NGC 2363-V1
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The H II region NGC 2363 as seen by the Hubble Space Telescope. NGC 2363-V1 is the isolated bright star above and left of centre.[1] Credit: NASA/ESA |
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Camelopardalis |
| Right ascension | 07h 28m 43.37s[1] |
| Declination | +69° 11′ 23.9″[1] |
| Apparent magnitude (V) | 17.88[1] |
| Characteristics | |
| Evolutionary stage | LBV |
| Spectral type | LBV |
| Variable type | LBV |
| Astrometry | |
| Distance | 10,800,000 ly (3,300,000[2] pc) |
| Absolute magnitude (MV) | -10.25[1] |
| Details | |
| Mass | ~20[3] M☉ |
| Radius | ~200[4] R☉ |
| Luminosity (bolometric) | 6,300,000[4] L☉ |
| Temperature | 13,000 - 26,000[4] K |
| Metallicity [Fe/H] | -1 - -0.6[2] dex |
| Age | 4-5 million[5] years |
| Database references | |
| SIMBAD | data |
NGC 2363-V1 is a luminous blue variable star in the star-forming region NGC 2363, situated at the far southwestern part of the irregular galaxy NGC 2366 in the constellation Camelopardalis, near the North Celestial Pole. It was discovered in 1996 by Laurent Drissen, Jean-Rene Roy, and Carmelle Robert while examining images taken by the Hubble Space Telescope Wide Field Planetary Camera 2.[1]
NGC 2363-V1 is one of the most luminous stars known. It has been undergoing an increase in temperature and luminosity for the last 20 years, after a dramatic increase in its mass loss. Significant luminosity variations are very rare in LBVs, with the best example being Eta Carinae during its Great Eruption, but NGC 2363-V1 currently shows an extreme B hypergiant spectrum similar to P Cygni rather than the cool Eta Carinae outburst spectrum.[1][2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
