VFTS 102
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Star VFTS 102 |
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| Artist's impression | |||||
| AladinLite | |||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Swordfish | ||||
| Right ascension | 05 h 37 m 39.23 s | ||||
| declination | −69 ° 09 ′ 51 ″ | ||||
| Apparent brightness | (15.81) mag | ||||
| Typing | |||||
| B − V color index | (0.29) | ||||
| U − B color index | (−0.87) | ||||
| R − I index | (0.96) | ||||
| Spectral class | O9: Vnnne + | ||||
| Astrometry | |||||
| distance | (179,000) ly (55,000) pc |
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| Proper movement | |||||
| Rec. Share: | (1.57 ± 0.07) mas / a | ||||
| Dec. portion: | (0.59 ± 0.07) mas / a | ||||
| Physical Properties | |||||
| Dimensions | 25 M ☉ | ||||
| Luminosity |
100,000 L ☉ |
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| Effective temperature | 36000 ± 5000 K | ||||
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Other names and catalog entries |
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VFTS 102 is a star in the Tarantula Nebula in the Large Magellanic Cloud . The star is considered to be the fastest rotating star. Its angular velocity is given as about 600 km / s. In other words, its speed at the equator is 2 million km / h. This rotation speed is therefore close to the highest possible rotation speed for this star. Greater speeds of rotation could tear the star apart because centripetal and centrifugal forces would no longer be in equilibrium. The mass of the star is 25 M ☉ . A possible explanation for the formation of the star is believed to be that the star in a binary system received matter from its second companion. When the second companion exploded in a supernova , VFTS 102 was ejected. The relatively young pulsar PSR J0537-6910 was found about 12 parsecs away , which could be the remains of the second companion.
Web links
Individual evidence
- ↑ a b c d e f UCAC2 1803231. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed on September 2, 2018 .
- ^ NR Walborn et al: The VLT-FLAMES Tarantula Survey - XIV. The O-type stellar content of 30 Doradus . In: Astronomy & Astrophysics . 574, 2014, p. A116. doi : 10.1051 / 0004-6361 / 201323082 .
- ^ Students for the Exploration and Development of Space
- ↑ a b c d P. L. Dufton, PR Dunstall et al .: arxiv : 1111.0157 The VLT-FLAMES Tarantula Survey: The fastest rotating O-type star and shortest period LMC pulsar - remnants of a supernova disrupted binary? . In: Astrophysical Journal Letters , December 6, 2011 ( arxiv : 1111.0157v2 )
- ↑ Maike Pollmann: Stern rotates record breaking. In a small neighboring galaxy to the Milky Way, a star rotates 300 times faster than the sun and is almost torn apart in the process. December 7, 2011, accessed April 8, 2018 .