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- Q5174381 subject Q7009497.
- Q5174381 subject Q7465898.
- Q5174381 subject Q7465903.
- Q5174381 subject Q7725053.
- Q5174381 subject Q8442095.
- Q5174381 subject Q8508683.
- Q5174381 subject Q8691170.
- Q5174381 abstract "Z Canis Majoris (Z CMa) is a B-type star in the constellation of Canis Major. It has an average apparent visual magnitude of approximately 9.85, though has brightened by 1-2 magnitudes in irregular outbursts in 1987, 2000, 2004 and 2008.The star is a complex binary system only 300,000 years old with two main components separated by an estimated 100 astronomical units (AU) or 0.1" as seen from Earth. The southeast component is an FU Orionis star (a type of pre-main-sequence star) that is 1300 times as luminous as the Sun, has 3 times its mass and 13 times its diameter and a surface temperature of 10,000 K. The northwest component is a Herbig Ae/Be star that has been calculated to be 12 times as massive as the Sun with 1690 times its diameter, and shining with 2400 times its luminosity, though there is some uncertainty about its properties. It is enveloped in an irregular roughly spherical cocoon of dust that has an inner diameter of 20 and outer diameter of 50 AU. The cocoon has a hole in it through which light shines that covers an angle of 5 to 10 degrees of its circumference. Both stars are surrounded by a large envelope of in-falling material that left over from the original cloud that formed the system. Both stars are emitting jets of material, that of the Herbig Ae/Be star being much larger - up to 11.7 light-years (3.6 parsecs) long.It is unclear whether the most recent (and brightest) brightening in 2008 was due to the Herbig Ae/Be star increasing in luminosity or a hole appearing in the cocoon.".
- Q5174381 wikiPageWikiLink Q1044693.
- Q5174381 wikiPageWikiLink Q10538.
- Q5174381 wikiPageWikiLink Q1062509.
- Q5174381 wikiPageWikiLink Q111130.
- Q5174381 wikiPageWikiLink Q124313.
- Q5174381 wikiPageWikiLink Q1352333.
- Q5174381 wikiPageWikiLink Q1449592.
- Q5174381 wikiPageWikiLink Q1666400.
- Q5174381 wikiPageWikiLink Q179600.
- Q5174381 wikiPageWikiLink Q2703.
- Q5174381 wikiPageWikiLink Q523.
- Q5174381 wikiPageWikiLink Q555846.
- Q5174381 wikiPageWikiLink Q593448.
- Q5174381 wikiPageWikiLink Q7009497.
- Q5174381 wikiPageWikiLink Q7465898.
- Q5174381 wikiPageWikiLink Q7465903.
- Q5174381 wikiPageWikiLink Q7725053.
- Q5174381 wikiPageWikiLink Q8442095.
- Q5174381 wikiPageWikiLink Q845735.
- Q5174381 wikiPageWikiLink Q8508683.
- Q5174381 wikiPageWikiLink Q8691170.
- Q5174381 wikiPageWikiLink Q8928.
- Q5174381 wikiPageWikiLink Q957044.
- Q5174381 wikiPageWikiLink Q984158.
- Q5174381 type Place.
- Q5174381 type CelestialBody.
- Q5174381 type Location.
- Q5174381 type Place.
- Q5174381 type Star.
- Q5174381 type Thing.
- Q5174381 comment "Z Canis Majoris (Z CMa) is a B-type star in the constellation of Canis Major. It has an average apparent visual magnitude of approximately 9.85, though has brightened by 1-2 magnitudes in irregular outbursts in 1987, 2000, 2004 and 2008.The star is a complex binary system only 300,000 years old with two main components separated by an estimated 100 astronomical units (AU) or 0.1" as seen from Earth.".
- Q5174381 label "Z Canis Majoris".
- Q5174381 name "Z Canis Majoris".