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- Q16837892 subject Q7009497.
- Q16837892 subject Q7465898.
- Q16837892 subject Q7465903.
- Q16837892 subject Q8284795.
- Q16837892 subject Q8691170.
- Q16837892 abstract "FS Canis Majoris (FS CMa), also known as HD 45677 or MWC 142, is a B-type star in the constellation of Canis Major. It has an apparent visual magnitude of approximately 8.50, having varied between magnitudes 7.35 and 8.58. Feinstein and colleagues reported in 1976 that it had decreased by 0.9 magnitude between 1969 and 1976, whereas it had only varied by 0.3 magnitude in the 70 years beforehand. Sometimes it could vary by up to 0.5 magnitude in a year or 0.1 magnitude in a night, and there did not appear to be any regular period to its variability.Astronomer Anatoly Miroshnichenko has made it the prototype of a new type of variable star, FS Canis Majoris stars. These are hot blue-white stars that exhibit forbidden line emission and strong infra-red excess suggestive of very young (pre-main-sequence) stars yet they do not lie in star-forming regions. Nor did they appear to be stars that had evolved off the main sequence into giant or supergiant stars. It is now thought that they are main sequence stars that have absorbed or are absorbing matter, most likely from a companion star, and are surrounded by a compact dusty shell. These stars are thought to be significant contributors to interstellar dust.Its spectral type has been previously classified as B2III to B2V and its bolometric magnitude as -4.89. However, investigation of its spectrum in 2006 showed that FS Canis Majoris is a binary system. The system is between 1250 and 8000 times as luminous as the Sun. One calculation has the masses of the primary and secondary at 9.3±0.5 and 4.8±0.9 solar masses and radii 6.6±0.5 and 2.9±0.6 times that of the Sun, and surface temperatures of 21,600±350 and 16,380±1670 K respectively.".
- Q16837892 wikiPageWikiLink Q10538.
- Q16837892 wikiPageWikiLink Q1062509.
- Q16837892 wikiPageWikiLink Q111130.
- Q16837892 wikiPageWikiLink Q11388.
- Q16837892 wikiPageWikiLink Q124313.
- Q16837892 wikiPageWikiLink Q1449592.
- Q16837892 wikiPageWikiLink Q159653.
- Q16837892 wikiPageWikiLink Q1666400.
- Q16837892 wikiPageWikiLink Q16744.
- Q16837892 wikiPageWikiLink Q179600.
- Q16837892 wikiPageWikiLink Q2703.
- Q16837892 wikiPageWikiLink Q523.
- Q16837892 wikiPageWikiLink Q555846.
- Q16837892 wikiPageWikiLink Q593448.
- Q16837892 wikiPageWikiLink Q6243.
- Q16837892 wikiPageWikiLink Q7009497.
- Q16837892 wikiPageWikiLink Q7465898.
- Q16837892 wikiPageWikiLink Q7465903.
- Q16837892 wikiPageWikiLink Q8284795.
- Q16837892 wikiPageWikiLink Q845735.
- Q16837892 wikiPageWikiLink Q8691170.
- Q16837892 wikiPageWikiLink Q8928.
- Q16837892 wikiPageWikiLink Q932483.
- Q16837892 wikiPageWikiLink Q978297.
- Q16837892 wikiPageWikiLink Q984158.
- Q16837892 type Place.
- Q16837892 type CelestialBody.
- Q16837892 type Location.
- Q16837892 type Place.
- Q16837892 type Star.
- Q16837892 type Thing.
- Q16837892 comment "FS Canis Majoris (FS CMa), also known as HD 45677 or MWC 142, is a B-type star in the constellation of Canis Major. It has an apparent visual magnitude of approximately 8.50, having varied between magnitudes 7.35 and 8.58. Feinstein and colleagues reported in 1976 that it had decreased by 0.9 magnitude between 1969 and 1976, whereas it had only varied by 0.3 magnitude in the 70 years beforehand.".
- Q16837892 label "FS Canis Majoris".
- Q16837892 name "FS Canis Majoris".