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[vsnet-chat 6124] FU ErI's Chris and ASAS period is the right one




> Looking at the ASAS data the period is half of what you suggest. There is
> a clear indication of a weak secondary eclipse at phase 0.5 and there's
> even a suggestion of it in the Hipparcos data. From the combined
> Hipparcos, ASAS and visual minima I get a new ephemeris of
>
> HJD_minI = 2448725.726 + 1.872206xE
>
> which is practically identical to the previous one.

Dear Chris and Anton,

Thanks for directing me to ASAS webpage and this impressive lightcurve.
I'm not surprised I didn't notice the secondary eclipse in Hipparcos data.
The eclipse is only 0.03 mag. deep!!!
Actually, even now I have to get my eyes sore to see any indication of the
eclipse in the satellite's data.
The ASAS lightcurve clearly demonstrates I was wrong and jumped to
conclussions.
It is no often that I stumble upon these so unequal components.
What do you suggest as the secondary? Maybe a K dwarf?

I visited the ASAS webpage and it is really a great job.
I was searching through the cross-ID's in order to see if there was another
known bright Hipparcos EA there, at least one of those I use to observe.
Correct me if I'm wrong but I didn't find another case. If there is
something I missed, please let me know so I can focus on other stars and
eclipsing binary observers don't duplicate efforts.
What I found a little strange is the classification system. Why not to stick
to the GCVS traditional classification?
Ec, Ed and all those abbreviations are not familiar for those who deal with
variable stars so I don't see the point in introducing new nomencalture
here.

Congratulations for your work and thanks for pointing out my mistake.

Best wishes,
Sebastian.

PS: I will change my webpage and link it to ASAS.
http://ar.geocities.com/varsao/Curva_FU_Eridani.htm


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