Astronomy:SDSS J143317.78+101123.3
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Short description: Binary star system in the constellation of Boötes
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14h 33m 17.7877s[1] |
| Declination | +10° 11′ 23.485″[1] |
| Characteristics | |
| J1433 | |
| Evolutionary stage | White dwarf |
| Spectral type | WD[citation needed] |
| J1433b | |
| Evolutionary stage | Brown dwarf |
| Spectral type | L1±1[citation needed] |
| Astrometry | |
| Proper motion (μ) | RA: −12.782[1] mas/yr Dec.: −53.117[1] mas/yr |
| Parallax (π) | 4.2866 ± 0.1566[1] mas |
| Distance | 760 ± 30 ly (233 ± 9 pc) |
| Absolute bolometric magnitude (Mbol) | 25[citation needed] |
| Orbit[2] | |
| Period (P) | 78.1 min |
| Semi-major axis (a) | 0.5869 R☉ |
| Inclination (i) | 84.36° |
| Semi-amplitude (K1) (primary) | 33.8 km/s |
| Semi-amplitude (K2) (secondary) | 511.1 km/s |
| Details | |
| J1433 | |
| Mass | 0.8[3] M☉ |
| Radius | 0.685[3] R☉ |
| Surface gravity (log g) | 8.41[2] cgs |
| Temperature | 13,200±200[4] K |
| J1433b | |
| Mass | 0.055±0.008[4] M☉ |
| Mass | 57.1+0.7−0.7[citation needed] MJup |
| Temperature | 2,401±10 K (day) 2,344±7 (night)[4] K |
| Other designations | |
J1433, PM J14332+1011, SDSS J143317.78+101122.8, Gaia EDR3 1176468611268115200,
Gaia DR2 1176468611268115200 | |
| J1433b: SDSS J143317.78+101122.8b | |
| Database references | |
| SIMBAD | data |
SDSS J143317.78+101123.3 (shortened to SDSS J1433+1011, more simply J1433) is a binary system composed of a white dwarf and a brown dwarf. The brown dwarf is about 57 Jupiter masses and has transitioned from a stellar object to a brown dwarf due to losing mass to the white dwarf. As of 2016, this was the only known binary of this type.[4]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 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.
- ↑ 2.0 2.1 Savoury, C. D. J.; Littlefair, S. P.; Dhillon, V. S.; Marsh, T. R.; Gänsicke, B. T.; Copperwheat, C. M.; Kerry, P.; Hickman, R. D. G. et al. (2011). "Cataclysmic variables below the period gap: Mass determinations of 14 eclipsing systems". Monthly Notices of the Royal Astronomical Society 415 (3): 2025. doi:10.1111/j.1365-2966.2011.18707.x. Bibcode: 2011MNRAS.415.2025S.
- ↑ 3.0 3.1 "J1433". http://www.exoplanetkyoto.org/exohtml/J1433.html.
- ↑ 4.0 4.1 4.2 4.3 Hernández Santisteban, Juan V.; Knigge, Christian; Littlefair, Stuart P.; Breton, Rene P.; Dhillon, Vikram S.; Gänsicke, Boris T.; Marsh, Thomas R.; Pretorius, Magaretha L. et al. (2016). "An irradiated brown-dwarf companion to an accreting white dwarf". Nature 533 (7603): 366–368. doi:10.1038/nature17952. PMID 27193683. Bibcode: 2016Natur.533..366H.
External links
- Stellar cannibalism transforms star into brown dwarf University of Southampton
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