RV Tauri

RV Tauri

A visual band light curve for RV Tauri, plotted from ASAS data[1]
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]
Distance4,700 ± 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
Mass0.53[4] M
Radius83.4±12.8[8] R
Luminosity2,800[4] L
Surface gravity (log g)0.6[4] cgs
Temperature4,810±200[4] (4,225-5,080[3]K
Metallicity−0.3±0.2[4]
B
Mass0.7±0.1[4] M
Other designations
RV Tauri, RV Tau, 2MASS J04470673+2610455, GSC 01835-01075, BD+25°732, HD 283868, TYC 1835-1075-1, GCRV 2803, AAVSO 0441+26, IRAS 04440+2605
Database references
SIMBADdata

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.

  1. ^ Cite error: The named reference ASASServer was invoked but never defined (see the help page).
  2. ^ 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.
  3. ^ 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.
  4. ^ 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.
  5. ^ 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.
  6. ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Washington: 0. Bibcode:1953GCRV..C......0W.
  7. ^ 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.
  8. ^ 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.