OGLE-2014-NOVA-01: Nova candidate in the Bulge
ATel #6002; L. Wyrzykowski, A. Udalski, S. Kozlowski, K. Ulaczyk, R. Poleski, D. Skowron (Warsaw University Astronomical Observatory, Poland), on behalf of the OGLE team
on 23 Mar 2014; 05:32 UT
Distributed as an Instant Email Notice Novae
Credential Certification: Lukasz Wyrzykowski (wyrzykow@ast.cam.ac.uk)
Subjects: Optical, Nova, Transient
The OGLE-IV Transient Search (Wyrzykowski et al. ATEL #4495, Kozlowski et al. 2013)
reports the detection of a new star in the Galactic Bulge, likely a Classical Nova eruption.
The object first appeared on the OGLE frames taken on Feb 16 (JD=2456704) at 15.2 mag in the I-band
and subsequently faded with current (JD=2456735) magnitude of 16.3.
From the available photometric data we estimate the t2~50 days,
hence the absolute brightness of about M_I=-6.6 mag (following Cohen 1985), typical for Galactic Classical Novae.
The maximum brightness of the eruption is not known but the explosion must have happened
between Oct 18th 2013 and Feb 16 2014, given the non-detection on the former frame.
There was also no prior outbursts at this location since OGLE-IV started observing this field in 2010.
This supports the nova scenario and significantly lowers the probability this was a dwarf nova.
There is a potential progenitor visible on the deep template image with magnitude fainter than about 22 mag.
The coordinates of the OGLE-2014-NOVA-01 are Ra,Dec(J2000.0)= 17:55:20.27 -23:23:54.5.
Photometric and spectroscopic follow-up is strongly encouraged.
Finding chart and light curve are available here.
