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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Pulsating variables are stars showing periodic expansion and
contraction of their surface layers. The pulsations may be radial or
nonradial. A radially pulsating star remains spherical in shape, while
in the case of nonradial pulsations the stars shape periodically
deviates from a sphere, and even neighboring zones of its surface may
have opposite pulsation phases.
Depending on the period value, on the mass and evolutionary status of the star, and on the scale of pulsational phenomena, the following types of pulsating variables may be distinguished: ACYG, BCEP, BCEPS, CEP, CEP(B), CW, CWA, CWB, DCEP, DCEPS, DSCT, DSCTC, L, LB, LC, M, PVTEL, RR, RR(B), RRAB, RRC, RV, RVA, RVB, SR, SRA, SRB, SRC, SRD, SXPHE, ZZ, ZZA, ZZBSub-class description RVA RV Tauri variables that do not vary in mean magnitude (AC Her); 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 |