THE SPECTRUM NEAR MAXIMUM LIGHT OF THE UNUSUAL R-CORONAE-BOREALIS VARIABLE DY PERSEI

Authors
KEENAN PC BARNBAUM C
Citation
Pc. Keenan et C. Barnbaum, THE SPECTRUM NEAR MAXIMUM LIGHT OF THE UNUSUAL R-CORONAE-BOREALIS VARIABLE DY PERSEI, Publications of the Astronomical Society of the Pacific, 109(739), 1997, pp. 969-976
Citations number
45
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
ISSN journal
00046280 → ACNP
Volume
109
Issue
739
Year of publication
1997
Pages
969 - 976
Database
ISI
SICI code
0004-6280(1997)109:739<969:TSNMLO>2.0.ZU;2-1
Abstract
DY Per was confirmed photometrically as an R CrB variable by Alksnis i n 1994. Spectra near maximum light show the high-speed ejection of mat ter (sodium at -174 km/sec(-1) in DY Per) characteristic of many of th ese variable stars. Moderate hydrogen deficiency may also be present. DY Per is remarkable in having a temperature many hundreds of degrees lower than most of the R CrB variables. It is unusual also in not show ing clear spectroscopic evidence of high luminosity.