Sziasztok!

A MASTER csapat újabb törpenóvát talált, ezúttal az Orionban. A csillag
legalább 7 magnit fényesedett, a felfedezéskor 13,4 magnitúdó volt a
fényessége. Készítettem hozzá öh-kat, remélhetőleg hamarosan elérhetőek
lesznek a VSP-n keresztül.

* * *

http://www.astronomerstelegram.org/?read=4446

8 mag amplitude OTdetected by MASTER

MASTER OT J054317.95+093114.8 - new bright CV

MASTER-Amur auto-detection system discovered OT source at (RA, Dec) =
05h 43m 17.95s +09d 31m 14.8s on 2012-09-30.78510 UT. The OT unfiltered
magnitude is 13.4m (limit 17.9m). The OT is seen in 2 images. There is
no minor planet at this place. We have reference image without OT on
2011-11-02.73236 UT with magnitude limit in ´V´ filter 18.8m.

There is a faint star (magnitude ~21) within 1.5" from the position of
the OT visible on POSS-II plates. Color-combined (BRIR) DSS finder chart
is uploaded to http://master.sai.msu.ru/static/OT/J0543+0931-BRIR.jpg
(10´x10´ FOV).

There is nothing at this position in USNO-B1.0, GSC 2.3.2, 2MASS, 1RXS
and GCVS catalogs and in AAVSO VSX. This area is not covered by SDSS,
CSS and GALEX. Nothing is visible on the sum of 3 NEAT images of this
filed taken on 2001 Sep. 23 (limiting magnitude 20.5).

The galactic latitude is 10.5 deg. Based on the amplitude of variability
(more than 7 magnitudes) we suggest that MASTER OT J054317.95+093114.8
is likely a cataclysmic variable (dwarf nova or classical Nova) in
outburst.

Follow up observations are required.

The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/054317.95093114.8.png

--
Fidusz (FIDRICH Robert)
drotlevel:fidusz@zpok.hu
#jabber/gtalk: fidusz@jabber.hu