Kappa Pavonis

Kappa Pavonis
Location of κ Pav (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Pavo
Right ascension 18h 56m 57.02788s[1]
Declination −67° 14′ 00.5831″[1]
Apparent magnitude (V) 4.35[2] (3.91 - 4.78[3])
Characteristics
Spectral type F5-G5 I-II[3]
B−V color index +0.63[2]
Variable type W Vir[3]
Astrometry
Radial velocity (Rv)37.80[4] km/s
Proper motion (μ) RA: −8.46[1] mas/yr
Dec.: 16.47[1] mas/yr
Parallax (π)5.57 ± 0.28 mas[5]
Distance590 ± 30 ly
(180 ± 9 pc)
Absolute magnitude (MV)−1.99[5]
Details
Radius19 - 25[6] R☉
Luminosity565[7] L☉
Temperature5,250 - 6,350[6] K
Metallicity [Fe/H]−0.5[7] dex
Other designations
CD−67°2287, HD 174694, HIP 93015, HR 7107, SAO 254413, AAVSO 1846-67
Database references
SIMBADdata

Kappa Pavonis (κ Pav) is a variable star in the constellation Pavo. It is the brightest W Virginis variable in the sky.

  1. ^ a b c d Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.
  2. ^ a b Feast, Michael W.; Laney, Clifton D.; Kinman, Thomas D.; Van Leeuwen, Floor; Whitelock, Patricia A. (2008). "The luminosities and distance scales of type II Cepheid and RR Lyrae variables". Monthly Notices of the Royal Astronomical Society. 386 (4): 2115. arXiv:0803.0466. Bibcode:2008MNRAS.386.2115F. doi:10.1111/j.1365-2966.2008.13181.x. S2CID 14459638.
  3. ^ a b c 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. Bibcode:2009yCat....102025S.
  4. ^ 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.
  5. ^ a b Benedict, G. Fritz; McArthur, Barbara E.; Feast, Michael W.; Barnes, Thomas G.; Harrison, Thomas E.; Bean, Jacob L.; Menzies, John W.; Chaboyer, Brian; Fossati, Luca; Nesvacil, Nicole; Smith, Horace A.; Kolenberg, Katrien; Laney, C. D.; Kochukhov, Oleg; Nelan, Edmund P.; Shulyak, D. V.; Taylor, Denise; Freedman, Wendy L. (2011). "Distance Scale Zero Points from Galactic RR Lyrae Star Parallaxes". The Astronomical Journal. 142 (6): 187. arXiv:1109.5631. Bibcode:2011AJ....142..187B. doi:10.1088/0004-6256/142/6/187. S2CID 16184447.
  6. ^ a b Breitfelder, J.; Kervella, P.; Mérand, A.; Gallenne, A.; Szabados, L.; Anderson, R. I.; Willson, M.; Le Bouquin, J.-B. (2015). "Observational calibration of the projection factor of Cepheids. I. The type II Cepheid κ Pavonis". Astronomy & Astrophysics. 576: A64. arXiv:1503.05176. Bibcode:2015A&A...576A..64B. doi:10.1051/0004-6361/201425171. S2CID 119191833.
  7. ^ a b Balog, Z.; Vinko, J.; Kaszas, G. (1997). "Baade-Wesselink Radius Determination of Type II Cepheids". Astronomical Journal. 113: 1833. Bibcode:1997AJ....113.1833B. doi:10.1086/118394.