Star in the constellation Andromeda
11 Andromedae , abbreviated11 And , is a single,[ 10] star in the northernconstellation ofAndromeda .11 Andromedae is theFlamsteed designation . It has anapparent visual magnitude of 5.44,[ 2] parallax shift ofmas [ 1] light years . It is moving further from the Earth with a heliocentricradial velocity of +10 km/s.[ 1]
This is anevolved giant star with astellar classification of K0 III,[ 3] main sequence . It has an estimated 2.57[ 5] mass of the Sun and has expanded to around 12[ 6] Sun's radius . It is radiating 63[ 2] Sun's luminosity from its enlargedphotosphere at aneffective temperature of 4,874 km/s.[ 5]
Within Andromeda it is the south-west end of a bright northerly chain (jagged line)asterism – the others being, their order going with numbering, 8, 7, 5 and3 Andromedae .
^a b c d e f g h 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 Griffin, R. F.; Redman, R. O. (1960), "Photoelectric measurements of the lambda 4200 A CN band and the G band in G8-K5 spectra",Monthly Notices of the Royal Astronomical Society ,120 : 287,Bibcode :1960MNRAS.120..287G ,doi :10.1093/mnras/120.4.287 ^ Hoffleit, D.; Warren Jr., W. H., "HR 8874, database entry",The Bright Star Catalogue CDS . V/50 . Accessed on line August 21, 2008.^a b c d e Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants",The Astrophysical Journal ,785 (2): 12,arXiv :1404.1687 Bibcode :2014ApJ...785...94L ,doi :10.1088/0004-637X/785/2/94 ,S2CID 119226316 , 94. ^a b Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)",Astronomy and Astrophysics ,367 (Third ed.):521– 524,arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P ,doi :10.1051/0004-6361:20000451 ,S2CID 425754 ^ Gáspár, András; et al. (2016), "The Correlation between Metallicity and Debris Disk Mass",The Astrophysical Journal ,826 (2): 171,arXiv :1604.07403 Bibcode :2016ApJ...826..171G ,doi :10.3847/0004-637X/826/2/171 S2CID 119241004 . ^ De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars",Astronomy and Astrophysics ,363 :239– 243,arXiv :astro-ph/0010273 Bibcode :2000A&A...363..239D . ^ "11 And" .SIMBAD Centre de données astronomiques de Strasbourg . RetrievedSeptember 18, 2018 .^ 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 .
