Abstract

Using the Dominion Astrophysical Observatory's 1.2-m McKellar Telescope, we have obtained spectra on 81 stars from the Hyades Cluster, the Coma Cluster, and selected H-beta standard stars. These spectra cover from 4500 Å to 6900 Å which includes both the H-β and H-α absorption lines. The H-β absorption line has a long history of being used as a temperature index and more recently, calibration of an H-α index has been established for photometric observations. Through spectrophotometric comparison of temperature indices from the H-α and H-β absorption lines we find the expected strong correlation between photometric indices based on the strength of these two lines. This result confirms that the H-α index is a strong indicator of temperature.

Degree

MS

College and Department

Physical and Mathematical Sciences; Physics and Astronomy

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2010-12-01

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd4110

Keywords

color index, H-alpha index, H-beta index, spectrophotometry

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