[vsnet-alert 9967] Fw: Re: OT_J055924.1-512522 (new object in Pic)

[Daisaku NOGAMI]

 Date: Fri, 07 Mar 2008 14:13:26 +0200
 From: "Berto Monard" <lagmonar at nmisa.org>
 To: <cba-news at cba.phys.columbia.edu>,
         <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>, <AVSON at yahoogroups.com>
 Cc: "Hiroyuki Maehara" <mira at cetus-net.org>, <cbat at cfa.harvard.edu>
 Subject: Re: [vsnet-alert 9936] OT_J055924.1-512522 (new object in Pic)

The optical transient in Pictoris was observed over three hours last night
at CBA Pretoria. This is two weeks after the initial detection.

The following approximate magnitudes where derived on mid time UT
20080306.77:

B= 15.8 (+/- 0.15)
V= 15.7 (+/- 0.1)
R= 15.6 (+/- 0.1)
I= 15.8 (+/- 0.15)

Timeseries photometry with unfiltered CCD show a modulation in the light
curve with period around 1.5h and amplitude of 0.15 .

This object is very likely an outbursting dwarf nova (ugsu) and not a SN
as might be initially derived from its directional nearness to a side-on
galaxy, which is probably a bit too far out for the measured brightness of
the object.

Further observations will be attempted.

Berto Monard
Bronberg Observatory / CBA Pretoria

///

On Wed, Feb 27, 2008 at 12:58:57PM +0900, Taichi Kato wrote:
>   According to CBAT's "Unconfirmed Observations Page", a possible
> transient has been reported in Pic.  mag =3D 13.3R at 055924.1 -512522

In the USNO B1.0 catalog, there is a faint object at the reported =
position.

USNO-B1.0 0385-0053065  05 59 24.07 -51 25 22.0 B2mag=21.13 R2mag=20.58