Astronomy:HD 129357
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Short description: G-type star in the constellation Boötes
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | 14h 41m 22.401s[2] |
| Declination | +29° 03′ 31.70″[2] |
| Apparent magnitude (V) | 7.823[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | G2V[1] |
| U−B color index | +0.115[4] |
| B−V color index | +0.635[4] |
| Astrometry | |
| Radial velocity (Rv) | −33.2[3] km/s |
| Proper motion (μ) | RA: +12.418[2] mas/yr Dec.: −159.824[2] mas/yr |
| Parallax (π) | 21.0587 ± 0.0264[2] mas |
| Distance | 154.9 ± 0.2 ly (47.49 ± 0.06 pc) |
| Absolute magnitude (MV) | +4.49[1] |
| Details | |
| Mass | 1.00±0.06[5] M☉ |
| Radius | 1.3[2] R☉ |
| Luminosity | 1.5[2] L☉ |
| Surface gravity (log g) | 4.16±0.13[5] cgs |
| Temperature | 5,749±47[5] K |
| Metallicity [Fe/H] | −0.02±0.04[5] dex |
| Rotational velocity (v sin i) | 2[6] km/s |
| Age | 8.1[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 129357 is a G-type main-sequence star in the constellation Boötes that is located about 154 light years from the Sun. The measured properties of this star are very similar to those of the Sun, making it a candidate solar twin. However, it has a lower abundance of lithium than the Sun and appears to be over 3 billion years older, so it may instead be a solar analog.[8][6]
It was suggested by astronomer Olin Eggen that HD 129357 is a member of the Wolf 630 moving group of stars that share a common motion through space. The space velocity components of HD 129357 are (U, V, W) = (+21.3, −36.3, −32.0).[5]
References
- ↑ 1.0 1.1 1.2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 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.
- ↑ 3.0 3.1 3.2 Nortdstrom, R. (2004). "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs". Astronomy and Astrophysics 418: 989–1019. doi:10.1051/0004-6361:20035959. Bibcode: 2004A&A...418..989N.
- ↑ 4.0 4.1 Mermilliod, J. -C. (1987). "UBV Photoelectric Photometry Catalogue (1986): I. The Original data". Astronomy and Astrophysics Supplement Series 71: 413. Bibcode: 1987A&AS...71..413M.
- ↑ 5.0 5.1 5.2 5.3 5.4 King, Jeremy R.; Boesgaard, Ann M.; Schuler, Simon C. (November 2005). "Keck HIRES Spectroscopy of Four Candidate Solar Twins". The Astronomical Journal 130 (5): 2318–2325. doi:10.1086/452640. Bibcode: 2005AJ....130.2318K.
- ↑ 6.0 6.1 Lubin, Dan; Holden, Bradford P.; Stock, Camille; Melis, Carl; Tytler, David (2024). "Hamilton Echelle Spectrograph Observations of Solar Analog Field Stars: Lithium Abundance and Activity". The Astronomical Journal 168 (6): 240. doi:10.3847/1538-3881/ad823d. Bibcode: 2024AJ....168..240L.
- ↑ "HD 129357". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+129357.
- ↑ King, Jeremy R.; Boesgaard, Ann M.; Schuler, Simon C. (2005). "Keck HIRES Spectroscopy of Four Candidate Solar Twins". The Astronomical Journal 130 (5): 2318. doi:10.1086/452640. Bibcode: 2005AJ....130.2318K.
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