R Corvi
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Corvus[2] |
| Right ascension | 12h 19m 37.8707s[3] |
| Declination | −19° 15′ 21.862″[3] |
| Apparent magnitude (V) | 6.7 to 14.4[2] |
| Characteristics | |
| Evolutionary stage | AGB[4] |
| Spectral type | M4.5e-M9e[2] |
| U−B color index | +0.16[5] |
| B−V color index | +1.53[5] |
| Variable type | Mira[2] |
| Astrometry | |
| Radial velocity (Rv) | −22.00[6] km/s |
| Proper motion (μ) | RA: −4.247[3] mas/yr Dec.: −8.663[3] mas/yr |
| Parallax (π) | 1.2136±0.0718 mas[3] |
| Distance | 2,700 ± 200 ly (820 ± 50 pc) |
| Details | |
| Mass | 3.4[7] M☉ |
| Surface gravity (log g) | 1.59[7] cgs |
| Temperature | 3,857[7] K |
| Metallicity [Fe/H] | −0.38[7] dex |
| Other designations | |
| R Cvr, BD−18°3367, HD 107199, HIP 60106, SAO 157211[8] | |
| Database references | |
| SIMBAD | data |
R Corvi (R Crv) is a Mira variable star in the constellation Corvus, which ranges from a magnitude of 6.7 to 14.4 with a period of approximately 317 days.[2] In the sky it appears close to Gamma Corvi and can be seen in the same binocular field.[9] Extrapolating its luminosity from its period of 317 days yields a distance of 810 parsecs.[4]
Franciszek Karliński discovered that the star's brightness varies, in 1867.[10]
References
[edit]- ↑ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
- 1 2 3 4 5 VSX (4 January 2010). "R Corvi". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 May 2014.
- 1 2 3 4 5 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.
- 1 2 Whitelock, Patricia A.; Feast, Michael W.; Van Leeuwen, Floor (2008). "AGB variables and the Mira period-luminosity relation". Monthly Notices of the Royal Astronomical Society. 386 (1): 313. arXiv:0801.4465. Bibcode:2008MNRAS.386..313W. doi:10.1111/j.1365-2966.2008.13032.x.
- 1 2 Myers, J. R.; Sande, C. B.; Miller, A. C.; Warren, W. H., Jr.; Tracewell, D. A. (2015). "VizieR Online Data Catalog: SKY2000 Master Catalog, Version 5 (Myers+ 2006)". Vizier Online Data Catalog. Bibcode:2015yCat.5145....0M.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ↑ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 3 4 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.
- ↑ "R Crv". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 June 2014.
- ↑ Garfinkle, Robert A. (1997), Star-Hopping: Your Visa to Viewing the Universe, Cambridge University Press, p. 108, ISBN 0-521-59889-3
- ↑ Cannon, Annie J. (1907). "Second catalogue of variable stars". Annals of Harvard College Observatory. 55: 1–94.
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