48 Persei
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 04h 08m 39.69216s[1] |
Declination | 47° 42′ 45.0429″[1] |
Apparent magnitude (V) | 4.03[2] |
Characteristics | |
Spectral type | B3Ve[3] |
U−B color index | -0.55[2] |
B−V color index | -0.03[2] |
Variable type | γ Cas[4] |
Astrometry | |
Radial velocity (Rv) | +0.80[5] km/s |
Proper motion (μ) | RA: +21.73[1] mas/yr Dec.: -33.61[1] mas/yr |
Parallax (π) | 6.84 ± 0.16 mas[1] |
Distance | 480 ± 10 ly (146 ± 3 pc) |
Absolute magnitude (MV) | -1.86[6] |
Details | |
Mass | 7.5[7] M☉ |
Luminosity | 600[6] L☉ |
Surface gravity (log g) | 3.86[8] cgs |
Temperature | 17,490[8] K |
Metallicity [Fe/H] | -0.04[9] dex |
Rotational velocity (v sin i) | 197[8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
48 Persei (also known as c Persei, 48 Per, HR 1273, HIP 19343, or HD 25940) is a Be star in the constellation Perseus, approximately the 500th brightest of the visible stars in apparent magnitude.[10] It is "well known for its complex spectrum and for its light and velocity variations".[11] The name "48 Persei" is a Flamsteed designation given to it by John Flamsteed in his catalogue, published in 1712.[12]
As a Be star, it is hot and blue, spinning so rapidly that it forms an unstable equatorial disk of matter surrounding it. Its mass has been estimated as seven times that of the Sun, and its estimated age of 40 million years makes it much younger than the Sun. In another few million years it will likely cease hydrogen fusion, expand, and brighten as it becomes a red giant.[13]
References
- ^ a b c d e Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
- ^ a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- ^ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
- ^ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S.
- ^ Evans, D. S. (1967). "The Revision of the General Catalogue of Radial Velocities". Determination of Radial Velocities and their Applications. 30: 57. Bibcode:1967IAUS...30...57E.
- ^ a b 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. Vizier catalog entry
- ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x.
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: CS1 maint: unflagged free DOI (link) Vizier catalog entry - ^ a b c Zorec, J.; Frémat, Y.; Domiciano De Souza, A.; Royer, F.; Cidale, L.; Hubert, A.-M.; Semaan, T.; Martayan, C.; Cochetti, Y. R.; Arias, M. L.; Aidelman, Y.; Stee, P. (2016). "Critical study of the distribution of rotational velocities of Be stars". Astronomy & Astrophysics. 595: A132. Bibcode:2016A&A...595A.132Z. doi:10.1051/0004-6361/201628760.
- ^ Wu, Yue; Singh, H. P.; Prugniel, P.; Gupta, R.; Koleva, M. (2010). "Coudé-feed stellar spectral library – atmospheric parameters". Astronomy & Astrophysics. 525: A71. arXiv:1009.1491. Bibcode:2011A&A...525A..71W. doi:10.1051/0004-6361/201015014.
- ^ 48 Persei (HIP 19343), Ashland Astronomy Studio, archived from the original on 2013-01-02, retrieved 2012-12-28.
- ^ Percy, J. R.; Lane, M. C. (May 1977), "Search for Beta Cephei stars. I - Photometric and spectroscopic studies of northern B-type stars", Astronomical Journal, 82: 353–359, Bibcode:1977AJ.....82..353P, doi:10.1086/112057.
- ^ Baily, Francis, ed. (1835), An account of the Revd. John Flamsteed, the first astronomer-royal: compiled from his own manuscripts, and other authentic documents, never before published. To which is added his British catalogue of stars, cor. and enl., Lords Commissioners of the Admiralty, p. 425.
- ^ Kaler, Jim (2009-01-16), "48 Per (48 Persei)", STARS, University of Illinois, retrieved 2012-12-28.
Further reading
- Jackisch, G. (1963), "Photoelectric and Spectroscopic Observations of 48 Persei and 53 Persei", Information Bulletin on Variable Stars, 40: 1, Bibcode:1963IBVS...40....1J.
- Baliunas, S. D.; Ciccone, M. A.; Guinan, E. F.; Miskinis, P. (1975), "Photoelectric Study of the Bright Be Stars γ Cas, 48 Per, ψ Per, and φ Per.", Bulletin of the American Astronomical Society, 7: 252, Bibcode:1975BAAS....7Q.252B.
- Goraya, P. S. (1985), "Recent changes in the spectrum of the Be star 48 Persei", Astrophysics and Space Science, 109 (2): 373–380, Bibcode:1985Ap&SS.109..373G, doi:10.1007/BF00651283.
- Tur, N. S.; Goraya, P. S.; Chaubey, U. S. (1987), "Continuum energy dissipation of 48 Persei", Astrophysics and Space Science, 139 (2): 257–262, Bibcode:1987Ap&SS.139..257T, doi:10.1007/BF00644354.
- Guo, Xiao-Zhen; Guo, Zi-He; Hao, Jin-Xin (1991), "A study of the low dispersion spectrum and photometry of the Be star 48 Per in 1989", Acta Astronomica Sinica, 32 (4): 415–420, Bibcode:1991AcASn..32..415G.
- Hao, Jinxin; Lin, Huang; Catala, C.; Foing, B. H. (1995), "Nonradial pulsations in 48 Persei: results from MUSICOS 1989 campaign", Multi-site Continuous Spectroscopy. Proceedings of the 4th workshop held in Beijing, China, June 19–24, 1994: 91, Bibcode:1995mscs.conf...91H.
- Hubert, A. M.; Floquet, M.; Hao, J. X.; et al. (1997), "Multi-site continuous spectroscopy. V. Rapid photospheric variability in the Be star 48 Persei from the MUSICOS 1989 campaign", Astronomy & Astrophysics, 324: 929–940, Bibcode:1997A&A...324..929H.
- Delaa, O.; Stee, Ph.; Meilland, A.; et al. (2011), "Kinematics and geometrical study of the Be stars 48 Persei and ψ Persei with the VEGA/CHARA interferometer", Astronomy & Astrophysics, 529: A87, Bibcode:2011A&A...529A..87D, doi:10.1051/0004-6361/201015639.