Astronomy:11 Persei
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Short description: Star in the constellation Perseus
| Observation data Epoch J2000.0 Equinox (celestial coordinates) | |
|---|---|
| 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[1] mas |
| Distance | 418 ± 5 ly (128 ± 1 pc) |
| Absolute magnitude (MV) | 0.16[2] |
| Details | |
| Mass | 3.77±0.06[3] M☉ |
| Radius | 3.2[5] R☉ |
| Luminosity | 210.4+21.9 −19.9[3] L☉ |
| Surface gravity (log g) | 4.19[6] cgs |
| Temperature | 14,550[6] K |
| Metallicity [Fe/H] | +0.09[6] dex |
| Rotation | 25–70 d[7] |
| Rotational velocity (v sin i) | 4.50[8] km/s |
| Age | 50.9±12.2[9] Myr |
| Other designations | |
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 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, doi:10.1051/0004-6361/201117691, Bibcode: 2012A&A...537A.120Z.
- ↑ 4.0 4.1 Cowley, A. (November 1972), "Spectral classification of the bright B8 stars", Astronomical Journal 77: 750–755, doi:10.1086/111348, Bibcode: 1972AJ.....77..750C.
- ↑ Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics 367: 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
- ↑ 6.0 6.1 6.2 6.3 6.4 Ghazaryan, S.; Alecian, G. (2016), "Statistical analysis from recent abundance determinations in HgMn stars", Monthly Notices of the Royal Astronomical Society 460 (2): 1912, doi:10.1093/mnras/stw911, Bibcode: 2016MNRAS.460.1912G.
- ↑ Wahlgren, Glenn Michael et al. (January 2012), "Emission Line Variability In The HgMn Star 11 Per", American Astronomical Society, AAS Meeting #219, 219, pp. 439.04, 439.04, Bibcode: 2012AAS...21943904W.
- ↑ 8.0 8.1 8.2 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, doi:10.1051/0004-6361:20010894, Bibcode: 2001A&A...375..963H.
- ↑ 9.0 9.1 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, doi:10.1111/j.1365-2966.2010.17434.x, Bibcode: 2011MNRAS.410..190T.
- ↑ "11 Per". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=11+Per.
- ↑ 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ 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, doi:10.1002/asna.201011411, Bibcode: 2010AN....331..785A.
- ↑ 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.
- ↑ Appenzeller, Immo (April 1967), "MK Spectral Types for 185 Bright Stars", Publications of the Astronomical Society of the Pacific 79 (467): 102, doi:10.1086/128449, Bibcode: 1967PASP...79..102A.
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