[vsnet-newvar 693] [vsnet-id 316] Upgrade of 'TAV' or 'TASV' on Name Lists

[Guy M Hurst <guy@tahq.demon.co.uk>]

In message <200012241548.AAA03313@ceres.kusastro.kyoto-u.ac.jp>, Taichi
Kato <tkato@kusastro.kyoto-u.ac.jp> writes
>
>> Clearly once a name list is issued, all previously temporary
>> designations such as 'TASV' or 'TAV' are retained as cross references
>> only but observers with older charts often do not always notice the
>> change! 
>
>   This doesn't seem to be true.  Some examples in Collins' list include
>many examples like TASV 0358+57 (Q1990/95), TASV 0524+15 (Q1991/11),
>TASV 0534+10 (Q1990/92), TAV 0559+06 (Q1991/9) and many, many...
>We sometimes wonder whether these suspected variables are rejected as
>"suspected variables" by the GCVS team.  They can remain unidentified for
>most people who are not familiar with Collins' list, but with name lists.

I can see that my earlier statement has been misunderstood. What I was
trying to convey was that all those stars appearing on a given Name List
which previously had 'TAV' or 'TASV' designations will have their charts
updated so that observers use the new name. 

However, of course there will be many others which will not feature in a
given 'Name List'. This is because the GCVS team are waiting for more
data or a paper with detailed analysis to determine type, amplitude etc. 

I entirely support the view that variables should not be placed in the
name list until adequate evidence of variation is established,
preferably by more than one observer, and that supporting data on type
and range be supplied. This may well mean collecting data on many years
for slowly changing small amplitude variables.

>
>> I think an incorrect assumption has been made that all TA variables have
>> been found by Mike Collins and should be on his list. This is not the case
>> although Mike has found the vast majority!

Mike chooses to provide a very detailed and comprehensive list of his
discoveries which is made available on our WWW site. 

Other suspected variables are announced on TA E-Circulars and/or TA
monthly magazine. If anyone is interested they can subscribe to these
services.

In addition the whole listing of the current charts are freely available
at the TA WWW site. 

I do think it reasonable to expect Nick James, our very busy WWW master,
to start producing yet more lists on WWW with subsequent updates but if
any of your contributors have any queries about 'TA' variables please
ask them to e-mail me and I will do my best to help.

Regards,
Guy M Hurst
Editor, The Astronomer
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