(cba:news) SDSS J012940.05+384210.4 outburst confirmed]

[Joe Patterson]

Dear CBAers,

As we've come to suspect/learn over the last 15 years, the helium CVs 
have their own outbursts too, and with a morphology that might be very 
similar to their H-rich cousins.  But these stars are so few in number 
that a star's first well-observed outburst is pretty big news - and an 
excellent reason to pounce!

joe




-------- Original Message --------
Subject: [vsnet-alert 11702] SDSS J012940.05+384210.4 outburst confirmed
Date: Mon, 30 Nov 2009 20:06:02 +0900
From: Hiroyuki Maehara <mira at cetus-net.org>
To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-campaign-dn at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-newvar at ooruri.kusastro.kyoto-u.ac.jp, 
vsnet-outburst at ooruri.kusastro.kyoto-u.ac.jp
References: <E1NEvDs-0004oU-8M at mars.kusastro.kyoto-u.ac.jp>

  I confirmed an outburst of SDSS J012940.05+384210.4.
Time-resolved observation is in progress.

SDSSJ012940.05+384210.4 20091130.39918 150C     Mhh.VSOLJ

On Mon, Nov 30, 2009 at 10:38:40, Taichi Kato wrote:
>    According to Jeremy Shears (baavss-alert message), the suspected
> AM CVn-type CV SDSS J012940.05+384210.4 may be undergoing an outburst.
> The spectrum (Anderson et al. 2005 AJ 130, 2230) showed He I emission
> lines (not very strong).  Confirmatory observations and time-resolved
> photometry is encouraged.
> 
> ===
> 
> SDSS J012940.05+384210.4  Nov 29.045   14.5C
> 
> Outburst needs confirming, please, as it was on a single BRT image which was not fully focused