[vsnet-alert 15490] Re: Next HST observation: V485 Cen

[Boris Gaensicke]

Dear All,

this outburst of V485 Cen underlines why your monitoring is
so vital for this project...!

We are quite fortunate that this started quite a few days before
the HST observations,  and we should know soon if it is a
normal one (in which case HST can go ahead).

Please keep a close eye on V485 Cen, and time series
are also very welcome as they will help with the interpretation
of the HST data, should we be able to go ahead on March 16th.

Best wishes,

Boris


On 12 March 2013 07:36, Rod Stubbings <stubbo at sympac.com.au> wrote:
> I have recorded the last three outbursts of V485 Cen as shown below. I have
> been waiting for this one that Arto caught. If it does not get any brighter
> it won't last long going by the recent outbursts.
>
> Regards,
> Rod.
>
>
> CENV485        130117.576   150  Stu.RASNZ outburst
> CENV485        130117.627   150  Stu.RASNZ active
> CENV485        130119.612  <153  Stu.RASNZ
>
> CENV485        130204.519   152  Stu.RASNZ outburst
> CENV485        130205.555  <153  Stu.RASNZ
>
>
> CENV485        130215.557   153  Stu.RASNZ outburst
> CENV485        130216.542  <156  Stu.RASNZ
>
>
> Rod Stubbings,
> Tetoora Observatory,
> Tetoora Road,
> Vic, Australia.
> stubbo at sympac.com.au
> http://rodstubbingsobservatory.wordpress.com/
>
>
>
> ----- Original Message -----
> From: "Boris Gaensicke" <Boris.Gaensicke at warwick.ac.uk>
> To: "Gary Poyner" <garypoyner at blueyonder.co.uk>; "Roger Pickard"
> <roger.pickard at sky.com>; "David Boyd" <davidboyd at orion.me.uk>; "Mike
> Simonsen" <mikesimonsen at aavso.org>; "Elizabeth Waagen" <eowaagen at aavso.org>;
> "Arne Henden" <arne at aavso.org>; "Arto Oksanen" <arto.oksanen at jklsirius.fi>;
> "Bart Staels" <staels.bart.bvba at pandora.be>;
> <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>; "Stuart P Littlefair"
> <s.littlefair at sheffield.ac.uk>; "Rod Stubbings" <stubbo at sympac.com.au>;
> <cba-chat at cbastro.org>; "Joe Patterson" <jop at astro.columbia.edu>
> Sent: Sunday, March 10, 2013 5:15 AM
> Subject: Next HST observation: V485 Cen
>
>
>> Dear All,
>>
>> the double feature on SDSS1035+0551 and SDSS1435+2336
>> went well - your monitoring was again crucial to make this
>> happen! Both systems contain very cool WDs, in fact, they
>> are among the ~4 coolest (non-magnetic) accreting WDs known.
>> We expected that for SDSS1035+0551, but SDSS1435+2336
>> is a bit of a surprise ... and it implies that both have very low
>> average accretion rates.
>>
>> But, no time to relax: V485 Cen is on the schedule, and needs
>> your attention,
>>
>> Mar 16, 2013 03:02:56 to 09:44:57
>>
>> This is one of the handful of extremely short-period CVs near
>> ~60min, which are *not* part of the AM CVn class - but have
>> descended a somewhat peculiar path in evolution, and now
>> accretion from the nuclear processed inner remains of a previously
>> much more massive companion star ... the hope is to get an
>> HST spectrum that is good enough to measure some chemical
>> abundances of the accreted material.
>>
>> Please keep monitoring V485 Cen until the planned HST
>> observations.
>>
>> Best wishes,
>>
>> Boris
>>
>> -----------------------------------------------------------------------------------------------------
>> For more information on this HST program, see
>>
>> http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/
>> http://deneb.astro.warwick.ac.uk/phsdaj/public_html/12870/Targets.html
>>
>>
>>
>> -----
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>> Checked by AVG - www.avg.com
>> Version: 2013.0.2904 / Virus Database: 2641/6160 - Release Date: 03/09/13
>>
>
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2013.0.2904 / Virus Database: 2641/6165 - Release Date: 03/11/13
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>
>