[vsnet-alert 17165] Re: IR Com outburst?

[Gary Poyner]

I have an unfiltered CCD measure of 17.7C on Mar 27.130 UT, indicating that
the deep low state had ended (or ending?) in late March.

I well remember the 1998 outburst - very short, almost IP type outburst
behaviour.

regards,
Gary


On 7 April 2014 08:36, Boris Gaensicke <Boris.Gaensicke at warwick.ac.uk>wrote:

> Dear All,
>
> CRTS has reported a brightening of IR Com. This short-period
> CV has been in a very long low state, which is usually only
> observed among polars, the strongly magnetic CVs. All evidence
> we have excludes a strong magnetic field on the WD in IR Com,
> which begs the question how it managed to switch off for
> more than 2 years (arXiv:1401.5055v2 <http://arxiv.org/abs/1401.5055v2>).
>
> It's history of IR Com as a dwarf nova is not terribly well
> documented, as far as I know only one outburst has been
> well studied (2002PASJ...54...79K<http://adsabs.harvard.edu/abs/2002PASJ...54...79K>
> ).
>
> Now that IR Com seems to be awakening, it seems a good
> opportunity to give the star some more attention. If this
> current brightening is a proper outburst, time-series
> photometry would be very useful to search for superhumps
> (which were so far never detected).
>
> Best wishes,
>
> Boris Gaensicke
>
>
>
>
>


-- 
------------------------------------------------------
Gary Poyner FRAS
garypoyner at blueyonder.co.uk
http://www.variablestars.co.uk
"You can always tell a Brummie....but you can't tell him much"!