[vsnet-chat 4705] Re: re SARVs - AU Ari

["Stan Walker" <astroman@voyager.co.nz>]

Hi John,

I'll have to catch up on all of this. Maybe the whole SR area needs a clean
out - or maybe the stars like L2 Puppis and others with extremely repetitive
periods - even if there are several going at once - should be put into a
better compartment.

Regards,
Stan


----- Original Message -----
From: <crawl@zoom.co.uk>
To: <astroman@voyager.co.nz>; <vsnet-chat@kusastro.kyoto-u.ac.jp>
Sent: Monday, August 06, 2001 9:47 AM
Subject: re SARVs - AU Ari


>
> In my last post I said SARVs may now possibly be known as AU Aur stars I
> think,
>
> actually I should have said SARVs may now possibly be known as AU ARI
stars
> [hey you Harry stars perchance ;) ]
>
> Type star of the new Namelist 76 introduced SRS variability type, this
star
> is catalogued as having a magnitude range of 8.45 to 8.69 in the Hipparcos
> Photometric Magnitude system, with no period quoted.
>
> Possibly SARVs have finally come home to roust with this definition, but
> interestingly a newly named variable as identified via Hipparcos data has
> been chosen rather than already known variables that have either been
> studied as SARVs by the Mount Johns group[s] or say Percy and the AAVSO
PEP
> groups with their SARV projects over the years.
>
> Especially as Hipparcos epoch photometry isn't ideal for periodicity work,
> and indeed is documented by the Hipparcos people themselves as being
> intrinsically unable to be solved for periods twixt 20 and 100 days, which
> is still within the SRS "window", whilst the above mentioned groups have
> generated fairly long photometry baselines for their project stars.
>
> Cheers
>
> John
>
> John Greaves
> UK
>
>

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