[vsnet-campaign-dn 15860] Fwd: V627 Peg

Wed Jul 21 00:32:23 JST 2021

 V627 Pegasi (UGWZ)
https://www.aavso.org/vsx/index.php?view=detail.top&oid=241537

Spectroscopy during the current superoutburst is encouraged
(see Christian Knigge's message below).

Clear skies,
Patrick
-------
    ----- Weitergeleitete Nachricht ----- Von: Christian Knigge <c.knigge at soton.ac.uk>An: cba-chat at cbastro.org <cba-chat at cbastro.org>Gesendet: Dienstag, 20. Juli 2021, 16:09:50 MESZBetreff: (cba:chat) V627 Peg
 Hi all,

I hope I'm not intruding here, but I just wanted to flag up that we're 
currently still trying to follow the outburst of V627 Peg -- one of the 
closest WZ Sge stars that erupts only every 5 years (at best) and has 
just recently gone off. I'm involved in a campaign to get X-ray, 
ultraviolet and radio coverage of the outburst, alongside, of course, 
optical.

The thing is really bright in outburst -- V ~ 8-10 or so -- so it's 
great for high-cadence photometry or even spectroscopy, for anybody who 
has a spectrograph. For our campaign, any long sequences would be 
useful. Ideally we'd have long runs covering the full outburst in 2 
filters, say B and V.

In terms of spectra, time-resolved spectroscopy would be awesome -- I'm 
particularly interested in the transition from a pure absorption line 
spectrum near plateau to a pure emission line spectrum in quiescence. 
Where and how fast does this happen, and does it correlate with other 
things happening at other wavelengths.

THanks!

Christian

-- 

===================================================
Professor Christian Knigge
Physics & Astronomy
University of Southampton
Southampton SO17 1BJ
====================================================

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