Kappa1 Sculptoris

In today's world, Kappa1 Sculptoris is a topic that generates a lot of interest and debate. From its origins to the present, Kappa1 Sculptoris has been the object of study and reflection by experts in different areas. Its impact on society, the economy, culture, and even politics, has been significant over time. In this article, we will explore different aspects related to Kappa1 Sculptoris, analyzing its relevance in the current context and its possible influence in the future. In addition, we will examine the various perspectives and opinions that exist around Kappa1 Sculptoris, with the aim of offering a broad and complete vision on this topic.

For other star systems with this Bayer designation, see κ Sculptoris.
Kappa1 Sculptoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Sculptor
Right ascension 00h 09m 21.06696s[1]
Declination −27° 59′ 16.5322″[1]
Apparent magnitude (V) +5.51 (6.23 + 6.29)[2]
Characteristics
Spectral type F2V[3] (F4 III + F3 III)[2]
U−B color index +0.06[4]
B−V color index +0.42[4]
Astrometry
Radial velocity (Rv)7.7±1.6[5] km/s
Proper motion (μ) RA: +70.11[1] mas/yr
Dec.: −8.97[1] mas/yr
Parallax (π)12.91±0.72 mas[1]
Distance250 ± 10 ly
(77 ± 4 pc)
Absolute magnitude (MV)2.05[6]
Orbit[7]
Period (P)616.04 yr
Semi-major axis (a)1.500″
Eccentricity (e)0.103
Inclination (i)98.98°
Longitude of the node (Ω)81.75°
Periastron epoch (T)2095.68
Argument of periastron (ω)
(secondary)		256.86°
Details
κ1 Scl A
Mass1.53[8] M☉
Luminosity31.3[9] L☉
Surface gravity (log g)3.94[8] cgs
Temperature6,697±228[8] K
Metallicity +0.05[10] dex
Rotational velocity (v sin i)116.8±5.8[6] km/s
Age2.0[8] Gyr
Other designations
κ1 Scl, CD−28° 16, HD 493, HIP 761, HR 24, SAO 166083, ADS 111, WDS J00094-2759AB[11]
Database references
SIMBADdata

Kappa1 Sculptoris is a binary star[2] system in the southern constellation of Sculptor. It is faintly visible to the naked eye, with a combined apparent visual magnitude of +5.51.[2] Based upon an annual parallax shift of 12.91 mas as measured from Earth,[1] it is located roughly 250 light years from the Sun.

The pair orbit each other with an estimated period of 616 years, a semimajor axis of 1.5 arc seconds, and an eccentricity of 0.1.[7] Both components are evolved, yellow-white hued, F-type giant stars. The primary, component A, has a visual magnitude of 6.23[2] and a stellar classification of F4 III.[2] The companion, component B, is magnitude 6.29[2] and of class F3 III.[2] Their composite spectrum is classified as F2V.[3] The mass ratio is 0.782, meaning the secondary is only 78.2% as massive as the primary.[12] An 18th magnitude companion star lies 73.4 arc seconds distant along a position angle of 243°, as of 1998.[13]

References

  1. ^ a b c d e f 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.
  2. ^ a b c d e f g h 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.
  3. ^ a b Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H.
  4. ^ a b Hurly, P. R. (1975), "Combined-light UBV Photometry of 103 Bright Southern Visual Doubles", Monthly Notes of the Astronomical Society of Southern Africa, 34: 7, Bibcode:1975MNSSA..34....7H.
  5. ^ 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, arXiv:1208.3048, Bibcode:2012A&A...546A..61D, doi:10.1051/0004-6361/201219219, S2CID 59451347, A61.
  6. ^ a b Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: A116, arXiv:1204.2459, Bibcode:2012A&A...542A.116A, doi:10.1051/0004-6361/201118724, S2CID 53666672.
  7. ^ a b Hartkopf, W. I.; et al., Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, archived from the original on 2011-05-17, retrieved 2017-06-02
  8. ^ a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
  9. ^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
  10. ^ Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey", Astronomy & Astrophysics, 530 (A138): 21, arXiv:1103.4651, Bibcode:2011A&A...530A.138C, doi:10.1051/0004-6361/201016276, S2CID 56118016.
  11. ^ "kap01 Scl -- Double or multiple star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2017-06-01.
  12. ^ Makarov, Valeri V.; Fabricius, Claus (2021). "Astrometric Mass Ratios of 248 Long-period Binary Stars Resolved in Hipparcos and Gaia EDR3". The Astronomical Journal. 162 (6): 260. arXiv:2109.11951. Bibcode:2021AJ....162..260M. doi:10.3847/1538-3881/ac2ee0. S2CID 237635330.
  13. ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22