[Aavso-photometry] RXSJ053234 Super outburst triggered by normal outburst 4 days before

[Geir Klingenberg]

It sounds plausible to me that this is a superoutburst triggered by a
normal outburst. According to Hellier one can often see a slight
hiatus before the superoutburst brightens to maximum. Is that what we
see in the light curve around 00:45 UT on March 19? (See the light
curve at the AAVSO web site or on my web page at
http://asp.jm-data.no/geke15obs/#18.03.2005 around JD 2453448.53).

Also, on March 20 the star brightened with about 0.15 mag during a 9
hour run. Tonight there seems to be a slight decrease in brightness
but the decrease is much slower than two days ago, about 0.003
mag/hour compared to 0.03 mag/hour, which might also indicate a
superoutburst. Tonight the mean magnitude is about 11.9, and I get a
sumperhump period of 0.0573 days with mean amplitude of 0.13 using
Peranso.

Regards,
Geir Klingenberg


On Sun, 20 Mar 2005 23:12:38 +0100, Wolfgang Renz <w_renz at onlinehome.de> wrote:
> 
> RXSJ053234   20050320.885   117   RWG   Moon, Haze, Simonsen chart
> 
> Visual obs and CCD clear obs of the last 24 h are ~ 0.2 mag brighter than
> before the dip of ~ 1 mag.
> 
> Is there an other explaimation than that a normal outburst triggered a super outburst ?
> 
> Clear skies
>  Wolfgang
> 
> --
> Wolfgang Renz, Karlsruhe, Germany
> Rz.BAV = WRe.vsnet = RWG.AAVSO
> 
> ----- Original Message -----
> From: "Jani Virtanen" <jani_virtanen2004 at yahoo.com>
> To: <baavss-alert at yahoogroups.com>
> Sent: Saturday, March 19, 2005 9:26 PM
> Subject: [baavss-alert] ALERT: RXSJ053234 outburst continues!
> 
> > RXSJ053234 050319.8042  11.9  VIR   107,112,124 USNO
> > RXSJ053234 050319.8306  11.8  VIR   107,112,124 USNO
> >
> > Regards, Jani Virtanen
> > Ylivieska, Finland
> 
> ----- Original Message -----
> From: "Jeremy Shears" <bunburyobservatory at hotmail.com>
> To: <baavss-alert at yahoogroups.com>; <aavso-photometry at mira.aavso.org>; <cvnet-outburst at yahoogroups.com>
> Sent: Sunday, March 20, 2005 1:55 PM
> Subject: [baavss-alert] Superhump period of 1RXS J053234.9+624755
> 
> > I carried out time series photometry on this CV last night, 2005 March 19,
> > between 19.30 and 23.29 UT (clouded out). Although the conditions were not
> > ideal – bright moonlight and thin haze – the star was very bright (much
> > brighter than the previous night). The instrument was a Takahashi FS102
> > apochromatic refractor, with an unfiltered Starlight Xpress MX716 CCD
> > camera.
> >
> > During the 4 h observation window, 408 separate images were collected. These
> > were reduced in AIP4WIN and subsequently analysed in Peranso. An inspection
> > of the light curve shows approximately 3 complete superhump cycles, with a
> > 0.3 mag peak-to-trough variation (mag 11.7 to 12.0C). Preliminary ANOVA
> > analysis using the Peranso software indicates a superhump period value of
> > 0.0561 d.
> >
> > Kind regards,
> > Jeremy Shears
> > Bunbury, Cheshire, United Kingdom
> 
> ----- Original Message -----
> From: <Kriebel-Au at t-online.de>
> To: <cvnet-outburst at yahoogroups.com>
> Sent: Sunday, March 20, 2005 10:35 PM
> Subject: [cvnet-outburst] 1RXS J053234.9+624755 very bright!
> 
> > 1RXSJ053234.9+624755  20050320.785  118  KWO  (SXN CHART)
> >
> > Clear skies,
> > Wolfgang Kriebel
> >
> > °°°°°°°°°°°°°°°°°°°°°°°°°
> > Wolfgang Kriebel (KWO)
> > D-84072 Osterwaal/Post Au
> > °°°°°°°°°°°°°°°°°°°°°°°°°
> 
> _______________________________________________
> Aavso-photometry mailing list
> Aavso-photometry at mira.aavso.org
> http://www.aavso.org/mailman/listinfo/aavso-photometry
>