[vsnet-chat 4565] new Tycho variables...

[crawl@zoom.co.uk]

A list of freshly analysed possibly variable stars from the Tycho data
annexes can be found at the CDS ftp site under the J/A+A/373/576 subdirectory.

Although some are identified with GCVS objects and some with NSV objects,
none _seem_ to have been checked against Namelist 75 or the supplement to
the NSV.

A millidegree level check against Taichi Kato's newvar.cat datafile of
unofficial and potential variables reveals no link with any of those
suspect variables to those noted in the new Tycho table, but of the
potentially variable objects that he also lists in newvar.cat, several of
the Luminous Milky Way stars are suggested to be variable according to this
fresh analysis of Tycho Epoch Photometry.

List follows:-

newvar.cat        Tycho ID         HIP No.

> LSV+55.2        3690  1948 1     1069
> LSV+57.33       3694  1727 1      
> LSI+61.282      4046   118 1      
> LSV+35.12       2402     6 1      2517
> LSII+27.26     2148  3858 1      
> LSIII+55.25     3973  1031 1      
> LSIII+47.58     3611   701 1    11092
> LSI+59.24     4281  2033 1      
> LSS4360        6840   821 1      8689
> LSS4857        6269  2398 1      

all the rest of the matches to newvar.cat are known GCVS stars, with 1 NSV
object (Q1996/035 = Tyc 753  1231 1 = NSV 3369)

The above are mostly going to be low amplitude variables, either in need of
photometric follow up or of a Sebastian type visual observer ;) )

Cheers

John

John Greaves
UK

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