1E 1751 + 7046 - a new FK comae candidate

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114429· OSTI ID:6120374

Fleming, T A; Gioia, I M; Maccacaro, T; Mereghetti, S

1E 1751 + 7046 is a star that was serendipitously detected by the Einstein Observatory Medium Sensitivity Survey. X-ray, optical, and radio observations of this star show it to have characteristics similar to the RS CVn binaries. However, repeated high-resolution spectroscopic observations fail to detect any significant radial-velocity variations. The possibility of the star being pre-main-sequence is dismissed because of its location and lack of photospheric Li I. This makes 1E 1751 + 7046 an attractive candidate for the recently proposed class of FK Comae stars. Although there is disagreement over the evolutionary status of these evolved stars, they are nonetheless interesting as exhibitors of extreme chromospheric and coronal activity. 31 references.

• Research Organization: Steward Observatory, Tucson, AZ; Harvard-Smithsonia Center for Astrophysics, Cambridge, MA; CNR, Istituto di Fisica Cosmica, Milan, Italy
• OSTI ID: 6120374
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 93; 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
ATMOSPHERES
BINARY STARS
CLASSIFICATION
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
IONIZING RADIATIONS
RADIAL VELOCITY
RADIATIONS
RADIOWAVE RADIATION
SPECTROPHOTOMETRY
STAR EVOLUTION
STARS
STELLAR ATMOSPHERES
VARIABLE STARS
VELOCITY
VISIBLE RADIATION
X RADIATION