Thestellar classification of this star is B9IIIpSi,[4] where thepSi suffix indicates that the star shows peculiar chemical composition with stronger than usualsilicon lines. This type of star is known as anAp star, with the chemical peculiarities caused by strong magnetic fields and slow rotation leading to chemical stratification in the atmosphere.[7] The star is rotating at aprojected rotational velocity of 49 km/s,[9] with up to 0.05 magnitude variation of brightness during one rotation cycle. This leads to the classification of the star as anAlpha2 Canum Venaticorum variable.[4]
The variability of QV Andromedae was first identified in 1975,[11] and confirmed fromHipparcos photometry.[12] It was assigned thevariable star designation QV Andromedae in the 73rd namelist of variable stars in 1997.[13]
^abcdHøg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000), "The Tycho-2 catalogue of the 2.5 million brightest stars",Astronomy & Astrophysics,355:L27–L30,Bibcode:2000A&A...355L..27H.
^abcdefQV And, database entry, Combined General Catalog of Variable Stars (GCVS4.2, 2004 Ed.), N. N. Samus, O. V. Durlevich, et al.,CDS IDII/250 Accessed on line 2018-10-17.
^abcCutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003)."VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)".CDS/ADC Collection of Electronic Catalogues.2246: II/246.Bibcode:2003yCat.2246....0C.
^Kholopov, P. N.; Samus, N. N.; Kazarovets, E. V.; Perova, N. B. (1985). "The 67th Name-List of Variable Stars".Information Bulletin on Variable Stars.2681: 1.Bibcode:1985IBVS.2681....1K.
