HD 23514

Summary

HD 23514
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Taurus
Right ascension 03h 46m 38.3957s
Declination +22° 55′ 11.223″
Apparent magnitude (V) 9.43
Characteristics
Spectral type F6V
U−B color index 0.02
B−V color index 0.50
Variable type 13.14
Astrometry
Radial velocity (Rv)12.5 ± 02 km/s
Proper motion (μ) RA: 21.1 -43.0 mas/yr
Dec.: 1.1 1.0 90 mas/yr
Distance400 ly
(122.641 pc)
Details
Mass1.35 M
Radius1.28 R
Luminosity2.8 L
Temperature6400 K
Metallicity9.95
Age0.1 Gyr
Other designations
HD 23514, SAO 76178, BD+22° 550, TYC 1800-1574-1, EPIC 210996505
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 orbiting around it. These materials, otherwise known as planetesimals which orbit within a circumstellar disc, are evidence of possible planetary formation.[1] The debris disk shows evidence of being rich in silica.[2]

The star system itself is very young, in the 35~100 million years range,[1] 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 ± 100K, and separated by about 360 AU from the primary.[1] 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. ^ a b c 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.
  2. ^ 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. doi:10.1088/0004-637X/805/1/77. ISSN 1538-4357. S2CID 117096761.
  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. doi:10.1088/0004-637X/806/1/62. hdl:10871/17603. ISSN 1538-4357. S2CID 444856.