Ritter Observatory of the prototypical luminous blue variable, P Cygni. We report on the discovery of discrete absorption components in P Cygni's H-alpha profile, and we discuss their relationship to the long-term photometric and emission line variability.

Affiliated with

Also associated with

No associations

Rating

Long-term Spectroscopic Variability of Luminous Blue Variables 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 Long-term Spectroscopic Variability of Luminous Blue Variables, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-term Spectroscopic Variability of Luminous Blue Variables will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1396162