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11 Persei
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Perseus
Right ascension 02h 43m 02.83826s [1]
Declination +55° 06′ 21.6700″ [1]
Apparent magnitude (V) 5.76 [2]
Characteristics
Evolutionary stage main sequence [3]
Spectral type B7 III(p?) (Hg?) [4]
B−V color index −0.110±0.003 [2]
Astrometry
Radial velocity (Rv)−0.7±1.0 [2] km/s
Proper motion (μ) RA: +34.859 [1]  mas/ yr
Dec.: −21.955 [1]  mas/ yr
Parallax (π)7.8022 ± 0.0874  mas [1]
Distance418 ± 5  ly
(128 ± 1  pc)
Absolute magnitude (MV)0.16 [2]
Details
Mass3.77±0.06 [3]  M☉
Radius3.2 [5]  R☉
Luminosity210.4+21.9
−19.9 [3]  L☉
Surface gravity (log g)4.19 [6]  cgs
Temperature14,550 [6]  K
Metallicity [Fe/H]+0.09 [6]  dex
Rotation25–70 d [7]
Rotational velocity (v sin i)4.50 [8] km/s
Age50.9±12.2 [9]  Myr
Other designations
11 Per, BD+54°598, FK5 2188, HD 16727, HIP 12692, HR 785, SAO 23555 [10]
Database references
SIMBAD data

11 Persei is a single [11] [8] star in the constellation of Perseus, located about 418  light years away from the Sun. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.76. [2]

This is a chemically peculiar mercury-manganese star. [12] [6] Cowley (1972) found a stellar classification of B7 III(p?) (Hg?), [4] while Hube (1970) had B8 IV, [13] and Appenzeller (1967) showed B6 V. [14] Stellar models indicate this is a young B-type main sequence star [3] with an estimated age of around 51 [9] million years. It has a low rotation rate, showing a projected rotational velocity of 4.50 km/s. [8] The star has 3.8 [3] times the mass of the Sun and is radiating 210 [3] times the Sun's luminosity from its photosphere at an effective temperature of 14,550 K. [6]

References

  1. ^ a b c d e 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. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e 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.
  3. ^ a b c d e f Zorec, J.; Royer, F.; Asplund, Martin; Cassisi, Santi; Ramirez, Ivan; Melendez, Jorge; Bensby, Thomas; Feltzing, Sofia (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy and Astrophysics, 537: A120, arXiv: 1201.2052, Bibcode: 2012A&A...537A.120Z, doi: 10.1051/0004-6361/201117691, S2CID  55586789.
  4. ^ 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.
  5. ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics, 367 (Third ed.): 521–524, arXiv: astro-ph/0012289, Bibcode: 2001A&A...367..521P, doi: 10.1051/0004-6361:20000451, S2CID  425754.
  6. ^ a b c d e Ghazaryan, S.; Alecian, G. (2016), "Statistical analysis from recent abundance determinations in HgMn stars", Monthly Notices of the Royal Astronomical Society, 460 (2): 1912, Bibcode: 2016MNRAS.460.1912G, doi: 10.1093/mnras/stw911.
  7. ^ Wahlgren, Glenn Michael; et al. (January 2012), "Emission Line Variability In The HgMn Star 11 Per", American Astronomical Society, AAS Meeting #219, vol. 219, p. 439.04, Bibcode: 2012AAS...21943904W, 439.04.
  8. ^ a b c Hubrig, S.; Castelli, F. (September 2001), "New results of magnetic field diagnosis in HgMn stars and normal late B-type stars", Astronomy and Astrophysics, 375 (3): 963–976, Bibcode: 2001A&A...375..963H, doi: 10.1051/0004-6361:20010894.
  9. ^ a b Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv: 1007.4883, Bibcode: 2011MNRAS.410..190T, doi: 10.1111/j.1365-2966.2010.17434.x, S2CID  118629873.
  10. ^ "11 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-28.
  11. ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv: 0806.2878, Bibcode: 2008MNRAS.389..869E, doi: 10.1111/j.1365-2966.2008.13596.x, S2CID  14878976.
  12. ^ Adelman, S. J.; Yüce, K. (August 2010), "Elemental abundance analyses with Coudé Echelle spectrograms from the TÜBİTAK National Observatory of Turkey: I. The HgMn stars 11 Per, HR 2801, and ν Cnc", Astronomische Nachrichten, 331 (8): 785–793, Bibcode: 2010AN....331..785A, doi: 10.1002/asna.201011411.
  13. ^ Hube, Douglas P. (1970), "The radial velocities of 335 late B-type stars", Memoirs of the Royal Astronomical Society, 72: 233–280, Bibcode: 1970MmRAS..72..233H.
  14. ^ Appenzeller, Immo (April 1967), "MK Spectral Types for 185 Bright Stars", Publications of the Astronomical Society of the Pacific, 79 (467): 102, Bibcode: 1967PASP...79..102A, doi: 10.1086/128449.
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