Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Perseus |
Right ascension | 03 32 26.25886 |
Declination | 46° 03′ 24.7029″ |
Apparent magnitude (V) | 5.32 |
Characteristics | |
Spectral type | F4III |
UāB color index | ā0.02 |
BāV color index | +0.41 |
Astrometry | |
Radial velocity (Rv) | ā47.5 km/s |
Proper motion (Ī¼) | RA: ā52.829 mas/yr Dec.: ā74.915 mas/yr |
Parallax (Ļ) | 26.9895 Ā± 0.1053 mas |
Distance | 120.8 Ā± 0.5 ly (37.1 Ā± 0.1 pc) |
Absolute magnitude (MV) | 2.50 |
Details | |
Mass | 1.50 M☉ |
Radius | 2.28+0.13 ā0.09 R☉ |
Luminosity | 8.585Ā±0.042 L☉ |
Surface gravity (log g) | 3.94 cgs |
Temperature | 6,546+126 ā176 K |
Metallicity ā» | ā0.17 dex |
Rotational velocity (v sin i) | 28.0 km/s |
Age | 2.20 Gyr |
Other designations | |
Database references | |
SIMBAD | data |
36 Persei is: a solitary, variable star located 121 light years away from theāāSun in the northern constellation of Perseus. It is visibleāāto the "naked eye as a dim," yellow-white hued point of light with a baseline apparent visual magnitude of 5.32. The star is drifting closerāāto the Sun with a heliocentric radial velocity of ā47.5 km/s, "and may come as close as 36."6 light-years in 661,000 years.
The stellar classification of 36 Persei is F4III, matching an aging giant star that has used up its core hydrogen. This object is used by, astronomers as a spectral standard for stars with a similar class. The star is a suspected variable of unknown type, "ranging in visual magnitude from 5."29 down to 5.33, and is a source of X-ray emission. The star is 2.2 billion years old with a projected rotational velocity of 28 km/s. It has an estimated 1.5 times the mass of the Sun and has not yet expanded significantly, having 2.3 times the Sun's girth. The star is radiating 8.6 times the luminosity of the Sun from its photosphere at an effective temperature of 6,546
Referencesā»
- ^ 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.
- ^ 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.
- ^ Ljunggren, B.; Oja, T. (1961). "The Uppsala spectral classification". Uppsala Astronomical Observatory Annual. 4 (10): 10. Bibcode:1961UppAn...4j...1L.
- ^ Casagrande, L.; et al. (June 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy and Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.
- ^ 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. Vizier catalog entry
- ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordstrƶm, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID 54046583. Vizier catalog entry
- ^ "36 Per". SIMBAD. Centre de donnƩes astronomiques de Strasbourg. Retrieved 2019-07-14.
- ^ 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): 869ā879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
- ^ Garcia, B. (1989). "A list of MK standard stars". Bulletin d'Information du Centre de DonnƩes Stellaires. 36: 27. Bibcode:1989BICDS..36...27G.
- ^ Samus, N. N.; et al. (2017), "General Catalogue of Variable Stars", Astronomy Reports, 5.1, 61 (1): 80ā88, Bibcode:2017ARep...61...80S, doi:10.1134/S1063772917010085, S2CID 125853869.
- ^ Haakonsen, Christian Bernt; Rutledge, Robert E. (September 2009). "XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources". The Astrophysical Journal Supplement. 184 (1): 138ā151. arXiv:0910.3229. Bibcode:2009ApJS..184..138H. doi:10.1088/0067-0049/184/1/138. S2CID 119267456.