Looking at Data

[Thomas Droege <tdroege2@earthlink.net>]

There was a possible storm last night so I shut down at midnight.  That
means that I did not have to work so hard this morning.  Still, I got
200,000 measurement pairs before I turned off. 

I took the time to look at TOM2 data with the August data appended.  Taking
a WS cut at 20 I got 6432 stars.  Running through my selection program
reduced this number to 243.  My program makes sure the star still is
variable after removing the high and low stars and then makes sure the
variation left is 3 sigma over the expected variation for the given
magnitude.

I plotted the first 20 and looked them up in VizieR:

IX Cas
LZ Cas
IRAS source.  about 60 day period, 0.5 mag amplitude in V
TV Boo
RS Boo
TW Boo
ROTSE variable
AC Boo
ROTSE variable
TV CrB
IRAS source  about 150 day period, 0.3 mag amplitude in V
ROTSE variable
IRAS source about 150 day period. 0.6 mag amplitude in V
GCCS  carbon star
TT CrB
TYC  Tycho variable star
ROTSE variable
AR Her
NSV 7457
IRAS roughly 150 days, 0.5 mag amplitude.

Sigh!  I was hoping for more new variables.  However, the above
demonstrates that the data is not complete junk.  Looks like we will
confirm a lot of long period variables when we get more data.  

I am attaching the full list for anyone masochistic to go through them all.
There is enough data for many of them already in the data base.  This data
should get there by mid September.  

I suppose I will have to set the cut looser and go through the list again. 

Tom Droege

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