Astronomy:Xi Sculptoris

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Short description: Star in the constellation Sculptor
Xi Sculptoris
Observation data
Equinox J2000.0]] (ICRS)
Constellation Sculptor[1]
Right ascension  01h 01m 18.27548s[2]
Declination −38° 54′ 59.5033″[2]
Apparent magnitude (V) 5.59[1]
Characteristics
Spectral type K1 III[3]
B−V color index +1.185±0.008[1]
Astrometry
Radial velocity (Rv)−31.1±2.9[4] km/s
Proper motion (μ) RA: +66.892[2] mas/yr
Dec.: +49.891[2] mas/yr
Parallax (π)6.6662 ± 0.0829[2] mas
Distance489 ± 6 ly
(150 ± 2 pc)
Absolute magnitude (MV)−0.39[1]
Details
Mass2.9[5] M☉
Radius22.29+1.18
−1.74[2] R☉
Luminosity198[5] L☉
Surface gravity (log g)2.12[5] cgs
Temperature4,403[5] K
Metallicity [Fe/H]−0.48[6] dex
Rotational velocity (v sin i)<1.0[7] km/s
Other designations
ξ Scl, CD−39°260, HD 6055, HIP 4770, HR 288, SAO 192870[8]
Database references
SIMBADdata

Xi Sculptoris, Latinized from ξ Sculptoris, is a solitary[9] orange-hued star in the southern constellation of Sculptor, near the southern constellation boundary with Phoenix. It is just visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.59.[1] The distance to Xi Sculptoris is approximately 489 light years based on parallax, while it is drifting closer with a radial velocity of −31 km/s.[4] It has an absolute magnitude of −0.39.[1]

This object is an aging giant star with a stellar classification of K1 III,[3] which indicates it has exhausted the supply of hydrogen at its core then expanded and cooled off the main sequence. At present it has 22[2] times the girth of the Sun. It is radiating 182 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,489 K.[2]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A  XHIP record for this object at VizieR.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G.  Gaia DR2 record for this source at VizieR.
  3. ↑ 3.0 3.1 Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1982mcts.book.....H. 
  4. ↑ 4.0 4.1 de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics 546: 14, doi:10.1051/0004-6361/201219219, A61, Bibcode: 2012A&A...546A..61D. 
  5. ↑ 5.0 5.1 5.2 5.3 Fouesneau, M.; Andrae, R.; Dharmawardena, T.; Rybizki, J.; Bailer-Jones, C. A. L.; Demleitner, M. (2022). "Astrophysical parameters from Gaia DR2, 2MASS, and AllWISE". Astronomy and Astrophysics 662: A125. doi:10.1051/0004-6361/202141828. Bibcode: 2022A&A...662A.125F. 
  6. ↑ Ye, Xianhao; Wu, Wenbo; Allende Prieto, Carlos; Aguado, David S.; Zhao, Jingkun; González Hernández, Jonay I.; Rebolo, Rafael; Zhao, Gang et al. (2025). "Mapping the Milky Way with Gaia Bp/Rp spectra: I. Systematic flux corrections and atmospheric parameters for 68 million stars". Astronomy and Astrophysics 695. doi:10.1051/0004-6361/202452871. Bibcode: 2025A&A...695A..75Y. 
  7. ↑ 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. V. Southern stars". Astronomy and Astrophysics 561: A126. doi:10.1051/0004-6361/201220762. Bibcode: 2014A&A...561A.126D. 
  8. ↑ "ksi Scl". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=ksi+Scl. 
  9. ↑ 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. 



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