eclipsing binaries
11W Ursae Majoris variable — A W Ursae Majoris variable is a type of eclipsing binary variable star. These stars are close binaries, whose surfaces are in contact with one another. They are termed common envelope binaries because they essentially share material in their… …
12V505 Persei — A/B Constelación Perseus Ascensión recta α 02h 21min 12,96s Declinación δ +54º 30’ 36,3’’ Distancia …
13Epsilon Aurigae — A Epsilon Aurigae is located slightly below Capella, the brightest star in the constellation. Observation data Epoch J2000     &# …
14Contact binary — This article is about contact binary stars. For asteroids, see Contact binary (asteroid). In astronomy, a contact binary is a binary star system whose component stars are so close that they touch each other or have merged to share their gaseous… …
15Delta Capricorni — Location of δ Capricorni (left center) Observation data Epoch J2000.0      Equinox J2000.0 …
16GG Lupi — A/B Constelación Lupus Ascensión recta α 15h 18min 56,37s Declinación δ 40º 47’ 17,6’’ Distancia …
17star cluster — Astron. a number of stars of common origin held together as a group by gravitational attraction. Cf. globular cluster, open cluster, stellar association. * * * ▪ astronomy Introduction either of two general types of stellar assemblages held… …
18Eclipse — An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another. The term is derived from the ancient Greek noun gr. ἔκλειψις ( gr. ékleipsis ), from verb gr. ἐκλείπω ( gr. ekleípō ), I cease to exist, a …
19variable star — Astron. a star that varies markedly in brightness from time to time. Also called variable. [1780 90] * * * Star whose observed brightness varies noticeably in intensity. Pulsating variables expand and contract in cycles, pulsating rhythmically in …
20DP Leonis — Artist s rendering of DP Leo and its planetary companion Observation data Epoch J2000.0      Eq …
