Dissertation/Thesis Abstract

A Time Series Study of Rigel, a B8Ia Supergiant
by Rother, Sara, M.S., The University of Toledo, 2009, 81; 10835863
Abstract (Summary)

Rigel is a B8Ia spectral type, massive, supergiant star that is experiencing mass loss in the stellar wind. The study was done with data on Rigel that was taken over the course of 10 seasons, with 192 total observations. All observations were taken with the 1.06 meter telescope at the University of Toledo's Ritter Astrophysical Research Center. I looked for a periodic variation in the Hα line by looking at the equivalent widths and radial velocities, as well as classifying the profiles into seven categories and determining the frequency of occurrence of each. I also measured the radial velocities of a singly ionized carbon line. A high velocity absorption event, such as the 2 seen by Kaufer et. al. in 1993 and 1994, was also seen in 2006 in this study. No single, dominant periodic component was found in the radial velocity measurements of either line.

Indexing (document details)
Advisor: Morrison, Nancy
Commitee: Chandar, Rupali, Federman, Steven
School: The University of Toledo
Department: Physics
School Location: United States -- Ohio
Source: MAI 57/05M(E), Masters Abstracts International
Subjects: Astrophysics, Astronomy
Keywords: Beta ori, Rigel, Stellar astrophysics
Publication Number: 10835863
ISBN: 978-0-355-97043-2
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