Astronomy:Zeta Pictoris
From HandWiki
Short description: Star in the constellation Pictor
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Pictor |
| Right ascension | 05h 19 22.13548m[1] |
| Declination | −50° 36′ 21.4820″[1] |
| Apparent magnitude (V) | +5.43[2] |
| Characteristics | |
| Spectral type | F6 IV[3] |
| U−B color index | +0.01[2] |
| B−V color index | +0.52[2] |
| Astrometry | |
| Radial velocity (Rv) | +43.8±0.2[4] km/s |
| Proper motion (μ) | RA: +23.64[1] mas/yr Dec.: +227.43[1] mas/yr |
| Parallax (π) | 28.00 ± 0.23[1] mas |
| Distance | 116.5 ± 1.0 ly (35.7 ± 0.3 pc) |
| Absolute magnitude (MV) | 2.65±0.04[5] |
| Details[6] | |
| Mass | 1.39 M☉ |
| Radius | 5.3[7] R☉ |
| Surface gravity (log g) | 4.07±0.07 cgs |
| Temperature | 6,411±56 K |
| Metallicity [Fe/H] | 0.07 dex |
| Rotational velocity (v sin i) | 5.6±1.0[8] km/s |
| Age | 2.6 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
ζ Pictoris, Latinised as Zeta Pictoris, is a solitary[10] star in the southern constellation of Pictor. It is visible to the naked eye with an apparent visual magnitude of +5.43.[2] Based upon an annual parallax shift of 28.00 mas as seen from the Earth,[1] the system is located 116.5 light years from the Sun.
This is an evolving F-type subgiant star with a stellar classification of F6 IV.[3] It is a thin disk[11] star with an estimated 1.4[6] times the mass of the Sun and about 5.3[7] times the Sun's radius. At the age of 2.6[6] billion years, Zeta Pictoris is spinning with a projected rotational velocity of 5.6 km/s.[8]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 Przybylski, A.; Kennedy, P. M. (1965), "Radial velocities and three-colour photometry of 166 southern stars", Monthly Notices of the Royal Astronomical Society 131: 95–104, doi:10.1093/mnras/131.1.95, Bibcode: 1965MNRAS.131...95P.
- ↑ 3.0 3.1 Gray, R. O. et al. (2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal 132 (1): 161–70, doi:10.1086/504637, Bibcode: 2006AJ....132..161G.
- ↑ De Bruijne, J. H. J.; Eilers, A.-C. (2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics 546: A61, doi:10.1051/0004-6361/201219219, Bibcode: 2012A&A...546A..61D.
- ↑ Soubiran, C.; Girard, P. (July 2005), "Abundance trends in kinematical groups of the Milky Way's disk", Astronomy and Astrophysics 438 (1): 1391–51, doi:10.1051/0004-6361:20042390, Bibcode: 2005A&A...438..139S.
- ↑ 6.0 6.1 6.2 Bensby, T. et al. (2014), "Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the solar neighbourhood", Astronomy & Astrophysics 562 (A71): 28, doi:10.1051/0004-6361/201322631, Bibcode: 2014A&A...562A..71B.
- ↑ 7.0 7.1 Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics 367: 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P.
- ↑ 8.0 8.1 De Medeiros, J. R.; Mayor, M. (1999), "A catalog of rotational and radial velocities for evolved stars", Astronomy and Astrophysics Supplement Series 139 (3): 433, doi:10.1051/aas:1999401, Bibcode: 1999A&AS..139..433D.
- ↑ "zet Pic". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=zet+Pic.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ "The origin and chemical evolution of carbon in the Galactic thin and thick discs*", Monthly Notices of the Royal Astronomical Society 367 (3): 1181–1193, April 2006, doi:10.1111/j.1365-2966.2006.10037.x, Bibcode: 2006MNRAS.367.1181B, https://deepblue.lib.umich.edu/bitstream/2027.42/74854/1/j.1365-2966.2006.10037.x.pdf
 |  |
