Star in the constellation Boötes
Location of HD 127334 (circled) | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Boötes |
| Right ascension | 14 29 36.80877 |
| Declination | +41° 47′ 45.2854″ |
| Apparent magnitude (V) | 6.36 |
| Characteristics | |
| Spectral type | G5V CH0.3 |
| B−V color index | 1.010 |
| J−H color index | 0.258 |
| J−K color index | 0.369 |
| Astrometry | |
| Radial velocity (Rv) | −0.401±0.0007 km/s |
| Proper motion (μ) | RA: 161.373 mas/yr Dec.: −220.361 mas/yr |
| Parallax (π) | 42.7526 ± 0.0174 mas |
| Distance | 76.29 ± 0.03 ly (23.390 ± 0.010 pc) |
| Details | |
| Mass | 1.02±0.02, 1.07 M☉ |
| Surface gravity (log g) | 4.37±0.13 cgs |
| Temperature | 5758±76, 5635±50 K |
| Metallicity | 0.24±0.06, 0.19±0.04 dex |
| Age | 8.6±1.3, 10.5–10.7, ~7.1 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 | |
| Database references | |
| SIMBAD | data |
HD 127334 is a solitary 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, 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).
The star belongs to the thin disk population of the Milky Way 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). 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).
HD 127334 has been a long-term target of the California Planet Search, but no exoplanets have been discovered to orbit the star.
See also
References
- ^ 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.
- ^ 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.
- ^ 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.
- 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.
- ^ "HD 127334". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 November 2024.
- 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.
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.
- 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.
- 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.
- 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.
- 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.
