HD 62454 and HD 68192: Two New {gamma} Doradus Variables

Journal Article · Wed Dec 01 00:00:00 EST 1999 · Astronomical Journal

DOI:https://doi.org/10.1086/301136· OSTI ID:20216358

Kaye, Anthony B; Henry, Gregory W; Fekel, Francis C; Gray, Richard O; Rodriguez, Eloy; Martin, Susana; Gies, Douglas R; Bagnuolo, William G; Hall, Douglas S

We present multilongitude, multicolor photometry and simultaneous high-resolution, high signal-to-noise spectroscopy of the newly discovered {gamma} Doradus variables HD 62454 and HD 68192. From combined Johnson and Stroemgren data, we are able to identify five independent periods in HD 62454 and two stable periods in HD 68192. The data presented are sufficient to rule out all physically meaningful types of variations, with the one exception of the high-order, low-degree, nonradial gravity-mode pulsations that are believed to be at work in {gamma} Doradus stars. We also find that HD 62454 is a double-lined spectroscopic binary and we present an orbital solution. (c) (c) 1999. The American Astronomical Society.

• OSTI ID: 20216358
• Journal Information: Astronomical Journal, Vol. 118, Issue 6; Other Information: PBD: Dec 1999; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
VARIABLE STARS
BINARY STARS
PHOTOMETRY
VISIBLE SPECTRA
EMISSION SPECTRA
PULSATIONS
VARIATIONS
ORBITS
EXPERIMENTAL DATA