circumstellar gas

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• Circumstellar disk — A circumstellar disk is a torus, pancake or ring shaped accumulation of matter composed of gas, dust, planetesimals, asteroids or collision fragments in orbit around a star. Around the youngest stars, they are the reservoirs of material out of… …   Wikipedia

• Herbig Ae/Be stars — are pre main sequence stars young ( …   Wikipedia

• T Tauri star — Drawing of a T Tauri star with a circumstellar accretion disc …   Wikipedia

• U Equulei — Constelación Equuleus Ascensión recta α 20h 57min 16,2s Declinación δ +02º 58’ 45’’ Distancia …   Wikipedia Español

• IK Tauri — Constelación Tauro Ascensión recta α 03h 53min 28,9s Declinación δ +11º 24’ 22’’ Distancia …   Wikipedia Español

• WW Vulpeculae — Constelación Vulpecula Ascensión recta α 19h 25min 58,8s Declinación δ +21º 12’ 31’’ Distancia …   Wikipedia Español

• 24 Canum Venaticorum — Constelación Canes Venatici Ascensión recta α 13h 34min 27.26s Declinación δ +49º 00’ 57.5’’ Distancia …   Wikipedia Español

• 55 Ursae Majoris — Aa/B Constelación Osa Mayor Ascensión recta α 11h 19min 07,90s Declinación δ +38º 11’ 08,0’’ Distancia …   Wikipedia Español

• Beta Pictoris — Starbox begin name=Beta PictorisStarbox image caption=Map of the Pictor constellation showing the position of Beta Pictoris.Starbox observe epoch=J2000 ra=05h 47m 17.1scite web|url=http://simbad.u strasbg.fr/simbad/sim id?protocol=html… …   Wikipedia

• Planet — This article is about the astronomical object. For other uses, see Planet (disambiguation) …   Wikipedia

• Nebular hypothesis — Star formation Interstellar medium Molecular cloud …   Wikipedia