Spectrophotometry of the H. cap alpha. region in the spectrum of HR 1099 during the February 1978 radio flare

Journal Article · Fri Dec 01 04:00:00 EST 1978 · Astron. J.; (United States)

OSTI ID:6879585

Fraquelli, D A

Spectrophotometry of the H..cap alpha.. emission line in the spectrum of HR 1099 (=HD 22468=V711 Tauri) was obtained during the radio flare of February 1978. The profiles observed during the flare have higher peak intensities and larger equivalent widths than profiles obtained outside of the flare at approximately the same orbital phases. Both the general shapes of the profiles and the equivalent widths appear to correlate with the radio flux. A preflare profile exhibits a flare-type profile, suggesting that radio outbursts in RS CVn systems may be preceded by H..cap alpha.. enhancement.

• Research Organization: David Dunlap Observatory, University of Toronto, Toronto, Canada M5S 1A7
• OSTI ID: 6879585
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 83:12; ISSN ANJOA
• 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
BALMER LINES
BINARY STARS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
LINE WIDTHS
MATHEMATICAL MODELS
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
SPECTROPHOTOMETRY
STAR MODELS
STARS