[vsnet-alert 3081] (fwd) An ASCA Observation of Nova Vel 1999

[Daisaku Nogami <nogami@kusastro.kyoto-u.ac.jp>]

 Date: Sun, 6 Jun 1999 16:33:54 -0400
 From: "Koji Mukai, US ASCA/ASTRO-E GOF, 301-286-9447" <MUKAI@lheavx.gsfc.nasa.gov>
 Subject: An ASCA Observation of Nova Vel 1999

Dear Colleagues,

I have managed to secure a target-of-opportunity observation of
Nova Vel 1999 with ASCA; it is scheduled for June 09 14:30 UT -
June 10 16:00 UT.  We hope to detect the early X-ray emission
which has been seen in Nova Her 1991 and others; with such a
bright nova, combined with the sensitivity of ASCA, we should
be able to provide the best data yet of the early X-ray emission
from a classical nova.

While the success or otherwise of the ASCA observation does not
depend directly on coordinated observations, it will obviously
be useful to have contemporaneous optical and IR observations ---
particularly spectroscopy --- to probe the nova ejecta at multiple
wavelengths.  Nova Vel 1999 is the brightest nova in over 20 years,
and so I'm sure many observations are being undertaken anyway.
Even so, I would like to encourage as many observers to study this
nova over the next week or two.

Please feel free to forward this message in whole or in part to
anybody who may be interested.

				Best wishes,

					Koji Mukai

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