dc.contributor.author |
Ghosh, K. K |
|
dc.date.accessioned |
2009-01-07T12:32:16Z |
|
dc.date.available |
2009-01-07T12:32:16Z |
|
dc.date.issued |
1989-09 |
|
dc.identifier.citation |
Publications Astronomical Society of the Pacific, Vol. 101, pp. 839 - 843 |
en |
dc.identifier.issn |
0004-6280 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/4246 |
|
dc.description.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. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Astronomical Society of the Pacific |
en |
dc.relation.uri |
http://adsabs.harvard.edu/abs/1989PASP..101..839G |
en |
dc.relation.uri |
http://dx.doi.org/10.1086/132504 |
en |
dc.subject |
B Stars |
en |
dc.subject |
Stellar Atmospheres |
en |
dc.subject |
Stellar Spectra |
en |
dc.subject |
Variable Stars |
en |
dc.subject |
Error Analysis |
en |
dc.subject |
H Alpha Line |
en |
dc.subject |
Nocturnal Variations |
en |
dc.subject |
Normal Density Functions |
en |
dc.title |
Search for rapid spectral variability in Psi(9) Aurigae |
en |
dc.type |
Article |
en |