[vsnet-alert 16793] MASTER OT J003059.39+301634.3 - likely an eclipsing dwarf nova
Denis Denisenko
d.v.denisenko at gmail.com
Sat Jan 18 23:19:54 JST 2014
Sergey Shurpakov has found new CV in Andromeda among MASTER-Tunka
transients, MASTER OT J003059.39+301634.3 (16.1-20:m). It was
published in Astronomer's Telegram ATel #5774,
http://www.astronomerstelegram.org/?read=5774
MASTER OT J003059.39+301634.3
20140117.474 161C MASTER-Tunka
20140117.505 166C MASTER-Tunka
Other IDs:
GALEX J003059.3+301635 (NUV=20.90+/-0.25)
USNO-A2.0 1200-00232738 (00 30 59.46 +30 16 34.9 R=18.2 B=18.7)
USNO-B1.0 1202-0006789 (00 30 59.439 +30 16 34.72 B1=18.96 R1=18.47
B2=19.97 R2=19.21)
SDSS J003059.40+301634.4 (u=18.27 g=18.07 r=18.03 i=18.03 z=18.03)
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237680483028566024
The object is showing large variability on the short time scales in
both MASTER and Catalina Sky Survey data. Note the fading by 0.5m in
45 minutes between the two triplets of MASTER-Tunka images on Jan. 17.
The similar variability is present in the archival CSS light curve:
http://nesssi.cacr.caltech.edu/cgi-bin/getcssconedb_id.cgi?ID=1129003052556&OUT=csv&SHORT=short&PLOT=plot
MASTER OT J003059.39+301634.3 is probably an eclipsing dwarf nova.
Photomertic time series are strongly encouraged. SDSS colors are
telling in favor of a short orbital period.
Denis Denisenko
Member of MASTER team at SAI MSU
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