New variables from the Top-20

[Patrick Wils <patrickwils@yahoo.com>]

The best new variables from the new Top-20 pages of the online database
are the following:

GSC 493-801 (object 206156): a new EA type eclipsing binary with a
period close to one day, 0.988 days, range 10.4-11.3 in V, 0.4 mag
brighter in I.  Tycho gives B-V=0.32.  Very nice curve!  Phase 0.5 is
not completely covered at this time, so a secondary minimum might still
be missing.  Only 2 nights of this object were included in the August
data set, so this is why this object hasn't popped up before.

HD182314 (object 227954): a new EW type star, mag 9.1-9.5V
(Bt-Vt=0.47), period probably around 0.424 days.  The light curve is
not complete yet.

The objects above are not very well placed at this time.

NSV 1697 = GSC 91-830 = 1RXS J044157.8+053641 (object 13471).  TASS
data confirm that this is a long period variable (NSV gives type LB),
but a lot more nights are needed to see if it is a semiregular or
irregular variable.  Tycho gives B-V=1.11.  The identification of a red
variable with an X-Ray source may be unusual.

Patrick


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