SS Cephei
In today's world, SS Cephei has become a topic of great relevance and interest to a wide range of people. Its impact and influence cover different areas, affecting both society as a whole and more specific aspects of daily life. Since its emergence, SS Cephei has sparked a series of debates and reflections around its meaning, its implications and its possible consequences. In this article, we will explore in depth the role that SS Cephei plays in the contemporary world, analyzing its relevance in different contexts and its influence on different aspects of modern life.
SS Cephei, as seen during the Sloan Digital Sky Survey | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cepheus[1] |
| Right ascension | 03h 49m 30.0153s[2] |
| Declination | +80° 19′ 20.902″[2] |
| Apparent magnitude (V) | 6.9 - 7.9[3] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M5III[5] |
| Variable type | SRb[3] |
| Astrometry | |
| Radial velocity (Rv) | −46.87±0.09[6] km/s |
| Proper motion (μ) | RA: −4.911[2] mas/yr Dec.: 12.062[2] mas/yr |
| Parallax (π) | 3.9187±0.1886 mas[2] |
| Distance | 830 ± 40 ly (260 ± 10 pc) |
| Absolute magnitude (MV) | +0.13[5] |
| Details | |
| Mass | 3.7[7] M☉ |
| Radius | 239[8] R☉ |
| Luminosity | 5,021[8] L☉ |
| Surface gravity (log g) | 2.33[7] cgs |
| Temperature | 3,830[7] K |
| Metallicity | −0.32[7] dex |
| Other designations | |
| BD+79°110, HD 22689, HIP 17881, SAO 594[9] | |
| Database references | |
| SIMBAD | data |
SS Cephei is a semiregular variable star in the constellation Cepheus. It is of spectral type M5III, and has an estimated temperature of about 3,700 K. The star is about 830 light-years (260 parsecs) from Earth. The brightness of SS Cephei varies between magnitude 6.9 and 7.9.
See also
References
- ^ "obj-Cep". britastro.org. Retrieved 2024-09-27.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
- ^ Olofsson, H.; González Delgado, D.; Kerschbaum, F.; Schöier, F. L. (2002). "Mass loss rates of a sample of irregular and semiregular M-type AGB-variables". Astronomy and Astrophysics. 391 (3): 1053. arXiv:astro-ph/0206172. Bibcode:2002A&A...391.1053O. doi:10.1051/0004-6361:20020841.
- ^ 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.
- ^ Famaey, B.; et al. (May 2009). "Spectroscopic binaries among Hipparcos M giants. I. Data, orbits, and intrinsic variations". Astronomy and Astrophysics. 498 (2): 627–640. arXiv:0901.0934. Bibcode:2009A&A...498..627F. doi:10.1051/0004-6361/200810698. S2CID 18739721.
- ^ a b c d Khalatyan, A.; Anders, F.; Chiappini, C.; Queiroz, A. B. A.; Nepal, S.; Dal Ponte, M.; Jordi, C.; Guiglion, G.; Valentini, M.; Torralba Elipe, G.; Steinmetz, M.; Pantaleoni-González, M.; Malhotra, S.; Jiménez-Arranz, Ó.; Enke, H.; Casamiquela, L.; Ardèvol, J. (2024). "Transferring spectroscopic stellar labels to 217 million Gaia DR3 XP stars with SHBoost". Astronomy and Astrophysics. 691: A98. arXiv:2407.06963. Bibcode:2024A&A...691A..98K. doi:10.1051/0004-6361/202451427.
- ^ a b McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017). "Fundamental parameters and infrared excesses of Tycho-Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433.
- ^ "V* SS Cep". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-02-28.
- ^ EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series. 1200. Noordwijk, Netherlands: ESA Publications Division. Bibcode:1997HIP...C......0E. ISBN 9290923997. Retrieved 3 October 2024.
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