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HD 186302
Location of HD 186302 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Pavo
Right ascension 19h 49m 06.43036s [1]
Declination −70° 11′ 16.7033″ [1]
Apparent magnitude (V) 8.76±0.01 [2]
Characteristics
Spectral type G3/5 V [3]
B−V color index 0.67 [4]
Astrometry
Radial velocity (Rv)−1.3±0.3 [5] km/s
Proper motion (μ) RA: −24.004 [1]  mas/ yr
Dec.: −38.804 [1]  mas/ yr
Parallax (π)17.6309 ± 0.0147  mas [1]
Distance185.0 ± 0.2  ly
(56.72 ± 0.05  pc)
Absolute magnitude (MV)+5.11 [6]
Details [7]
Mass0.97±0.01  M☉
Radius0.95±0.01  R☉
Surface gravity (log g)4.47±0.01  cgs
Temperature5,675±15  K
Metallicity [Fe/H]−0.03 [8]  dex
Rotational velocity (v sin i)2.30 [8] km/s
Age4.5±0.81  Gyr
Other designations
HD 186302, HIP 97507, 2MASS J19490644-7011167, CD−70°1724
Database references
SIMBAD data

HD 186302 (also designated HIP 97507) [9] is a star in the constellation of Pavo. It is 185 light-years (57 parsecs) away from Earth, with an apparent magnitude of 8.76. [9] It was identified in November 2018 as a potential solar sibling to the Sun. Similar by spectrum and size, it was suspected to have formed in the same stellar nursery as the Sun 4.6 billion years ago. [10] Common origin with Sun was found to be unlikely in a 2019 paper, as HD 186302's galactic orbit is very different from Sun's. [11]

See also

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. ^ 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. ^ Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53°. Bibcode: 1975mcts.book.....H.
  4. ^ Gomes Da Silva, J.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Campante, T. L.; Figueira, P.; Bossini, D.; Delgado-Mena, E.; Monteiro, M. J. P. F. G.; De Laverny, P.; Recio-Blanco, A.; Lovis, C. (2021). "Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample. I. A catalogue of homogeneous chromospheric activity". Astronomy and Astrophysics. 646: A77. arXiv: 2012.10199. Bibcode: 2021A&A...646A..77G. doi: 10.1051/0004-6361/202039765. S2CID  242898977.
  5. ^ 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.
  6. ^ 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.
  7. ^ Adibekyan, V.; De Laverny, P.; Recio-Blanco, A.; Sousa, S. G.; Delgado-Mena, E.; Kordopatis, G.; Ferreira, A. C. S.; Santos, N. C.; Hakobyan, A. A.; Tsantaki, M. (2018). "The AMBRE project: Searching for the closest solar siblings". Astronomy and Astrophysics. 619: A130. arXiv: 1810.01813. Bibcode: 2018A&A...619A.130A. doi: 10.1051/0004-6361/201834285. S2CID  119202092.
  8. ^ a b Llorente de Andrés, F.; Chavero, C.; de la Reza, R.; Roca-Fàbrega, S.; Cifuentes, C. (October 2021). "The evolution of lithium in FGK dwarf stars". Astronomy & Astrophysics. 654: A137. arXiv: 2108.05852. Bibcode: 2021A&A...654A.137L. doi: 10.1051/0004-6361/202141339. eISSN  1432-0746. ISSN  0004-6361.
  9. ^ a b "HD 186302". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 24, 2018.
  10. ^ Matt Williams (2018-11-21). "Astronomers Find One of the Sun's Sibling Stars. Born From the Same Solar Nebula Billions of Years Ago". Universe Today. Retrieved 2022-10-07.
  11. ^ Leung, Henry W.; MacKereth, J Ted; Hunt, Jason A S.; Portegies Zwart, Simon; Bovy, Jo; Price-Jones, Natalie; Webb, Jeremy J. (2020). "Searching for solar siblings in APOGEE and Gaia DR2 with N-body simulations". Monthly Notices of the Royal Astronomical Society. 494 (2): 2268–2279. arXiv: 1910.01646. Bibcode: 2020MNRAS.494.2268W. doi: 10.1093/mnras/staa788.
  12. ^ Batista, S. F. A.; Adibekyan, V. Zh.; Sousa, S. G.; Santos, N. C.; Delgado Mena, E.; Hakobyan, A. A. (2014), "Searching for solar siblings among the HARPS data", Astronomy & Astrophysics, 564: A43, arXiv: 1403.1506, Bibcode: 2014A&A...564A..43B, doi: 10.1051/0004-6361/201423645, S2CID  56197806
Retrieved from " https://en.wikipedia.org/?title=HD_186302&oldid=1161988416"
From Wikipedia, the free encyclopedia
HD 186302
Location of HD 186302 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Pavo
Right ascension 19h 49m 06.43036s [1]
Declination −70° 11′ 16.7033″ [1]
Apparent magnitude (V) 8.76±0.01 [2]
Characteristics
Spectral type G3/5 V [3]
B−V color index 0.67 [4]
Astrometry
Radial velocity (Rv)−1.3±0.3 [5] km/s
Proper motion (μ) RA: −24.004 [1]  mas/ yr
Dec.: −38.804 [1]  mas/ yr
Parallax (π)17.6309 ± 0.0147  mas [1]
Distance185.0 ± 0.2  ly
(56.72 ± 0.05  pc)
Absolute magnitude (MV)+5.11 [6]
Details [7]
Mass0.97±0.01  M☉
Radius0.95±0.01  R☉
Surface gravity (log g)4.47±0.01  cgs
Temperature5,675±15  K
Metallicity [Fe/H]−0.03 [8]  dex
Rotational velocity (v sin i)2.30 [8] km/s
Age4.5±0.81  Gyr
Other designations
HD 186302, HIP 97507, 2MASS J19490644-7011167, CD−70°1724
Database references
SIMBAD data

