501Re: [AAVSO-DIS] Question About the Variable Types in the Variable StarIndex
- Sep 5, 2010Hi Gene
> Is there a list of the Variable Type field values in theNo, not that I know of.
> Variable Star Index?
> The reason I'm asking is because some of the eclipsingYour expectations are not correct !
> binaries I'm observing/planning to observe (U Cep, Beta Per,
> Epsilon Aur) have "EA" for the type and I expected to see "EB."
EB is the general acronym for "Eclipsing Binary".
But if a var type is meant, its defined as following:
EA = EBs of A = Algol subtype.
EB = EBs of B = beta Lyr subtype.
EW = EWs of W = W UMa subtype.
So giving the var type EA for all these EBs is correct.
Tricky, isn't it ? Sometimes even the experts might not know
if EB means "Eclipsing Binary" or "EB of beta Lyr subtype".
> Most also have a forward slash and a second abreviation.Most var types in the VSX originate from the GCVS.
> I seached for a complete list but couldn't find one. If
These are originally described here:
A short overview of var types by the ATNF:
Short list of var types by the ASSA:
Extended summary with light curves (LCs) by the AEOFV:
and GEA at:
HIP subset of GCVS var types:
If a var type is not in the above GCVS lists, its probably specific
for the paper/catalog that is given in the VXSX references. Some
of the additionally used var types are e.g. defined here:
Ritter & Kolb RKcat:
More modern pulsating var types:
2008CoAst.157..240J - The impact of asteroseismology on the theory
of stellar evolution - Jeffery, C. S.
Figure 1: Schematic Hertzsprung-Russell diagram showing the locus of
major classes of pulsating variable star.
IAUS 272 on Actives OB stars
Wolfgang Renz, Karlsruhe, Germany
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