HD 23753
  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 03h 48m 20.81702s[1] |
| Declination | +23° 25′ 16.5006″[1] |
| Apparent magnitude (V) | 5.44[2] |
| Characteristics | |
| Evolutionary stage | main sequence[3] |
| Spectral type | B9 Vn[4] |
| B−V color index | −0.067±0.008[2] |
| Astrometry | |
| Radial velocity (Rv) | +7.6±0.5[5] km/s |
| Proper motion (μ) | RA: +19.481[1] mas/yr Dec.: −47.434[1] mas/yr |
| Parallax (π) | 7.7224 ± 0.1918 mas[1] |
| Distance | 420 ± 10 ly (129 ± 3 pc) |
| Absolute magnitude (MV) | 0.00[2] |
| Details | |
| Mass | 3.21±0.07[3] M☉ |
| Radius | 3.2[6] R☉ |
| Luminosity | 150.0+16.2 −14.8[3] L☉ |
| Temperature | 11,535+80 −79[3] K |
| Rotation | 0.6994 d[7] |
| Rotational velocity (v sin i) | 335[3] km/s |
| Age | 125[8] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 23753 is a single[10] star in the equatorial zodiac constellation of Taurus, and is a member of the Pleiades open cluster.[11] It is dimly visible to the naked eye with an apparent visual magnitude of 5.44.[2] The distance to this star, as determined from its annual parallax shift of 7.7 mas,[1] is about 420 light years. It is moving further from the Earth with a heliocentric radial velocity of +8 km/s.[5] The star is positioned near the ecliptic and so is subject to lunar occultations.[12]
This is a B-type main-sequence star with a stellar classification of B9 Vn,[4] where the 'n' indicates "nebulous" lines due to rapid rotation. It is 125[8] million years old with a projected rotational velocity of 335 km/s,[3] completing a full revolution about its axis every 16.79 hours.[7] HD 23753 has been catalogued as a suspected variable star with the designation NSV 1321,[13] although the amplitude is no more than 0.1 magnitude and it may even be suitable for a photometric standard.[14] Wraight et al. report that STEREO detected very shallow eclipses, with a period of 2.2663 days, during which the brightness falls by 1%.[15]
HD 23753 has 3.21[3] times the mass of the Sun and 3.2[6] times the Sun's radius. It is radiating 150[3] times the Sun's luminosity from its photosphere at an effective temperature of 11,535 K.[3]
See also
[edit]References
[edit]- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051.
- ^ a b c d Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID 119257644.
- ^ a b c d e f g h i Zorec, J.; Royer, F. (January 2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics, 537: A120, arXiv:1201.2052, Bibcode:2012A&A...537A.120Z, doi:10.1051/0004-6361/201117691, S2CID 55586789.
- ^ a b Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal, 77: 750–755, Bibcode:1972AJ.....77..750C, doi:10.1086/111348.
- ^ a b de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics, 546: 14, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
- ^ a b Pasinetti Fracassini, L. E.; et al. (2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy & Astrophysics, 367 (2) (3rd ed.): 521–24, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451, S2CID 425754.
- ^ a b Rebull, L. M.; et al. (November 2016), "Rotation in the Pleiades with K2. I. Data and First Results", The Astronomical Journal, 152 (5): 19, arXiv:1606.00052, Bibcode:2016AJ....152..113R, doi:10.3847/0004-6256/152/5/113, S2CID 67820148, 113.
- ^ a b Su, K. Y. L.; et al. (December 2006), "Debris Disk Evolution around A Stars", The Astrophysical Journal, 653 (1): 675–689, arXiv:astro-ph/0608563, Bibcode:2006ApJ...653..675S, doi:10.1086/508649, S2CID 14116473.
- ^ "HD 161840". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-08-06.
- ^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ White, Richard E.; et al. (February 2001), "Interstellar Matter Near the Pleiades. V. Observations of NA I toward 36 Stars", The Astrophysical Journal Supplement Series, 132 (2): 253–280, Bibcode:2001ApJS..132..253W, doi:10.1086/318950
- ^ Eitter, J. J.; Beavers, W. I. (August 1977), "Lunar occultation summary. II", Astrophysical Journal Supplement Series, 34: 493–504, Bibcode:1977ApJS...34..493E, doi:10.1086/190460
- ^ Samus', N. N.; et al. (2017), "General catalogue of variable stars: Version GCVS 5.1", Astronomy Reports, 61 (1): 80–88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- ^ Adelman, S. J.; et al. (October 2000), "On the Variability of Late B III-V Stars", Information Bulletin on Variable Stars, 4968: 1, Bibcode:2000IBVS.4968....1A.
- ^ Wraight, K. T.; White, Glenn J.; Bewsher, D.; Norton, A. J. (October 2011). "STEREO observations of stars and the search for exoplanets". Monthly Notices of the Royal Astronomical Society. 416 (4): 2477–2493. arXiv:1103.0911. Bibcode:2011MNRAS.416.2477W. doi:10.1111/j.1365-2966.2011.18599.x. S2CID 2133517.
