Misplaced Pages

Gamma Sculptoris

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Solitary orange-hued star in the constellation Sculptor
γ Sculptoris
Location of γ Sculptoris (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Sculptor
Right ascension 23 18 49.44076
Declination −32° 31′ 55.2890″
Apparent magnitude (V) 4.41
Characteristics
Spectral type K1 III
U−B color index +1.06
B−V color index +1.13
Astrometry
Radial velocity (Rv)+15.60 km/s
Proper motion (μ) RA: +20.13 mas/yr
Dec.: −77.72 mas/yr
Parallax (π)17.90 ± 0.19 mas
Distance182 ± 2 ly
(55.9 ± 0.6 pc)
Absolute magnitude (MV)0.67
Details
Mass1.60 M☉
Radius12 R☉
Luminosity72.41 L☉
Surface gravity (log g)2.45 cgs
Temperature4,578±24 K
Metallicity −0.06 dex
Rotational velocity (v sin i)1.7 km/s
Age2.47 Gyr
Other designations
γ Scl, CD−33° 16476, FK5 879, GC 32450, GJ 9821, HD 219784, HIP 115102, HR 8863, SAO 214444, GSC 07510-01089
Database references
SIMBADdata

Gamma Sculptoris, Latinized from γ Sculptoris, is a single, orange-hued star in the constellation Sculptor. Based upon an annual parallax shift of 17.90 mas as seen from Earth, this star is located about 182 light years from the Sun. It is bright enough to be visible to the naked eye with an apparent visual magnitude of 4.41. It is moving away from the Sun with a radial velocity of +15.6 km/s.

This is an evolved K-type giant star with a stellar classification of K1 III. At the age of 2.47 billion years it is a red clump star on the horizontal branch, which means it is generating energy through helium fusion at its core. The star has 1.60 times the mass of the Sun and it has expanded to 12 times the Sun's radius. It is radiating 72 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,578 K

References

  1. ^ Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600. Vizier catalog entry
  2. ^ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
  3. ^ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
  4. ^ Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
  5. ^ Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. ISBN 9780598216885. LCCN 54001336.
  6. ^ Liu, Y. J.; Zhao, G.; Shi, J. R.; Pietrzynski, G.; Gieren, W. (2007). "The abundances of nearby red clump giants". Monthly Notices of the Royal Astronomical Society. 382 (2): 553. Bibcode:2007MNRAS.382..553L. doi:10.1111/j.1365-2966.2007.11852.x.
  7. ^ Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. Vizier catalog entry
  8. ^ Luck, R. Earle (2015). "Abundances in the Local Region. I. G and K Giants". Astronomical Journal. 150 (3). 88. arXiv:1507.01466. Bibcode:2015AJ....150...88L. doi:10.1088/0004-6256/150/3/88. S2CID 118505114.Vizier catalog entry
  9. De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID 54046583. Vizier catalog entry
  10. "gam Scl". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-12-03.
  11. 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. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
Constellation of Sculptor
Stars
Bayer
Variable
HD
Other
Exoplanets
Star clusters
Galaxies
NGC
Other
Galaxy clusters
Astronomical events
Category
Categories:
Gamma Sculptoris Add topic