HD 23514

HD 23514
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 03h 46m 38.3922s[1]
Declination +22° 55′ 11.200″[1]
Apparent magnitude (V) 9.43[2]
Characteristics
Spectral type F5V + M8[3]
U−B color index 0.02[2]
B−V color index 0.50[2]
Astrometry
Radial velocity (Rv)6.32±0.44[1] km/s
Proper motion (μ) RA: 19.924 mas/yr[1]
Dec.: -43.549 mas/yr[1]
Parallax (π)7.1526±0.0204 mas[1]
Distance456 ± 1 ly
(139.8 ± 0.4 pc)
Details
HD 23514 A
Mass1.35[4] M☉
Radius1.28 R☉
Luminosity2.8 L☉
Temperature6400[4] K
Metallicity9.95
Age120±10[3] Myr
HD 23514 B
Mass0.06±0.01[4] M☉
Temperature2600±100[4] K
Other designations
BD+22 550, HD 23514, SAO 76178, EPIC 210996505, TYC 1800-1574-1[2]
Database references
SIMBADdata

HD 23514 is a star in the Pleiades. It is a main-sequence star of class F6, and has been seen to have hot dust particles surrounding it. These materials, otherwise known as planetesimals which orbit within a circumstellar disc, are evidence of possible planetary formation.[4] The debris disk shows evidence of being rich in silica.[5]

The star system itself is very young, in the 35~100 million years range,[4] meaning that it is very well likely at the stage of forming planets.

HD 23514 has a brown dwarf companion (HD 23154 B) estimated to have a mass of about 0.06 ± 0.01 solar masses and a temperature of 2,600 ± 100 K and separated by about 360 AU from the primary.[4] The spectra of HD 23154 B have been found to have features typical of late-M dwarfs, including FeH absorption, strong CO bands and Na I absorption, and a near-infrared spectral type of M8 ± 1 has been proposed.[3]

The star will be continuously studied to confirm whether it may be a potential candidate for planetary formation.

References

  1. 1 2 3 4 5 6 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.
  2. 1 2 3 4 "HD 23514". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 September 2024.
  3. 1 2 3 Bowler, Brendan P.; Shkolnik, Evgenya L.; Liu, Michael C.; Schlieder, Joshua E.; Mann, Andrew W.; Dupuy, Trent J.; Hinkley, Sasha; Crepp, Justin R.; Johnson, John Asher; Howard, Andrew W.; Flagg, Laura (2015-06-09). "Planets Around Low-Mass Stars (PALMS). V. Age-Dating Low-Mass Companions to Members and Interlopers of Young Moving Groups". The Astrophysical Journal. 806 (1): 62. arXiv:1505.01494. Bibcode:2015ApJ...806...62B. doi:10.1088/0004-637X/806/1/62. hdl:10871/17603. ISSN 1538-4357. S2CID 444856.
  4. 1 2 3 4 5 6 7 Rodriguez, David R.; Marois, Christian; Zuckerman, B.; Macintosh, Bruce; Melis, Carl (2012). "A Substellar Companion to the Dusty Pleiades Star HD 23514". The Astrophysical Journal. 748 (1): 30. arXiv:1112.4815. Bibcode:2012ApJ...748...30R. doi:10.1088/0004-637X/748/1/30. S2CID 55022993.
  5. ↑ Meng, Huan Y. A.; Su, Kate Y. L.; Rieke, George H.; Rujopakarn, Wiphu; Myers, Gordon; Cook, Michael; Erdelyi, Emery; Maloney, Chris; McMath, James; Persha, Gerald; Poshyachinda, Saran (2015-05-21). "Planetary Collisions outside the Solar System: Time Domain Characterization of Extreme Debris Disks". The Astrophysical Journal. 805 (1): 77. arXiv:1503.05610. Bibcode:2015ApJ...805...77M. doi:10.1088/0004-637X/805/1/77. ISSN 1538-4357. S2CID 117096761.
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