Characteristics of the Wolf-Rayet star in the eclipsing system CQ Cep

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Sov. Astron. (Engl. Transl.); (United States)

OSTI ID:6269451

Lipunova, N A; Cherepashchuk, A M

The angle of inclination of the orbit (i = 65/sup 0/ +- 1/sup 0/) is found from an analysis of light curves of the system CQ Cep (WN 7+07, Vapprox. =8/sup m/.9, papprox. =1/sup d/.641) in U, V, and R filters. The parameter L/sub 3/, characterizing the relative luminosity of the ''uneclipsed'' common envelope in the CQ Cep system, is determined: L/sub 3/(U)approx. =0; L/sub 3/(V) = 0.10; L/sub 3/(R) = 0.29. The radius of the core of the WN 7 star is obtained, r/sub 0/ = (11 +- 1)R/sub sun/. The brightness and color temperatures (T/sub b/ and T/sub c/) of the core are found: T/sub b/> or approx. =50 000 /sup 0/K, T/sub c/roughly-equal50 000 /sup 0/K. The mass of the WN 7 star is approx.31 M/sub sun/. On the Hertzsprung-Russell diagram the core of the WN 7 star occupies a position intermediate between the main sequence and the sequence of homogeneous helium stars.

• Research Organization: P. K. Shternberg State Astronomical Institute
• OSTI ID: 6269451
• Journal Information: Sov. Astron. (Engl. Transl.); (United States), Journal Name: Sov. Astron. (Engl. Transl.); (United States) Vol. 26:5; ISSN SAAJA
• 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
BRIGHTNESS
COLOR
DIAGRAMS
HERTZSPRUNG-RUSSELL DIAGRAM
INCLINATION
LUMINOSITY
MAIN SEQUENCE STARS
MASS
OPTICAL PROPERTIES
ORBITS
ORGANOLEPTIC PROPERTIES
PHOTOMETRY
PHYSICAL PROPERTIES
SIZE
STARS
TEMPERATURE MEASUREMENT
WOLF-RAYET STARS