Citation
Nr. Evans et J. Butler, THE COMPANION OF THE 18-DAY CLASSICAL CEPHEID YZ CARINAE, Publications of the Astronomical Society of the Pacific, 105(691), 1993, pp. 915-918
Citations number
15
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of the Pacific
ISSN journal
00046280
→ ACNP
Volume
105
Issue
691
Year of publication
1993
Pages
915 - 918
Database
ISI
SICI code
0004-6280(1993)105:691<915:TCOT1C>2.0.ZU;2-R
Abstract
We have obtained a deep IUE spectrum of the 18-day Cepheid YZ Carinae.
Flux has been detected at the level of 1-2 X 10(-15) ergs cm-2 angstr
om s-1 from 1200 to 2000 angstrom, which we identify as the companion
in the binary system. Since this is at least partly a result of ''came
ra artifacts'' built up during a long exposure, this is an upper limit
to the flux of the companion. The contribution of camera artifacts to
the spectrum is discussed. Both the flux level and crude color inform
ation (Table 1a) are consistent with a B8 V to A0 V star.