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.
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Eruptive variables are stars varying in brightness because of violent
processes and flares occurring in their chromospheres and coronae. The
light changes are usually accompanied by shell events or mass outflow
in the form of stellar winds of variable intensity and/or by
interaction with the surrounding interstellar medium. This class
includes the following types:
FU, GCAS, I, IA, IB, IN, INA, INB, INT, IT, IN(YY), IS, ISA, ISB, RCB, RS, SDOR, UV, UVN, WRSub-class description RCB Variables of the R Coronae Borealis type. These are hydrogen-poor, carbon- and helium-rich, high-luminosity stars belonging to the spectral types Bpe-R, which are simultaneously eruptive and pulsating variables. They show slow nonperiodic fadings by 1-9 mag in V lasting from a month or more to several hundred days. These changes are superposed on cyclic pulsations with amplitudes up to several tenths of a magnitude and periods in the range 30-100 days. 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 |
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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 |