[vsnet-alert 17913] Re: PNV J03093063+2638031:likely a dwarf nova?

[Tonny Vanmunster]

Dear colleagues,

I just concluded a time-resolved unfiltered CCD photometry session of this
target at my new CBA Belgium Observatory, using a 14" telescope with
STT-3200ME CCD (Paramount ME II, ScopeDome 3m). Clouds prevented me from
continuing the run. So far, the data show a 0.05 mag 'hump', which is
consistent with Gianluca's message below. Unfortunately, the run has not
been sufficiently long to allow a more accurate analysis nor period
determination. 

Data will be made available to the Kyoto and CBA teams.

If sky conditions improve during the course of this night, I will resume the
session.

Best regards
Tonny

www.cbabelgium.com
www.peranso.com


-----Original Message-----
From: vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp
[mailto:vsnet-alert-bounces at ooruri.kusastro.kyoto-u.ac.jp] On Behalf Of
Gianluca Masi
Sent: donderdag 30 oktober 2014 23:44
To: ALERT, VSNET
Subject: [vsnet-alert 17912] PNV J03093063+2638031:likely a dwarf nova?

Dear Colleagues,

we performed low-res spectroscopy of this transient, remotely using the 14" 
robotic unit part of the Virtual Telescope in Italy.

300-seconds exposures were taken on 30.8125 Oct. UT, using a 100 lines/mm
grating, with a dispersion of 34.5 angstroms/pixel: we do NOT see evidence
of strong H-alpha emission.

We also performed time-resolved photometry of the source with the same
telescope, found at mag 11.1 (R, unfiltered), seeing a 0.05 large modulation
(early superhumps?).

Observations are ongoing.

Regards
Gianluca Masi
Pier Luigi Catalano