Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-09-30
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
5 pages, 2 figures, To be published in the proceedings of the meeting 'Four decades of research on massive stars' in honor of
Scientific paper
We report on the preliminary results of a three-year monitoring campaign of Galactic and Magellanic LBVs with both moderate and high resolution spectroscopy. We have collected more than 500 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 summarize our detailed study of 15 years of high resolution H$\alpha$ spectroscopy 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 structure in the wind. These results are compared to our recent high resolution interferometric imaging of the $H$-band emitting region surrounding the star. We discuss recent observations of $\eta$ Car, highlighting its unusual recovery from the previous periastron passage. Our results on HDE 326823 indicate that the star has a short period binary orbit, with Roche Lobe overflow onto an unseen massive companion.
Brummelaar ten Th.
Gies Douglas R.
Monnier John D.
Morrison Nancy D.
Parks Robert J.
No associations
LandOfFree
Spectroscopy and Interferometry 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 Spectroscopy and Interferometry of Luminous Blue Variables, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopy and Interferometry of Luminous Blue Variables will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-669814