Radio observations of the binary stars UX Arietis and HR 1099

Journal Article · Mon Jan 31 23:00:00 EST 1977 · Astron. J.; (United States)

OSTI ID:7325684

Spangler, S R

The binary stars UX Arietis and HR 1099 have been observed at 2380 and 1400 MHz and UX Arietis was searched for at 430 MHz. A comparison of our observations with previous studies indicates that the radio spectra of these stars are typically flat from 1400 to 8085 MHz. A significant upper limit to the 430-MHz emission from UX Arietis was obtained, showing that the spectrum turns over between 1400 and 430 MHz. Circular polarization was detected in the 1400-MHz radiation from UX Arietis at a level of about 5%, and from HR 1099 at about 20%. It is suggested that the radio emission from these binaries is due to a gyrosynchrotron source which is optically thick to free--free absorption. Model-dependent source parameters are derived.

• Research Organization: National Radio Astronomy Observatory, Green Bank, West Virginia
• OSTI ID: 7325684
• Journal Information: Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 82:2; 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
BINARY STARS
BREMSSTRAHLUNG
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
GYROFREQUENCY
MATHEMATICAL MODELS
PLASMA
RADIATIONS
RADIOWAVE RADIATION
SPECTRA
STAR MODELS
STARS
SYNCHROTRON RADIATION