Double star in the constellation Andromeda
39 Andromedae , abbreviated39 And , is adouble star in the northernconstellation Andromeda .39 Andromedae is theFlamsteed designation . Itsapparent visual magnitude is 5.95,[ 2] parallax shift ofmas [ 1] light years . It is a suspected member of theUrsa Major Moving Group , although King et al. (2003) list it as a probable non-member.[ 8]
The brighter component is a confirmedAm star [ 9] stellar classification of kA3hA7VmA9.[ 3] spectrum displays thecalcium K line of an A3 star, thehydrogen lines of an A7 V, orA-type main-sequence star , and themetal lines of an A9 star. It is radiating 40[ 2] Sun's luminosity from itsphotosphere at aneffective 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 . RetrievedSeptember 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
