H1504+65

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H1504+65
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Minor
Right ascension 15h 02m 09.62s
Declination +66° 12′ 18.6″
Apparent magnitude (V) 15.9
Characteristics
Astrometry
Details
Temperature200,000 K
Other designations
WD 1501+663
Database references
SIMBADdata

H1504+65 is an enigmatic peculiar star in the constellation Ursa Minor. With a surface temperature of 200,000 K and an atmosphere composed of carbon, oxygen and 2% neon, it is the hottest white dwarf ever discovered. It is thought to be the stellar core of a post AGB star, though its composition is unexplainable by current models of stellar evolution.[1]

References[edit]

  1. ^ Werner, K.; Rauch, T. (2011). "UV spectroscopy of the hot bare stellar core H1504+65 with the HST Cosmic Origins Spectrograph". Astrophysics and Space Science. 335 (1): 121–24. Bibcode:2011Ap&SS.335..121W. doi:10.1007/s10509-011-0617-x.