Share to: share facebook share twitter share wa share telegram print page

HD 127334

HD 127334
Location of HD 127334 (circled)
Observation data
Epoch J2000.0[1]      Equinox J2000.0[1]
Constellation Boötes
Right ascension 14h 29m 36.80877s
Declination +41° 47′ 45.2854″
Apparent magnitude (V) 6.36[2]
Characteristics
Spectral type G5V CH0.3[3]
B−V color index 1.010[2][4]
J−H color index 0.258[5]
J−K color index 0.369[5]
Astrometry
Radial velocity (Rv)−0.401±0.0007[6] km/s
Proper motion (μ) RA: 161.373[1] mas/yr
Dec.: −220.361[1] mas/yr
Parallax (π)42.7526 ± 0.0174 mas[1]
Distance76.29 ± 0.03 ly
(23.390 ± 0.010 pc)
Details
Mass1.02±0.02,[7] 1.07[8] M☉
Surface gravity (log g)4.37±0.13[9] cgs
Temperature5758±76,[9] 5635±50[7] K
Metallicity [Fe/H]0.24±0.06,[9] 0.19±0.04[7] dex
Age8.6±1.3,[7] 10.5–10.7,[10] ~7.1[11] Gyr
Other designations
AG+42° 1283, BD+42° 2508, Gaia DR2 1491593733326694912, GC 19550, GJ 3852, HD 127334, HIP 70873, HR 5423, SAO 45075, PPM 54166, TIC 27525457, TYC 3039-237-1, 2MASS J14293678+4147456[5]
Database references
SIMBADdata

HD 127334 is a solitary[8] Sun-like star in the northern constellation of Boötes. With an apparent magnitude of 6.36, it can be faintly seen by the naked eye from Earth as a yellow-hued dot of light. As such, it is listed in the Bright Star Catalogue as HR 5423. It is located at a distance of 76.29 light-years (23.39 parsecs) according to Gaia EDR3 parallax measurements.

Stellar properties

This is a G-type main-sequence star much like the Sun, with a spectral type of G5V CH0.3,[3] where the suffix notation indicates an anomalous overabundance of the methylidyne radical. It is slightly more massive than the Sun but marginally cooler at 5,758 K (5,485 °C; 9,905 °F) or 5,635 K (5,362 °C; 9,683 °F). The Sun's effective temperature, for comparison, is 5,772 K (5,499 °C; 9,930 °F).[12]

The star belongs to the thin disk population of the Milky Way[10] and is thought to be ancient: its age estimate varies between publications, but generally lies between 7–11 Gyr, much older than the Solar System (aged 4.568 Gyr[13]). Despite its old age, it is enriched in heavy elements, possessing a super-solar metallicity of 0.24±0.06 or 0.19±0.04 dex.

It has a low or very low level of surface activity, unlike some other similar stars such as Toliman (Alpha Centauri B).[2]

HD 127334 has been a long-term target of the California Planet Search,[14] but no exoplanets have been discovered to orbit the star.[9]

See also

References

  1. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. ^ a b c Rajpaul, V M; et al. (1 March 2020). "A robust, template-free approach to precise radial velocity extraction". Monthly Notices of the Royal Astronomical Society. 492 (3): 3960–3983. arXiv:1912.09563. doi:10.1093/mnras/stz3599. ISSN 0035-8711.
  3. ^ a b Gray, R. O.; et al. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I." The Astronomical Journal. 126 (4): 2048–2059. arXiv:astro-ph/0308182. Bibcode:2003AJ....126.2048G. doi:10.1086/378365. ISSN 0004-6256.
  4. ^ Oja, T. (August 1991). "UBV photometry of stars whose positions are accurately known. VI". Astronomy & Astrophysics Supplement Series. 89: 415. Bibcode:1991A&AS...89..415O.
  5. ^ a b c "HD 127334". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 November 2024.
  6. ^ Soubiran, C.; et al. (2018). "Gaia Data Release 2: The catalogue of radial velocity standard stars". Astronomy & Astrophysics. 616: A7. arXiv:1804.09370. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. ISSN 0004-6361.
  7. ^ a b c d Gonzalez, G. (1 January 2015). "Parent stars of extrasolar planets – XIV. Strong evidence of Li abundance deficit". Monthly Notices of the Royal Astronomical Society. 446 (1): 1020–1025. arXiv:1410.4108. doi:10.1093/mnras/stu2156. ISSN 1365-2966.
  8. ^ a b Fuhrmann, K.; et al. (10 February 2017). "Multiplicity among Solar-type Stars". The Astrophysical Journal. 836 (1): 139. Bibcode:2017ApJ...836..139F. doi:10.3847/1538-4357/836/1/139. ISSN 0004-637X.
  9. ^ a b c d Lienhard, F; Mortier, A; Buchhave, L; Collier Cameron, A; López-Morales, M; Sozzetti, A; Watson, C A; Cosentino, R (26 May 2022). "Multi-mask least-squares deconvolution: extracting RVs using tailored masks". Monthly Notices of the Royal Astronomical Society. 513 (4): 5328–5343. arXiv:2204.13556. doi:10.1093/mnras/stac1098. ISSN 0035-8711.
  10. ^ a b Ženovienė, R.; Tautvaišienė, G.; Nordström, B.; Stonkutė, E.; Barisevičius, G. (2015). "Stellar substructures in the solar neighbourhood: IV. Kinematic Group 1 in the Geneva-Copenhagen survey". Astronomy & Astrophysics. 576: A113. arXiv:1501.06401. Bibcode:2015A&A...576A.113Z. doi:10.1051/0004-6361/201425088. ISSN 0004-6361.
  11. ^ de Andrés, F. Llorente; de la Reza, R.; Cruz, P.; Cuenda-Muñoz, D.; Alfaro, E. J.; Chavero, C.; Cifuentes, C. (2024). "The evolution of lithium in FGK dwarf stars: Influence of planets and Galactic migration". Astronomy & Astrophysics. 684: A28. arXiv:2402.01315. Bibcode:2024A&A...684A..28L. doi:10.1051/0004-6361/202346744. ISSN 0004-6361.
  12. ^ Prša, Andrej; Harmanec, Petr; Torres, Guillermo; et al. (1 August 2016). "NOMINAL VALUES FOR SELECTED SOLAR AND PLANETARY QUANTITIES: IAU 2015 RESOLUTION B3 * †". The Astronomical Journal. 152 (2): 41. arXiv:1510.07674. doi:10.3847/0004-6256/152/2/41. ISSN 0004-6256.
  13. ^ Bouvier, A.; Wadhwa, M. (2010). "The age of the Solar System redefined by the oldest Pb–Pb age of a meteoritic inclusion". Nature Geoscience. 3 (9): 637–641. Bibcode:2010NatGe...3..637B. doi:10.1038/NGEO941. S2CID 56092512.
  14. ^ Johnson, John Asher; Winn, Joshua N.; Albrecht, Simon; Howard, Andrew W.; Marcy, Geoffrey W.; Gazak, J. Zachary (2009). "A Third Exoplanetary System with Misaligned Orbital and Stellar Spin Axes". Publications of the Astronomical Society of the Pacific. 121 (884): 1104–1111. arXiv:0907.5204. Bibcode:2009PASP..121.1104J. doi:10.1086/644604. ISSN 0004-6280.
Kembali kehalaman sebelumnya