X-ray, UV, and optical observations of the dwarf nova BV Puppis

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Publ. Astron. Soc. Pac.; (United States)

DOI:https://doi.org/10.1086/131913· OSTI ID:6447496

Szkody, P; Howell, S B; Kennicutt, R

Exosat, IUE, optical spectroscopic, and broad-band photometric data on BV Pup are presented and analyzed in order to study the system characteristics and their relation to the high excitation of the emission lines. It is observed that: (1) at quiescence and outburst, the He II 4686 A/H-beta ratio for the star is larger than for other observed dwarf novae; (2) the X-ray flux is high for a system at outbursts and the X-ray flux correlates with an increased He II flux over the quiescent values; (3) the flat slope of the flux distribution at quiescence implies relatively low accretion rate; and (4) the abnormal UV line spectrum suggests a different geometry/opacity for the line emission zone compared to normal dwarf novae. 21 references.

• Research Organization: Washington Univ., Seattle; Kitt Peak National Observatory, Tucson, AZ; SASC Technologies, Inc., Lanham, MD; Minnesota Univ., Minneapolis
• OSTI ID: 6447496
• Journal Information: Publ. Astron. Soc. Pac.; (United States), Journal Name: Publ. Astron. Soc. Pac.; (United States) Vol. 98; ISSN PASPA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DWARF STARS
EMISSION SPECTRA
ERUPTIVE VARIABLE STARS
NOVAE
PHOTOMETRY
SPECTRA
STAR ACCRETION
STAR EVOLUTION
STARS
ULTRAVIOLET SPECTRA
VARIABLE STARS
VISIBLE SPECTRA
X-RAY SPECTRA