Star in the constellation Andromeda
15 Andromedae , abbreviated 15 And , is a single,[10] variable star [7] constellation of Andromeda . 15 Andromedae is the Flamsteed designation , while its variable star designation is V340 And.[9] apparent visual magnitude is 5.55,[3] light years , and it is moving further away with a heliocentric radial velocity of 13 km/s.[3]
Depending on the source, this star has been classified as a giant star with a stellar classification of A1 III,[4] A-type main-sequence star with a class of A1 Va,[5] Lambda Boötis star with a class of kA1hA3mA0.5 Va+.[6] Delta Scuti variable that changes in brightness by 0.03 magnitude.[7] [11] [4] projected rotational velocity of 105 km/s.[8] mass of the Sun and is radiating 27 times the Sun's luminosity from its photosphere at an effective temperature of 9,225 K.[4]
This system has an excess emission of infrared radiation that suggests the presence of an orbiting disk of dust at a distance of around 50 AU from the host star.[4]
References
^ "MAST: Barbara A. Mikulski Archive for Space Telescopes" . Space Telescope Science Institute. Retrieved 8 December 2021 .^ 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 ^ a b c d e 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 c d e f Wyatt, M. C.; et al. (July 2007), "Steady State Evolution of Debris Disks around A Stars", The Astrophysical Journal , 663 (1): 365–382, arXiv :astro-ph/0703608 Bibcode :2007ApJ...663..365W , doi :10.1086/518404 , S2CID 18883195 ^ a b Paunzen, E.; et al. (July 2001), "A spectroscopic survey for λ Bootis stars. II. The observational data", Astronomy and Astrophysics , 373 (2): 625–632, Bibcode :2001A&A...373..625P , doi :10.1051/0004-6361:20010630 ^ a b Murphy, Simon J.; et al. (2015), "An Evaluation of the Membership Probability of 212 λ Boo Stars. I. A Catalogue", Publications of the Astronomical Society of Australia , 32 : e036, arXiv :1508.03633 Bibcode :2015PASA...32...36M , doi :10.1017/pasa.2015.34 , ISSN 1323-3580 , S2CID 59405545 . ^ a b c Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017), "General catalogue of variable stars: Version GCVS 5.1", Astronomy Reports , 61 (1): 80, Bibcode :2017ARep...61...80S , doi :10.1134/S1063772917010085 , S2CID 125853869 . ^ a b c d Paunzen, E.; et al. (November 2002), "The status of Galactic field λ Bootis stars in the post-Hipparcos era", Monthly Notices of the Royal Astronomical Society , 336 (3): 1030–1042, arXiv :astro-ph/0207488 Bibcode :2002MNRAS.336.1030P , doi :10.1046/j.1365-8711.2002.05865.x , S2CID 2389489 . ^ a b "15 And" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved September 20, 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 . ^ Dorokhova, T. N.; et al. (March 2008), "The pulsating λ Bootis star 15 Andromedae: results from a three-site photometry campaign.", Astronomy and Astrophysics , 480 (1): 187–191, Bibcode :2008A&A...480..187D , doi :10.1051/0004-6361:20078750
External links
This page was last edited on 22 December 2023, at 05:24
This page was last edited on 22 December 2023, at 05:24