HD 186302 (also designated HIP 97507) [9] is a star in the constellation of Pavo. It is 185 light-years (57 parsecs) away from Earth, with an apparent magnitude of 8.76. [9] It was identified in November 2018 as a potential solar sibling to the Sun. Similar by spectrum and size, it was suspected to have formed in the same stellar nursery as the Sun 4.6 billion years ago. [10] Common origin with Sun was found to be unlikely in a 2019 paper, as HD 186302's galactic orbit is very different from Sun's. [11]

See also

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. ^ 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. ^ Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53°. Bibcode: 1975mcts.book.....H.
  4. ^ Gomes Da Silva, J.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Campante, T. L.; Figueira, P.; Bossini, D.; Delgado-Mena, E.; Monteiro, M. J. P. F. G.; De Laverny, P.; Recio-Blanco, A.; Lovis, C. (2021). "Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample. I. A catalogue of homogeneous chromospheric activity". Astronomy and Astrophysics. 646: A77. arXiv: 2012.10199. Bibcode: 2021A&A...646A..77G. doi: 10.1051/0004-6361/202039765. S2CID  242898977.
  5. ^ 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.
  6. ^ 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.
  7. ^ Adibekyan, V.; De Laverny, P.; Recio-Blanco, A.; Sousa, S. G.; Delgado-Mena, E.; Kordopatis, G.; Ferreira, A. C. S.; Santos, N. C.; Hakobyan, A. A.; Tsantaki, M. (2018). "The AMBRE project: Searching for the closest solar siblings". Astronomy and Astrophysics. 619: A130. arXiv: 1810.01813. Bibcode: 2018A&A...619A.130A. doi: 10.1051/0004-6361/201834285. S2CID  119202092.
  8. ^ a b Llorente de Andrés, F.; Chavero, C.; de la Reza, R.; Roca-Fàbrega, S.; Cifuentes, C. (October 2021). "The evolution of lithium in FGK dwarf stars". Astronomy & Astrophysics. 654: A137. arXiv: 2108.05852. Bibcode: 2021A&A...654A.137L. doi: 10.1051/0004-6361/202141339. eISSN  1432-0746. ISSN  0004-6361.
  9. ^ a b "HD 186302". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved November 24, 2018.
  10. ^ Matt Williams (2018-11-21). "Astronomers Find One of the Sun's Sibling Stars. Born From the Same Solar Nebula Billions of Years Ago". Universe Today. Retrieved 2022-10-07.
  11. ^ Leung, Henry W.; MacKereth, J Ted; Hunt, Jason A S.; Portegies Zwart, Simon; Bovy, Jo; Price-Jones, Natalie; Webb, Jeremy J. (2020). "Searching for solar siblings in APOGEE and Gaia DR2 with N-body simulations". Monthly Notices of the Royal Astronomical Society. 494 (2): 2268–2279. arXiv: 1910.01646. Bibcode: 2020MNRAS.494.2268W. doi: 10.1093/mnras/staa788.
  12. ^ Batista, S. F. A.; Adibekyan, V. Zh.; Sousa, S. G.; Santos, N. C.; Delgado Mena, E.; Hakobyan, A. A. (2014), "Searching for solar siblings among the HARPS data", Astronomy & Astrophysics, 564: A43, arXiv: 1403.1506, Bibcode: 2014A&A...564A..43B, doi: 10.1051/0004-6361/201423645, S2CID  56197806
Retrieved from " https://en.wikipedia.org/?title=HD_186302&oldid=1161988416"

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