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WD J0651+2844

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WD J0651+2844

A green band light curve for WD J0651+2844, adapted from Hermes et al. (2012)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini[2]
Right ascension 06h 51m 33.340s[3]
Declination 28° 44′ 23.45″[3]
Apparent magnitude (V) 19.06[4]
Characteristics
Spectral type DAH[5]
Astrometry
Proper motion (μ) RA: −1.097[3] mas/yr
Dec.: −7.511[3] mas/yr
Parallax (π)1.0071±0.3091 mas[3]
Distanceapprox. 3,200 ly
(approx. 1,000 pc)
Orbit[1]
Period (P)12.75344 minutes
Inclination (i)84.4°
Details[1]
A
Mass0.26 M☉
Radius0.0371 R☉
Temperature16,530 K
B
Mass0.50 M☉
Radius0.0142 R☉
Temperature8,700 K
Other designations
SDSS J065133.338+284423.37, SDSS J0651, J0651, SDSS J0651+2844, WD+WD J0651+2844
Database references
SIMBADdata

WD J0651+2844 is a white dwarf binary star system composed of two white dwarfs.[6] They are approximately 120,000 km apart and complete an orbit around their barycenter in less than 13 minutes.[1] This produces an eclipse every 6 minutes. This makes it possible to gather enough data to produce extremely accurate predictions of each future eclipse. The eclipse times deviate from the time predicted in a way consistent with gravitational waves.[7][8][9]

References

[edit]
  1. ^ a b c d Hermes, J. J.; et al. (2012). "Rapid Orbital Decay in the 12.75-minute Binary White Dwarf J0651+2844". The Astrophysical Journal Letters. 757 (2): L21. arXiv:1208.5051. Bibcode:2012ApJ...757L..21H. doi:10.1088/2041-8205/757/2/L21. S2CID 119108968.
  2. ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
  3. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. ^ Lasker, Barry M.; Lattanzi, Mario G.; McLean, Brian J.; Bucciarelli, Beatrice; Drimmel, Ronald; Garcia, Jorge; Greene, Gretchen; Guglielmetti, Fabrizia; Hanley, Christopher; Hawkins, George; Laidler, Victoria G.; Loomis, Charles; Meakes, Michael; Mignani, Roberto; Morbidelli, Roberto; Morrison, Jane; Pannunzio, Renato; Rosenberg, Amy; Sarasso, Maria; Smart, Richard L.; Spagna, Alessandro; Sturch, Conrad R.; Volpicelli, Antonio; White, Richard L.; Wolfe, David; Zacchei, Andrea (2008). "The Second-Generation Guide Star Catalog: Description and Properties". The Astronomical Journal. 136 (2): 735. arXiv:0807.2522. Bibcode:2008AJ....136..735L. doi:10.1088/0004-6256/136/2/735.
  5. ^ Kleinman, S. J.; Kepler, S. O.; Koester, D.; Pelisoli, Ingrid; Peçanha, Viviane; Nitta, A.; Costa, J. E. S.; Krzesinski, J.; Dufour, P.; Lachapelle, F. -R.; Bergeron, P.; Yip, Ching-Wa; Harris, Hugh C.; Eisenstein, Daniel J.; Althaus, L.; Córsico, A. (2013). "SDSS DR7 White Dwarf Catalog". The Astrophysical Journal Supplement Series. 204 (1): 5. arXiv:1212.1222. Bibcode:2013ApJS..204....5K. doi:10.1088/0067-0049/204/1/5.
  6. ^ "Space-warping white dwarfs produce gravitational waves". SpaceDaily. 3 September 2012.
  7. ^ "Space-warping white dwarfs produce gravitational waves". e! Science News. 28 August 2012. Retrieved 2012-09-01.
  8. ^ Palmer, J. (29 August 2012). "Gravitational waves spotted from white-dwarf pair". BBC News. Retrieved 2012-09-01.
  9. ^ "Einstein's space 'ripples' confirmed". United Press International. 28 August 2012. Retrieved 2012-09-01.


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