| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 47m 6.7281s[2] |
| Declination | 26° 10′ 45.613″[2] |
| Apparent magnitude (V) | 9.0–10.6[3] |
| Characteristics | |
| Evolutionary stage | Post-AGB[4] |
| Spectral type | G2eIa-M2Ia[5] |
| U−B color index | 0.9-1.8[3] |
| B−V color index | 1.5-1.9[3] |
| Variable type | RVb[4] |
| Astrometry | |
| Radial velocity (Rv) | 32[6] km/s |
| Proper motion (μ) | RA: 1.557[7] mas/yr Dec.: −4.717[7] mas/yr |
| Parallax (π) | 0.6926 ± 0.0605 mas[7] |
| Distance | 4,700 ± 400 ly (1,400 ± 100 pc) |
| Absolute magnitude (MV) | −3.359[8] |
| Orbit[4] | |
| Period (P) | 1,198±17 d |
| Semi-major axis (a) | 1.5 AU |
| Eccentricity (e) | 0.5±0.1 |
| Inclination (i) | 71±8° |
| Semi-amplitude (K1) (primary) | 14.5±1.6 km/s |
| Details | |
| A | |
| Mass | 0.53[4] M☉ |
| Radius | 83.4±12.8[8] R☉ |
| Luminosity | 2,800[4] L☉ |
| Surface gravity (log g) | 0.6[4] cgs |
| Temperature | 4,810±200[4] (4,225-5,080[3]) K |
| Metallicity | −0.3±0.2[4] |
| B | |
| Mass | 0.7±0.1[4] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
RV Tauri (RV Tau) is a star in the constellation Taurus. It is a yellow supergiant and is the prototype of a class of pulsating variables known as RV Tauri variables. It is a post-AGB star and a spectroscopic binary about 4,700 light years away.
- ^ Cite error: The named reference
ASASServerwas invoked but never defined (see the help page). - ^ a b Hog, E.; Kuzmin, A.; Bastian, U.; Fabricius, C.; Kuimov, K.; Lindegren, L.; Makarov, V. V.; Roeser, S. (1998). "The TYCHO Reference Catalogue". Astronomy and Astrophysics. 335: L65. Bibcode:1998A&A...335L..65H.
- ^ a b c d Dawson, D. W. (1979). "A photometric investigation of RV Tauri and yellow semiregular variables". Astrophysical Journal Supplement Series. 41: 97. Bibcode:1979ApJS...41...97D. doi:10.1086/190610.
- ^ a b c d e f g h i Manick, Rajeev; Kamath, Devika; Van Winckel, Hans; Jorissen, Alain; Sekaran, Sanjay; Bowman, Dominic M.; Oomen, Glenn-Michael; Kluska, Jacques; Bollen, Dylan; Waelkens, Christoffel (2019). "Spectroscopic binaries RV Tauri and DF Cygni". Astronomy & Astrophysics. 628: A40. arXiv:1906.10492. Bibcode:2019A&A...628A..40M. doi:10.1051/0004-6361/201834956. S2CID 195584310.
- ^ Taranova, O. G.; Shenavrin, V. I.; Tatarnikov, A. M. (2009). "Infrared photometry for two RV Tau stars and V1027 Cyg". Astronomy Letters. 35 (7): 472. Bibcode:2009AstL...35..472T. doi:10.1134/S1063773709070044. S2CID 120327422.
- ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington: 0. Bibcode:1953GCRV..C......0W.
- ^ a b c 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.
- ^ a b Bódi, A.; Kiss, L. L. (2019). "Physical properties of galactic RV Tauri stars from Gaia DR2 data". The Astrophysical Journal. 872 (1): 60. arXiv:1901.01409. Bibcode:2019ApJ...872...60B. doi:10.3847/1538-4357/aafc24. S2CID 119099605.