Astronomy:WD J0651+2844
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Short description: Star in the constellation Gemini
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[3] mas |
| Distance | approx. 3,200 ly (approx. 1,000 pc) |
| Orbit[1] | |
| Period (P) | 12.75344 minutes |
| Inclination (i) | 84.4° |
| Details[1] | |
| A | |
| Mass | 0.26 M☉ |
| Radius | 0.0371 R☉ |
| Temperature | 16,530 K |
| B | |
| Mass | 0.50 M☉ |
| Radius | 0.0142 R☉ |
| Temperature | 8,700 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
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
- ↑ 1.0 1.1 1.2 1.3 Hermes, J. J. (2012). "Rapid Orbital Decay in the 12.75-minute Binary White Dwarf J0651+2844". The Astrophysical Journal Letters 757 (2): L21. doi:10.1088/2041-8205/757/2/L21. Bibcode: 2012ApJ...757L..21H.
- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R Constellation record for this object at VizieR.
- ↑ 3.0 3.1 3.2 3.3 3.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Lasker, Barry M.; Lattanzi, Mario G.; McLean, Brian J.; Bucciarelli, Beatrice; Drimmel, Ronald; Garcia, Jorge; Greene, Gretchen; Guglielmetti, Fabrizia et al. (2008). "The Second-Generation Guide Star Catalog: Description and Properties". The Astronomical Journal 136 (2): 735. doi:10.1088/0004-6256/136/2/735. Bibcode: 2008AJ....136..735L.
- ↑ Kleinman, S. J.; Kepler, S. O.; Koester, D.; Pelisoli, Ingrid; Peçanha, Viviane; Nitta, A.; Costa, J. E. S.; Krzesinski, J. et al. (2013). "SDSS DR7 White Dwarf Catalog". The Astrophysical Journal Supplement Series 204 (1): 5. doi:10.1088/0067-0049/204/1/5. Bibcode: 2013ApJS..204....5K.
- ↑ "Space-warping white dwarfs produce gravitational waves". SpaceDaily. 3 September 2012. http://www.spacedaily.com/reports/Space_warping_white_dwarfs_produce_gravitational_waves_999.html.
- ↑ "Space-warping white dwarfs produce gravitational waves". e! Science News. 28 August 2012. http://esciencenews.com/articles/2012/08/28/space.warping.white.dwarfs.produce.gravitational.waves.
- ↑ Palmer, J. (29 August 2012). "Gravitational waves spotted from white-dwarf pair". BBC News. https://www.bbc.co.uk/news/science-environment-19408363.
- ↑ "Einstein's space 'ripples' confirmed". United Press International. 28 August 2012. http://www.upi.com/Science_News/2012/08/28/Einsteins-space-ripples-confirmed/UPI-98791346199953/.
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