Astronomy:HD 127334

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Short description: Star in the constellation Boötes
HD 127334
Location of HD 127334 (circled)
Observation data
Equinox J2000.0]] (ICRS)
Constellation Boötes[1]
Right ascension  14h 29m 36.80877s[2]
Declination +41° 47′ 45.2854″[2]
Apparent magnitude (V) 6.36[3]
Characteristics
Spectral type G5V CH0.3[4]
B−V color index 1.010[3][5]
J−H color index 0.258[6]
J−K color index 0.369[6]
Astrometry
Radial velocity (Rv)−0.401±0.0007[7] km/s
Proper motion (μ) RA: 161.373[2] mas/yr
Dec.: −220.361[2] mas/yr
Parallax (π)42.7526 ± 0.0174[2] mas
Distance76.29 ± 0.03 ly
(23.390 ± 0.010 pc)
Absolute magnitude (MV)+4.48[1]
Details
Mass1.02±0.02,[8] 1.07[9] M☉
Radius1.2[10] R☉
Luminosity1.4[10] L☉
Surface gravity (log g)4.37±0.13[11] cgs
Temperature5758±76,[11] 5635±50[8] K
Metallicity [Fe/H]0.24±0.06,[11] 0.19±0.04[8] dex
Rotational velocity (v sin i)7.1[12] km/s
Age8.6±1.3,[8] 10.5–10.7,[13] ~7.1[12] Gyr
Other designations
BD+42°2508, Gaia DR2 1491593733326694912, GC 19550, GJ 3852, HD 127334, HIP 70873, HR 5423, SAO 45075, PPM 54166, TYC 3039-237-1, 2MASS J14293678+4147456[6]
Database references
SIMBADdata

HD 127334 is a solitary[9] 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,[4] 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).[14]

The star belongs to the thin disk population of the Milky Way[13] 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[15]). 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).[3]

HD 127334 has been a long-term target of the California Planet Search,[16] but no exoplanets have been discovered to orbit the star.[11]

See also

References

  1. ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 Rajpaul, V M et al. (2020-03-01). "A robust, template-free approach to precise radial velocity extraction". Monthly Notices of the Royal Astronomical Society 492 (3): 3960–3983. doi:10.1093/mnras/stz3599. ISSN 0035-8711. 
  4. ↑ 4.0 4.1 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. doi:10.1086/378365. ISSN 0004-6256. Bibcode: 2003AJ....126.2048G. 
  5. ↑ 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. 
  6. ↑ 6.0 6.1 6.2 "HD 127334". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+127334. 
  7. ↑ Soubiran, C. et al. (2018). "Gaia Data Release 2: The catalogue of radial velocity standard stars". Astronomy & Astrophysics 616: A7. doi:10.1051/0004-6361/201832795. ISSN 0004-6361. Bibcode: 2018A&A...616A...7S. 
  8. ↑ 8.0 8.1 8.2 8.3 Gonzalez, G. (2015-01-01). "Parent stars of extrasolar planets – XIV. Strong evidence of Li abundance deficit". Monthly Notices of the Royal Astronomical Society 446 (1): 1020–1025. doi:10.1093/mnras/stu2156. ISSN 1365-2966. 
  9. ↑ 9.0 9.1 Fuhrmann, K. et al. (2017-02-10). "Multiplicity among Solar-type Stars". The Astrophysical Journal 836 (1): 139. doi:10.3847/1538-4357/836/1/139. ISSN 0004-637X. Bibcode: 2017ApJ...836..139F. 
  10. ↑ 10.0 10.1 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S. 
  11. ↑ 11.0 11.1 11.2 11.3 Lienhard, F; Mortier, A; Buchhave, L; Collier Cameron, A; López-Morales, M; Sozzetti, A; Watson, C A; Cosentino, R (2022-05-26). "Multi-mask least-squares deconvolution: extracting RVs using tailored masks". Monthly Notices of the Royal Astronomical Society 513 (4): 5328–5343. doi:10.1093/mnras/stac1098. ISSN 0035-8711. 
  12. ↑ 12.0 12.1 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. doi:10.1051/0004-6361/202346744. ISSN 0004-6361. Bibcode: 2024A&A...684A..28L. 
  13. ↑ 13.0 13.1 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. doi:10.1051/0004-6361/201425088. ISSN 0004-6361. Bibcode: 2015A&A...576A.113Z. 
  14. ↑ Prša, Andrej; Harmanec, Petr; Torres, Guillermo et al. (2016-08-01). "NOMINAL VALUES FOR SELECTED SOLAR AND PLANETARY QUANTITIES: IAU 2015 RESOLUTION B3 * †". The Astronomical Journal 152 (2): 41. doi:10.3847/0004-6256/152/2/41. ISSN 0004-6256. 
  15. ↑ 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. doi:10.1038/NGEO941. Bibcode: 2010NatGe...3..637B. 
  16. ↑ 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. doi:10.1086/644604. ISSN 0004-6280. Bibcode: 2009PASP..121.1104J. 



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