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http://hdl.handle.net/2248/4246| Title: | Search for rapid spectral variability in Psi(9) Aurigae |
| Authors: | Ghosh, K. K |
| Keywords: | B Stars Stellar Atmospheres Stellar Spectra Variable Stars Error Analysis H Alpha Line Nocturnal Variations Normal Density Functions |
| Issue Date: | Sep-1989 |
| Publisher: | Astronomical Society of the Pacific |
| Citation: | Publications Astronomical Society of the Pacific, Vol. 101, pp. 839 - 843 |
| Abstract: | Observations of Psi(9) Aur on five nights between January 29 and February 3, 1988 were conducted as part of a search for rapid spectral variability in Be stars. In addition, a series of H-alpha profiles with a time resolution of about 45 s was obtained for the star. A method for obtaining the standard deviation in continuum counts measurements is proposed. The estimated value of the standard deviation of the measured equivalent widths of the H-alpha profiles was obtained using the method of Chalabaev and Maillard (1983). Rapid variations of the standard deviations of continuum counts and H-alpha equivalent widths were not observed. For the continuum counts measurement standard deviations a few hourly variations and two night-to-night variations were found. |
| URI: | http://hdl.handle.net/2248/4246 |
| ISSN: | 0004-6280 |
| Appears in Collections: | IIAP Publications |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Search for rapid spectral variability in Psi(9) Aurigae | 602.28 kB | Adobe PDF |  View/Open |
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