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[vsnet-chat 2909] Re: Brief IP outbursts
- Date: Mon, 8 May 2000 11:42:04 +0100 (BST)
- To: William S G Walker <astroman@voyager.co.nz>
- From: Alon Retter <ar@astro.keele.ac.uk>
- Subject: [vsnet-chat 2909] Re: Brief IP outbursts
- cc: Patrick Schmeer <p.schmeer@mx.uni-saarland.de>, vsnet-chat@kusastro.kyoto-u.ac.jp, Patrick Schmeer <extpasc@rz.uni-sb.de>
- In-Reply-To: <200005062207.KAA29931@callisto.net.voyager.co.nz>
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
Dear Stan,
The spin period of TV Col was initially discovered from the X-ray.
Optical data usually don't show it. Yet, we have found a weak evidence
for its existence in an excellent old run (6 successive long nights -
~7 hr each, clear filter, 1-m telescope) carried out in 1989 when the
star was in its quiescence state. The full amplitude of the variation
was ~0.03 mag, so I don't expect that amateurs will be able to detect
it. In addition, in outbursts, I believe that it might be even more
difficult to observe it due to the noise. The bright disc should then
obscure its inner parts.
Regards,
Alon
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Dr. Alon Retter Tl. (work) +44-(0)1782-58-3493
Physics Dept. Fax (work) +44-(0)1782-711093
Keele University -----------------------------------
Staffordshire 'As a scientist I don't believe myself, so
ST5 5BG, U.K. why should I believe you?' (A.R. 1965-2085)
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