LP 40-365
Coordinates: 
14h 6m 35.45s, +74° 18′ 58″
14h 6m 35.45s, +74° 18′ 58″ Tangential movement of LP 40-365 between 1955 and 1995. The field of view is 8 × 8 arcminutes. Credit: Digitized Sky Survey | ||
| Observation data J2000
| ||
|---|---|---|
| Constellation | Ursa Minor | |
| Right ascension | 14h 06m 35.45s[1] | |
| Declination | +74° 18′ 58.0″[1] | |
| Apparent magnitude (V) | 15.51 ± 0.09[2] | |
| Characteristics | ||
| Spectral type | D[2] | |
| Absolute magnitude (MV) | 8.14+0.60 −0.90[2] | |
| Details Rotational velocity (v sin i)30.5 ± 2.0 km/s | | |
| Other designations | ||
| Database references | ||
| SIMBAD | data | |
LP 40-365 is a low-mass white dwarf star in the constellation Ursa Minor. It travels at high speed through the Milky Way and has a very unusual elemental composition, lacking hydrogen, helium or carbon. It may have been produced in a subluminous Type Iax supernova that failed to destroy its host star totally.[2]
[4][5] The "LP" name is derived from the Luyten-Palomar proper motion catalogue in which it appeared in the 1960s.[6] Another catalog name for this star is "GD 492".
Henry Giclas in 1970.[7]
References
- ^ Bibcode:2003yCat.2246....0C.
- ^ S2CID 24141207.
- ^ a b c "GD 492". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ "Science Press Release". Astroserver.org. Retrieved 17 August 2017.
- ^ Javier Barbuzano (17 August 2017). "The White Dwarf That Survived". Sky & Telescope.
- ^ Luyten, W. J. (1963–1981). "Proper Motion Survey with the 48 inch Schmidt Telescope". University of Minnesota.
- Bibcode:1970LowOB...7..183G.
External links
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