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Kappa Serpentis

From Wikipedia, the free encyclopedia

Kappa Serpentis
Observation data
Epoch J2000      Equinox J2000
Constellation Serpens
Right ascension 15h 48m 44.37676s[1][2]
Declination +18° 08′ 29.6342″[1]
Apparent magnitude (V) 4.09[3]
Characteristics
Spectral type M0.5III[4]
U−B color index +1.95[3]
B−V color index +1.62[3]
Astrometry
Radial velocity (Rv)−38.48[5] km/s
Proper motion (μ) RA: −51.88[1] mas/yr
Dec.: −88.10[1] mas/yr
Parallax (π)8.54 ± 0.23 mas[1]
Distance380 ± 10 ly
(117 ± 3 pc)
Absolute magnitude (MV)−1.25[6]
Details
Radius51.3+5.1
−4.9[7] R☉
Luminosity628.0±33.8}[7] L☉
Temperature4,033+206
−185}[7] K
Other designations
Gudja, κ Ser, 35 Ser, NSV 7269, FK5 584, HD 141477, HIP 77450, HR 5879, SAO 101752[8]
Database references
SIMBADdata

Kappa Serpentis, Latinised from κ Serpentis, is a single,[9] red-hued star in the constellation Serpens, in its head (Serpens Caput). It has the proper name Gudja /ˈɡuːdʒə/[10] and the Flamsteed designation 35 Serpentis.[8] This star is visible to the naked eye with an apparent visual magnitude of +4.09.[3] It is located approximately 382 light years from the Sun, based on parallax,[1] and is drifting closer with a radial velocity of −38 km/s.[5]

This object is an aging red giant star with a stellar classification of M0.5III.[4] After exhausting the supply of hydrogen at its core, the star cooled and expanded off the main sequence, and now has around 51 times the Sun's radius. It is radiating 628 times the luminosity of the Sun from its photosphere at an effective temperature of 4,033 K.[7] This is a suspected variable star.[11]

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Transcription

Nomenclature

κ Serpentis (Latinised to Kappa Serpentis) is the star's Bayer designation.

The star bore the traditional name Gudja in the culture of the Wardaman people of the Northern territory of Australia, meaning 'water goanna'.[12] In 2016, the IAU organized a Working Group on Star Names (WGSN)[13] to catalog and standardize proper names for stars. The WGSN approved the name Gudja for this star on 10 August 2018 and it is now so included in the List of IAU-approved Star Names.[10]

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.
  2. ^ "HIP 77450 search results". VizieR. Centre de Données astronomiques de Strasbourg. Archived from the original on 2020-10-04. Retrieved 2020-10-04.
  3. ^ a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  4. ^ a b Keenan, Philip C.; McNeil, Raymond C. (October 1989). "The Perkins Catalog of Revised MK Types for the Cooler Stars". Astrophysical Journal Supplement Series. 71: 245–266. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
  5. ^ a b Famaey, B.; et al. (18 February 2009). "Spectroscopic binaries among Hipparcos M giants – I. Data, orbits, and intrinsic variations". Astronomy and Astrophysics. 498 (2): 627–640. arXiv:0901.0934. Bibcode:2009A&A...498..627F. doi:10.1051/0004-6361/200810698.
  6. ^ Anderson, E.; Francis, Ch. (25 May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  7. ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  8. ^ a b "kap Ser". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-14.
  9. ^ Eggleton, P. P.; Tokovinin, A. A. (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.
  10. ^ a b "IAU Catalog of Star Names (IAU-CSN)" (TXT). International Astronomical Union. 17 September 2018. Archived from the original on 2018-10-04. Retrieved 2018-09-17.
  11. ^ Samus, N. N.; et al. (28 September 2017). "General Catalogue of Variable Stars". Astronomy Reports. GCVS 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID 125853869.
  12. ^ "IAU Working Group on Star Names (WGSN)" (Press release). International Astronomical Union. Archived from the original on 2020-10-04.
  13. ^ "Division C WG Star Names". International Astronomical Union. Archived from the original on 2018-09-29. Retrieved 17 September 2018.
This page was last edited on 20 August 2023, at 14:14
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