HD 34266

Last updated
HD 34266
Columba constellation map.svg
Red circle.svg
Location of HD 34266 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Columba [1]
Right ascension 05h 14m 28.84578s [2]
Declination −35° 58′ 37.1904″ [2]
Apparent magnitude  (V)5.73±0.01 [3]
Characteristics
Evolutionary stage Red giant branch [4]
Spectral type G8 III [5]
B−V color index +1.01 [6]
Astrometry
Radial velocity (Rv)13.2±2.9 [7] km/s
Proper motion (μ)RA: +11.005 mas/yr [2]
Dec.: +13.944 mas/yr [2]
Parallax (π)6.046±0.0316  mas [2]
Distance 539 ± 3  ly
(165.4 ± 0.9  pc)
Absolute magnitude  (MV)−0.16 [1]
Details [8]
Mass 3.42±0.14  M☉
Radius 16.2±0.4  R☉
Luminosity 144±4  L☉
Surface gravity (log g)2.68±0.12  cgs
Temperature 4,970±49  K
Metallicity [Fe/H]+0.04±0.04  dex
Rotational velocity (v sin i)2.3±1.2 [9]  km/s
Age 490 [10]   Myr
Other designations
6 G. Columbae [11] , CD−36°2127, CPD−36°676, GC 6421, HD 34266, HIP 24426, HR 1721, SAO 195683 [12]
Database references
SIMBAD data

HD 34266, also known as HR 1721 is a solitary, [13] yellow hued star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.73, [3] making it faintly visible to the naked eye under ideal conditions. Based on Gaia DR3 parallax measurements, the object is located 539 light years away. [2] It appears to be drifting away from the Solar System, having a heliocentric radial velocity of 13.2  km/s . [7]

This is an evolved giant star that is currently on the red giant branch, [4] fusing hydrogen in a shell around an inert helium core. It has a stellar classification of G8 III. [5] HD 34266 is calculated to be 490 million years old, [10] almost 10 times younger than the Sun. However, it already left the main sequence due to a mass of 3.42  M☉. [8] HD 34266 has expanded to 16.2 times the Sun's girth and now radiates 144 times the luminosity of the Sun from its photosphere at an effective temperature of 4,970  K . [8] HD 34266 has a near solar metallicity and spins modestly with a projected rotational velocity of 2.3  km/s . [9]

References

  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 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.
  3. 1 2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 –L30. Bibcode:2000A&A...355L..27H. ISSN   0004-6361.
  4. 1 2 Jones, M. I.; Jenkins, J. S.; Rojo, P.; Melo, C. H. F. (December 2011). "Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets: I. Sample definition and physical properties⋆⋆⋆". Astronomy & Astrophysics. 536: A71. arXiv: 1110.6459 . Bibcode:2011A&A...536A..71J. doi: 10.1051/0004-6361/201117887 . ISSN   0004-6361.
  5. 1 2 Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume III: Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
  6. ↑ Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  7. 1 2 Gontcharov, G. A. (November 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. eISSN   1562-6873. ISSN   1063-7737. S2CID   119231169.
  8. 1 2 3 Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (January 2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES): I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy & Astrophysics. 657: A87. arXiv: 2201.01528 . Bibcode:2022A&A...657A..87O. doi: 10.1051/0004-6361/202040078 . eISSN   1432-0746. ISSN   0004-6361.
  9. 1 2 De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi: 10.1051/0004-6361/201220762 . eISSN   1432-0746. ISSN   0004-6361.
  10. 1 2 Dotter, Aaron; Chaboyer, Brian; Jevremović, Darko; Kostov, Veselin; Baron, E.; Ferguson, Jason W. (September 2008). "The Dartmouth Stellar Evolution Database". The Astrophysical Journal Supplement Series. 178 (1): 89–101. arXiv: 0804.4473 . Bibcode:2008ApJS..178...89D. doi: 10.1086/589654 . eISSN   1538-4365. ISSN   0067-0049.
  11. ↑ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  12. ↑ "HR 1721". SIMBAD . Centre de données astronomiques de Strasbourg.
  13. ↑ Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv: 0806.2878 . Bibcode:2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x . eISSN   1365-2966. ISSN   0035-8711.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.