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WD 0346+247

White dwarf in the constellation Taurus

Summary

White dwarf in the constellation Taurus

| b-v = +1.44 | u-b = +0.30

WD 0346+247 is a white dwarf in the ecliptic constellation of Taurus. It was discovered in 1997 when examination of photographs taken for a survey of brown dwarfs in the Pleiades revealed a faint star with high proper motion. It is one of the coolest white dwarfs known, with an effective temperature estimated to be approximately , equivalent to a spectral type of M0. Although referred to as WD 0346+246 in the discovery paper, it is more correctly designated WD 0346+247.

Recent studies using NASA's Spitzer Space Telescope and MDM Observatory's 2.4-meter telescope (near Tucson, Arizona, USA) shows that this white dwarf (together with another one: SDSS J110217.48+411315.4) has a low (for white dwarfs) surface temperature between 3,700 and due to it being 11 to 12 billion years old.

References

References

  1. {{cite constellation. WD 0343+247
  2. {{cite Gaia DR3. 66837563803594880
  3. (2021). "The Gaia DR2 halo white dwarf population: The luminosity function, mass distribution, and its star formation history". Monthly Notices of the Royal Astronomical Society.
  4. "WD 0343+247".
  5. (1997). "WD 0346+246: A Very Low Luminosity, Cool Degenerate in Taurus". The Astrophysical Journal.
  6. (2014). "Entry for WD 0642-166". [[Centre de Données astronomiques de Strasbourg.
  7. (April 26, 2012). "12-Billion-Year-Old White-Dwarf Stars Only 100 Light-Years Away".
Wikipedia Source

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taurus-(constellation) white-dwarfs
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