ICCD SPECKLE OBSERVATIONS OF BINARY STARS .18. AN INVESTIGATION OF BESTARS

Citation
Bd. Mason et al., ICCD SPECKLE OBSERVATIONS OF BINARY STARS .18. AN INVESTIGATION OF BESTARS, The Astronomical journal, 114(5), 1997, pp. 2112-2116
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046256
Volume
114
Issue
5
Year of publication
1997
Pages
2112 - 2116
Database
ISI
SICI code
0004-6256(1997)114:5<2112:ISOOBS>2.0.ZU;2-L
Abstract
We report on a speckle interferometric survey for duplicity among a so uthern sky sample of Be stars. Within the detection regime of this spe ckle survey we find 5 binaries in a sample of 48 bright Be stars, and one of these, HD 54309, is a new discovery. A recent spectrum in the H alpha region of this star shows no obvious evidence of the companion. The binary frequency of Be stars in the observed period range is simi lar to that of dwarf stars in general. In addition to this survey, all past CHARA CCD observations of Be stars have been re-digitized and re -analyzed with the goal of further investigating stars of this type. R esults from this re-analysis are also presented. (C) 1997 American Ast ronomical Society.