An RS Canum Venaticorum variable is a type of variable star. The variable type consists of close binary stars having active chromospheres which can cause...

RS Canum Venaticorum is a binary star system in the northern constellation of Canes Venatici. It serves as the prototype to the class of RS Canum Venaticorum...

less than 0.5 magnitudes (70% change in luminosity). Alpha2 Canum Venaticorum (α2 CVn) variables are main-sequence stars of spectral class B8–A7 that show...

be capable of flaring.[citation needed] The more massive RS Canum Venaticorum variables (RS CVn) are also known to flare, but it is understood that these...

Betelgeuse and Vega, which are also variable. The system has been classified as an RS Canum Venaticorum variable, a class of binary stars with active...

Tucana. It has an apparent visual magnitude of 8.5, and is a RS Canum Venaticorum variable. The system is notable for being young as a member of the 45...

spectroscopic binary star with a period of 480 years, and a suspected RS Canum Venaticorum variable. The primary is a yellow-hued star of magnitude 3.5 and the...

classified as an RS Canum Venaticorum variable and its brightness varies by 0.01 magnitude. Component B is believed to be the variable star, showing characteristic...

Gliese 268 (QY Aurigae) is a RS Canum Venaticorum variable (RS CVn) star in the Auriga constellation. RS CVn variables are binary star systems with a...

G0V star. It is listed in the General Catalog of Variable Stars as an RS Canum Venaticorum variable, varying between visual magnitude 4.38 and 4.41. Stępień...

least one giant or supergiant component KE = contact binary RS = RS Canum Venaticorum variable SD = semi-detached binary "MAST: Barbara A. Mikulski Archive...

2009. Only slightly farther away is V478 Lyrae, an eclipsing RS Canum Venaticorum variable whose primary star shows active starspot activity. One of the...

consuming the hydrogen at its core. HR 5110 is classified as a RS Canum Venaticorum variable system, primarily due to chromospheric activity in the secondary...

22. A yellow giant of spectral type G5III, the primary is a RS Canum Venaticorum variable star. It is a spectroscopic binary, with a companion 0.36 AU...

the Sun. The system is classified as either a RS Canum Venaticorum variable or a BY Draconis variable, stars that vary on account of prominent starspot...

proper-motion Star B: LHS 438 -- High proper-motion Star C: V* V2215 Oph -- Variable of RS CVn type Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia...

supergiants Luminous blue variable Gamma Cassiopeiae variable R Coronae Borealis variable Eruptive binary RS Canum Venaticorum variable Cataclysmic or explosive...

secondary has been detected using interferometry. It is an RS Canum Venaticorum variable system with eclipses. The total amplitude of variation is only...

orbiting each other every 20 days, the brighter component a RS Canum Venaticorum variable. Kappa Andromedae is a blue white star of apparent magnitude...

slightly less massive and slightly dimmer than the Sun. This is an RS Canum Venaticorum variable star with its luminosity varying by 0.033 magnitudes over a...

have an active chromosphere and is classified as an RS Canum Venaticorum variable with a variable star designation of BU Cet. The star was detected as...

naked eye of an observer far from city lights. AY Ceti is an RS Canum Venaticorum variable (RS CVn) star, varying in brightness from magnitude 5.35 to 5...

H-alpha emission lines. In 1979, this object was shown to be an RS Canum Venaticorum variable (RS CVn) by D. Crampton and associates, which indicated this is...

hydrogen fusion. It is an active star that is classified as a RS Canum Venaticorum variable, showing a rotational modulation with a period of 6.9 days,...

constellation Boötes. It has the variable star designation DE Boötis, and is classified as an RS Canum Venaticorum variable that ranges in apparent visual...

(1991), "1991 V Photometry of CG Cyg and a Possible New Variable", Information Bulletin on Variable Stars, 3688: 1, Bibcode:1991IBVS.3688....1H Kozhevnikova...

In astronomy, cataclysmic variable stars (CVs) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent...

temperature of about 4,300 K. Rho Boötis is classified as a RS Canum Venaticorum variable. Koen and Eyer examined the Hipparcos data for this star, and...

system of the RS Canum Venaticorum variable class. Given its average magnitude of around 5.9, it is one of the brighter known variables of this type....

having spots or different temperatures. This would make it an RS Canum Venaticorum variable. The period has since been refined to 59 days and this is now...