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HD 34266
Location of HD 34266 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Columba
Right ascension 05h 14m 28.84578s [1]
Declination −35° 58′ 37.1904″ [1]
Apparent magnitude (V) 5.73±0.01 [2]
Characteristics
Evolutionary stage Red giant branch [3]
Spectral type G8 III [4]
B−V color index +1.01 [5]
Astrometry
Radial velocity (Rv)13.2±2.9 [6] km/s
Proper motion (μ) RA: +11.005  mas/ yr [1]
Dec.: +13.944  mas/ yr [1]
Parallax (π)6.046 ± 0.0316  mas [1]
Distance539 ± 3  ly
(165.4 ± 0.9  pc)
Absolute magnitude (MV)−0.16 [7]
Details [8]
Mass3.42±0.14  M☉
Radius16.2±0.4  R☉
Luminosity144±4  L☉
Surface gravity (log g)2.68±0.12  cgs
Temperature4,970±49  K
Metallicity [Fe/H]+0.04±0.04  dex
Rotational velocity (v sin i)2.3±1.2 [9] km/s
Age490 [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, [2] 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. [1] It appears to be drifting away from the Solar System, having a heliocentric radial velocity of 13.2  km/s. [6]

This is an evolved giant star that is currently on the red giant branch, [3] fusing hydrogen in a shell around an inert helium core. It has a stellar classification of G8 III. [4] 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. ^ a b c d e 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.
  2. ^ a b 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.
  3. ^ a b 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.
  4. ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume III: Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
  5. ^ 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.
  6. ^ a b 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.
  7. ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN  1562-6873. ISSN  1063-7737. S2CID  119257644.
  8. ^ a b c 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. ^ a b 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. ^ a b 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.
Retrieved from " https://en.wikipedia.org/?title=HD_34266&oldid=1135229438"
From Wikipedia, the free encyclopedia
HD 34266
Location of HD 34266 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Columba
Right ascension 05h 14m 28.84578s [1]
Declination −35° 58′ 37.1904″ [1]
Apparent magnitude (V) 5.73±0.01 [2]
Characteristics
Evolutionary stage Red giant branch [3]
Spectral type G8 III [4]
B−V color index +1.01 [5]
Astrometry
Radial velocity (Rv)13.2±2.9 [6] km/s
Proper motion (μ) RA: +11.005  mas/ yr [1]
Dec.: +13.944  mas/ yr [1]
Parallax (π)6.046 ± 0.0316  mas [1]
Distance539 ± 3  ly
(165.4 ± 0.9  pc)
Absolute magnitude (MV)−0.16 [7]
Details [8]
Mass3.42±0.14  M☉
Radius16.2±0.4  R☉
Luminosity144±4  L☉
Surface gravity (log g)2.68±0.12  cgs
Temperature4,970±49  K
Metallicity [Fe/H]+0.04±0.04  dex
Rotational velocity (v sin i)2.3±1.2 [9] km/s
Age490 [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, [2] 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. [1] It appears to be drifting away from the Solar System, having a heliocentric radial velocity of 13.2  km/s. [6]

This is an evolved giant star that is currently on the red giant branch, [3] fusing hydrogen in a shell around an inert helium core. It has a stellar classification of G8 III. [4] 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. ^ a b c d e 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.
  2. ^ a b 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.
  3. ^ a b 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.
  4. ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume III: Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
  5. ^ 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.
  6. ^ a b 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.
  7. ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN  1562-6873. ISSN  1063-7737. S2CID  119257644.
  8. ^ a b c 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. ^ a b 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. ^ a b 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.
Retrieved from " https://en.wikipedia.org/?title=HD_34266&oldid=1135229438"

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