You are here: Variable classes
In this page you can see all the GCVS classifications. You can click the type and see a description of that below the table.
| Information |
Variable stars with nonuniform surface brightness and/or ellipsoidal
shapes, whose variability is caused by axial rotation with respect to
the observer. The nonuniformity of surface brightness distributions
may be caused by the presence of spots or by some thermal or chemical
inhomogeneity of the atmosphere caused by a magnetic field whose axis
is not coincident with the rotation axis. These stars are subdivided
into the following types:
ACV, ACVO, BY, ELL, FKCOM, PSR, SXARISub-class description FKCOM FK Comae Berenices-type variables. These are rapidly rotating giants with nonuniform surface brightnesses, which have G-K spectral types with broad H and K Ca II emission and sometimes Halpha. They may also be spectroscopic binary systems. Periods of light variation (up to several days) are equal to rotational periods, and amplitudes are several tenths of a magnitude. It is not excluded that these objects are the product of further evolution of EW (W UMa) close binary systems (see below). Copyright © English text: © N.N. Samus [Moscow Inst. Astron.] © O.V. Durlevich [Sternberg Astron. Inst., Moscow] Finnish text Copyright © Mika Luostarinen |
| Eruptive | Pulsating | Rotating | Cataclysmic | Eclipsing | X-ray | Other |
|
FU GCAS I IA IB IN INA INB INT INYY IS ISA ISB IT RCB RS SDOR UV UVN WR |
ACYG BCEP BCEPS CEP CEPB CW CWA CWB DCep DCEPS DSCT DSCTC L Lb Lc MIRA PVTEL RRab RR(B) RRC RR LYRAE TYPE RV RVa RVB SR SRa SRb SRc SRd SXPHE ZZ ZZA ZZB |
ACV ACVO BY ELL FKCOM PSR SXARI |
Nova SN SNI SNII UG UGSS UGSU UGZ ZAnd |
AR D DM DS DW E EA EB EW GS K KE KW PN RS SD WD WR |
X XB XF XI XJ XND XNG XP XPR XPRM,XM |
* BLLAC CST GAL L: QSO S |