[vsnet-alert 10466] NSV00601 outburst (and past info)

[Taichi Kato]

   According to Eddy Muyllaert, NSV00601 is undergoing the first
outburst since its historical one in 2001.
(See past info attached below)

   A closer look at the 2001 outburst data, I noticed:
the object faded by 0.2 mag on the first night, and the outburst lasted
at least for 15 days.  These features suggest that the object might be
a borderline object somewhere between usual SU UMa - WZ Sge subclasses.
(Might be similar to BC UMa and others).  Please observe to see whether
the current outburst rapidly fades or not.

===

Subject: [vsnet-alert] NSV 601 in outburst

NSV601 080827.2042  15.56C MUY   OUTBURST

Bradford Robotic Telescope: 35cm SCT+CCD=20

Regards,
Eddy Muyllaert (MUY)
Oostende
Belgium
eddy.muyllaert1 at pandora.be

===

[vsnet-alert 8620] NSV 601 = New dwarf nova

Dear colleagues,

I have found a new dwarf nova in ASAS data.
It is NSV 601, although the GCVS position and identification for NSV 601 is 
for another star, 2MASS J01422764-2216294 (J= 14.53; J-K 0.47) and 2UCAC 
22828004 (mag. 15.89). It is in the NPM1 catalogue (NPM -22.0272) with V= 
15.64 and B-V= 0.68.

The new UG is not in 2MASS or UCAC2 (no outbursts in NSVS either)

It is in the PHL Catalog of faint blue stars at 18.7p. This one IS the star. 
The PHL position agrees with ASAS. The fact that it is a blue star confirms 
the identification.
PHL 3638 is also:
USNO A-2.0 0675-00607322 = 01 42 25.249 -22 15 57.16 (B= 18.4)
USNO B-1.0 0677-0026724 = 01 42 25.28 -22 15 58.3 (B= 18.8)
GSC2.2 S00300011770 = 01 42 25.247 -22 15 56.73 (Bj= 18.48)

It is not in the 2005 version of the Downes catalogue.

The maximum magnitude in the 15-days long outburst recorded by ASAS (the 
only one to date in November 2001) is V= 12.2.
It is ASAS 014225-2216.0. See the lightcurve here:
http://www.astrouw.edu.pl/cgi-asas/asas_lc/014225-2216.0

NSV 601 is 12.2 at maximum (12.2 - <14.4) and it is BV 1187.

So NSV 601 is USNO A-2.0 0675-00607322 and it is a new UG star with an 
approximate range 12.2 - 18.7.

Which subtype it is and future work is in the hands of you, CV specialists!
Surely you will look at photographic plates and find more outbursts of this 
thing.

Best wishes,
Sebastian. 

===

[vsnet-alert 8621] NSV601 is likely a new SU UMa-type dwarf nova

   The following ASAS-3 data suggest a superoutburst of
an SU UMa-type dwarf nova.

   2222.61777 12.982 12.935 13.010 12.970 12.877    0.065 0.032 0.023 0.026 0.023  A 39176
   2224.60825 12.231 12.201 12.238 12.231 12.260    0.061 0.030 0.021 0.024 0.021  A 39333
   2225.61497 12.447 12.553 12.577 12.622 12.627    0.059 0.033 0.022 0.023 0.021  A 39499
   2226.61342 12.543 12.666 12.670 12.712 12.683    0.064 0.034 0.023 0.026 0.023  A 39653
   2227.60955 12.673 12.692 12.654 12.628 12.579    0.066 0.033 0.021 0.027 0.024  A 39804
   2228.60660 12.770 12.809 12.713 12.688 12.680    0.070 0.031 0.022 0.026 0.024  A 39965
   2229.60411 12.898 12.846 12.942 13.008 13.046    0.057 0.035 0.023 0.026 0.024  A 40127
   2230.60192 12.928 12.859 12.890 12.854 12.814    0.060 0.033 0.024 0.028 0.025  A 40291
   2232.59455 13.298 13.223 13.357 13.443 13.370    0.069 0.035 0.023 0.025 0.022  A 40455
   2233.59742 13.518 13.415 13.422 13.410 13.455    0.070 0.034 0.025 0.028 0.026  A 40617
   2235.58426 13.534 13.679 13.703 13.714 13.627    0.056 0.031 0.021 0.023 0.022  A 40921
   2236.58066 13.786 13.669 13.600 13.648 13.611    0.058 0.031 0.022 0.025 0.022  A 41082