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Double star in the constellation Andromeda
39 Andromedae , abbreviated 39 And , is a double star in the northern constellation Andromeda . 39 Andromedae is the Flamsteed designation . Its apparent visual magnitude is 5.95,[ 2] parallax shift of mas [ 1] light years . It is a suspected member of the Ursa Major Moving Group , although King et al. (2003) list it as a probable non-member.[ 8]
The brighter component is a confirmed Am star [ 9] stellar classification of kA3hA7VmA9.[ 3] spectrum displays the calcium K line of an A3 star, the hydrogen lines of an A7 V, or A-type main-sequence star , and the metal lines of an A9 star. It is radiating 40[ 2] Sun's luminosity from its photosphere at an effective temperature of 8,073 K.[ 6] angular separation of ″ position angle of 3° from the primary.[ 10]
^ 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 ^ a b c d e f 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 Levato, H.; Abt, H. A. (August 1978), "Spectral types in the Ursa Major stream", Publications of the Astronomical Society of the Pacific , 90 : 429−433, Bibcode :1978PASP...90..429L , doi :10.1086/130352 ^ 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. ^ Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics , 367 (3rd ed.): 521–524, arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P , doi :10.1051/0004-6361:20000451 , S2CID 425754 . ^ a b c d e Monier, R. (November 2005), "Abundances of a sample of A and F-type dwarf members of the Ursa Major Group", Astronomy and Astrophysics , 442 (2): 563–566, Bibcode :2005A&A...442..563M , doi :10.1051/0004-6361:20053222 ^ "39 And" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved September 28, 2018 .^ King, Jeremy R.; et al. (2003), "Stellar Kinematic Groups. II. A Reexamination of the Membership, Activity, and Age of the Ursa Major Group", The Astronomical Journal , 125 (4): 1980, Bibcode :2003AJ....125.1980K , doi :10.1086/368241 ^ Renson, P.; Manfroid, J. (May 2009), "Catalogue of Ap, HgMn and Am stars", Astronomy and Astrophysics , 498 (3): 961–966, Bibcode :2009A&A...498..961R , doi :10.1051/0004-6361/200810788 ^ 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
