[vsnet-alert 17167] Re: IR Com outburst?

[szkody at astro.washington.edu]

Sounds like it might be an IP - see our article in 1988 PASP, 100, 1522
about our Harvard plate file study to find low states in IPs...
Cheers, Paula

On Mon, 7 Apr 2014, Gary Poyner wrote:

> 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"!
>