Back La Superba AST La Superba Catalan La Superba German La Superba Spanish لا سوپربا Persian Y Canum Venaticorum Finnish Y Canum Venaticorum French La Superba Italian りょうけん座Y星 Japanese 라 수페르바 Korean
 Location of Y Canum Venaticorum | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Canes Venatici |
| Right ascension | 12h 45m 07.826s[1] |
| Declination | +45° 26′ 24.93″[1] |
| Apparent magnitude (V) | +4.86 to +7.32[2] |
| Characteristics | |
| Evolutionary stage | Asymptotic giant branch |
| Spectral type | C54J(N3)[3] |
| U−B color index | 6.62[4] |
| B−V color index | 2.54[4] |
| V−R color index | 1.75[5] |
| R−I color index | 1.38[5] |
| Variable type | SRb[3] |
| Astrometry | |
| Radial velocity (Rv) | 15.30[6] km/s |
| Proper motion (μ) | RA: −2.968[1] mas/yr Dec.: 13.063[1] mas/yr |
| Parallax (π) | 3.2222 ± 0.1744 mas[1] |
| Distance | 1,010 ± 50 ly (310 ± 20 pc) |
| Absolute magnitude (MV) | −1.203[7] |
| Details | |
| Mass | 1.2[8] M☉ |
| Radius | 315[9] R☉ |
| Luminosity | 4,400[10] – 9,400[11] L☉ |
| Surface gravity (log g) | +0.23[8] cgs |
| Temperature | 2,600 - 3,200[12] K |
| Metallicity [Fe/H] | −0.21[8] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
La Superba (Y CVn, Y Canum Venaticorum) is a strikingly red giant star in the constellation Canes Venatici. It is a carbon star and semiregular variable.
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ 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: 02025. Bibcode:2009yCat....102025S.
- ^ a b Ducati, J. R. (2002). "VizieR On-line Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237: 0. Bibcode:2002yCat.2237....0D.
- ^ a b Y CVn
- ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Gontcharov, G. A. (2017). "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)". VizieR On-line Data Catalog. Bibcode:2017yCat..90370769G.
- ^ a b c Anders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.; Jordi, C.; Girardi, L.; Brown, A. G. A.; Matijevic, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; de Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (1 August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy and Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. S2CID 131780028.
- ^ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017-10-01), "Fundamental parameters and infrared excesses of Tycho-Gaia stars", Monthly Notices of the Royal Astronomical Society, 471: 770–791, arXiv:1706.02208, doi:10.1093/mnras/stx1433, ISSN 0035-8711 La Superba's database entry at VizieR.
- ^ Milam, S. N.; Woolf, N. J.; Ziurys, L. M. (2009-01-01). "Circumstellar 12C/13C Isotope Ratios from Millimeter Observations of CN and CO: Mixing in Carbon- and Oxygen-Rich Stars". The Astrophysical Journal. 690: 837–849. Bibcode:2009ApJ...690..837M. doi:10.1088/0004-637X/690/1/837. ISSN 0004-637X. La Superba's database entry at VizieR.
- ^ Chandler, Colin Orion; et al. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.
- ^ Neilson, Hilding R.; Ignace, Richard; Smith, Beverly J.; Henson, Gary; Adams, Alyssa M. (2014). "Evidence of a Mira-like tail and bow shock about the semi-regular variable V CVn from four decades of polarization measurements". Astronomy & Astrophysics. 568: A88. arXiv:1407.5644. Bibcode:2014A&A...568A..88N. doi:10.1051/0004-6361/201424037. S2CID 56232181.
- ^ "50 Deep Sky Objects for 50mm Binoculars". Binocular Astronomy. Patrick Moore's Practical Astronomy Series. 2007. pp. 107–156. doi:10.1007/978-1-84628-788-6_9. ISBN 978-1-84628-308-6.
- ^ McCarthy, M. F. (1994). "Angelo Secchi and the Discovery of Carbon Stars". The MK Process at 50 Years. A Powerful Tool for Astrophysical Insight Astronomical Society of the Pacific Conference Series. 60: 224. Bibcode:1994ASPC...60..224M.