Re: Hipparcos variables and TASS

[jg <jg@jgws.freeisp.co.uk>]

Maciej Reszelski wrote:
> 
> Hiya John,
> 
> Well correct me if I'm wrong but mostly of Nlist74 variables
> are defined. Mostly I think, as I see on my Guide 8. And about
> 50% of them are a red variable (Ma spec. type). Good work
> will be connected these pocket of variables with SR(a,b,c,d),
> L(c,b) types. Also good these others. Especially EA and
> EB variables. Are they correct defined periods?
> 
> Best regards,
> Maciej

I think I see what you mean now.

There were a surprising number of EA and EB types from Hipparcos, with
quoted periods, considering the time distribution of Hipparcos
photometry in both the long and short term.

First you'd have to check which Hipparcos variables went in to NL 74 and
the NSV supplement.  You may also want to decide if you trust the
variability types and periods in NL 74, or at least the ones that were
solely based on Hipparcos data.

Then Fabricius et al published a bunch of "New Tycho Variables" as a
following on to the Tycho 2 work, so you need to see if these resolved
any of the Hipparcos cases, there's bound to be overlap.

Then, as Arne said, there'll be tons of work for people to do with the
TASS data if they want to ;)

There's not enough out there yet to give any clues re type for long
period
objects, but will be in time I assume.

For short period objects there's a fair bit of TASS data, but as you've
probably seen, it's still often in need of follow up just to split the
EWs from the pulsators.

Cheers

John G.