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Title:
A high precision radial velocity survey of K giants
Authors:
Mitchell, David S.
Affiliation:
AA(UNIVERSITY OF CALIFORNIA, SAN DIEGO)
Publication:
Thesis (PhD). UNIVERSITY OF CALIFORNIA, SAN DIEGO, Source DAI-B 65/08, p. 4067, Feb 2005, 251 pages.
Publication Date:
00/2004
Category:
Physics: Astronomy and Astrophysics
Origin:
UMI
Abstract Copyright:
(c) 2004: UMI Company
Comment:
Publication Number: 3142458; Advisor: Smith, Harding E.
Bibliographic Code:
2004PhDT........14M

Abstract

Precise radial velocity measurements of stars can provide a powerful tool for both examining the intrinsic atmospheric activity of the star, and testing for the existence of substellar orbital companions. This method has been used to detect the vast majority of known extrasolar planets, as well as probing the aster seismological characteristics of active stars. This dissertation presents the results of a precise radial velocity survey of 177 bright K giant stars. Six of the stars have data that indicate the presence of planetary or brown dwarf orbital companions. Many others have evidence of nonradial pulsations, and twenty binary stars are detected. The activity of several supergiants in the sample is analyzed, and the possibility of rotational modulation is examined. This survey represents the largest and most precise radial velocity data set of K giants ever created.
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