astro.wikisort.org - StarHD 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]
Yellow-white hued main sequence star in the constellation Taurus
HD 23514
Observation data
Epoch J2000.0 Equinox J2000.0 |
| Constellation |
Taurus |
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| Right ascension |
03h 46m 38.3957s |
| Declination |
+22° 55′ 11.223″ |
| Apparent magnitude (V) |
9.43 |
| Characteristics |
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| Spectral type |
F6V |
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| U−B color index |
0.02 |
| B−V color index |
0.50 |
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| Variable type |
13.14 |
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| Astrometry |
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| 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 |
| Distance | 400 ly
(122.641 pc) |
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| Details |
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| Mass | 1.35 M☉ |
| Radius | 1.28 R☉ |
| Luminosity | 2.8 L☉ |
| Temperature | 6400 K |
| Metallicity | 9.95 |
| Age | 0.1 Gyr |
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| Other designations |
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HD 23514, SAO 76178, BD+22° 550, TYC 1800-1574-1, EPIC 210996505 |
| Database references |
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| SIMBAD | data |
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
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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.
- 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.
- 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.
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