Star in the constellation Hercules
93 Herculis is astar located around 750[ 1] light years away from the Sun in the northernconstellation ofHercules .[ 8] apparent visual magnitude of 4.67[ 2] extinction of 0.21 due tointerstellar dust .[ 9] radial velocity of −24.5 km/s.[ 4] 95 Her ,102 Her , and109 Her , made up the obsolete constellationCerberus .[ 10]
This object has astellar classification of K0.5IIb,[ 3] evolved bright giant . With the supply of hydrogen at itscore exhausted, the star has expanded to 47 times theSun's radius . It is radiating around 868 times theluminosity of the Sun from its enlargedphotosphere at aneffective temperature ofK [ 5] metal elements , but appears weakly enhanced in barium and other heavier elements.[ 11] barium star and hence may have awhite dwarf companion in orbit.[ 12]
^a b c d e f 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 atVizieR .^a b c d 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 . ^a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars",Astrophysical Journal Supplement Series ,71 : 245,Bibcode :1989ApJS...71..245K ,doi :10.1086/191373 . ^a b 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. ^a b c d Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023)."Variability Catalog of Stars Observed during the TESS Prime Mission" .The Astrophysical Journal Supplement Series .268 (1): 4.arXiv :2208.11721 Bibcode :2023ApJS..268....4F .doi :10.3847/1538-4365/acdee5 ^a b Coelho, Paula R. T.; Bruzual, Gustavo; Charlot, Stéphane (2020)."To use or not to use synthetic stellar spectra in population synthesis models?" .Monthly Notices of the Royal Astronomical Society .491 (2): 2025.arXiv :1910.11902 Bibcode :2020MNRAS.491.2025C .doi :10.1093/mnras/stz3023 ^ 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.arXiv :1312.3474 Bibcode :2014A&A...561A.126D .doi :10.1051/0004-6361/201220762 . ^a b "93 Her" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2019-06-16 .^ Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters",Astronomy and Astrophysics ,430 (1):165– 186,arXiv :astro-ph/0409579 Bibcode :2005A&A...430..165F ,doi :10.1051/0004-6361:20041272 ,S2CID 17804304 . ^ Ridpath, Ian,Ian Ridpath's Star Tales - Cerberus , retrieved2019-06-16 . ^ Smith, G. R.; Harmer, D. L. (January 1982), "A differential curve-of-growth analysis of the candidate barium star 93 Her",Monthly Notices of the Royal Astronomical Society ,198 :273– 280,Bibcode :1982MNRAS.198..273S ,doi :10.1093/mnras/198.1.273 ^ 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 .
