こんな情報が来ています。もしかして14等以下に減光?? 今晩の観測ではいったいどうなっていることでしょう? Date: Thu, 16 Sep 1999 10:31:04 -0700 (MST) From: "R. Mark Wagner" <rmw@as.arizona.edu> Subject: GM Sgr optical observations Dr. Kato: I sent this message to Walter Lewin earlier this morning. Bob Fried reported to me that it faded to about V = 14.3 before clouds intervened in the observations. This would have been Sep 16.167 UT. Have any other observations been received that have confirmed the optical decline? Cheers, Mark Wagner --------------------------------------------------------------------- Dr. R. Mark Wagner Department of Astronomy, The Ohio State University, and Large Binocular Telescope Project, The University of Arizona Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721 URL: http://vela.as.arizona.edu/~rmw/ Email:rmw@as.arizona.edu Phone: (520) 626-3006 Fax: (520) 626-9333 --------------------------------------------------------------------- >From lewin@space.mit.edu Thu Sep 16 08:02:06 1999 Received: from astro.as.arizona.edu (IDENT:root@astro.as.arizona.edu [128.196.208.2]) by vela.as.arizona.edu (8.9.1/8.9.1) with ESMTP id IAA16307 for <rmw@vela.as.arizona.edu>; Thu, 16 Sep 1999 08:02:04 -0700 (MST) Received: from space.mit.edu (SPACE.MIT.EDU [18.75.0.10]) by astro.as.arizona.edu (8.9.3/8.9.3) with ESMTP id IAA14048 for <rmw@as.arizona.edu>; Thu, 16 Sep 1999 08:02:03 -0700 Received: from hoshi.mit.edu (HOSHI.MIT.EDU [18.75.0.238]) by space.mit.edu (8.9.3/csr-2.4) with ESMTP id LAA19358; Thu, 16 Sep 1999 11:01:48 -0400 (EDT) Received: (from lewin@localhost) by hoshi.mit.edu (8.9.3/csr-2.4) id LAA12249; Thu, 16 Sep 1999 11:01:46 -0400 (EDT) Date: Thu, 16 Sep 1999 11:01:46 -0400 (EDT) From: "Walter H.G. Lewin" <lewin@space.mit.edu> Message-ID: <vsolj-alert413@hoge.baba.hajime.jp> To: DIETERS@gibson.msfc.nasa.gov, Shuang.Zhang@msfc.nasa.gov, William.paciesas@msfc.nasa.gov, alan.harmon@msfc.nasa.gov, belloni@merate.mi.astro.it, chryssa.kouveliotou@msfc.nasa.gov, dave@mit.edu, derekfox@space.mit.edu, ehm@space.mit.edu, fwh@rosat.mpe-garching.mpg.de, jcv@ll.iac.es, jgj@xnet.ssl.Berkeley.Edu, jgreiner@aip.de, jmm@space.mit.edu, lewin@space.mit.edu, luisfr@astroscu.unam.mx, mark.finger@msfc.nasa.gov, michiel@astro.uva.nl, mirabel@discovery.saclay.cea.fr, pac@astro.ox.ac.uk, pavlenko@crao.crimea.ua, rmw@as.arizona.edu, rutledge@srl.caltech.edu, shrader@grossc.gsfc.nasa.gov, tanaka@xray.astro.isas.ac.jp, vanparadijs@gibson.msfc.nasa.gov, ytanaka@xray.mpe.mpg.de Content-Length: 1690 >From rmw@vela.as.arizona.edu Thu Sep 16 10:55:08 1999 Return-Path: <rmw@vela.as.arizona.edu> From: "R. Mark Wagner" <rmw@as.arizona.edu> Subject: Re: GM Sgr To: lewin (Walter H.G. Lewin) Date: Thu, 16 Sep 1999 07:55:03 -0700 (MST) Hi Walter, Late yeterday afternoon I asked Bob Fried, who has an 0.4-m telescope and a 1k x 1k CCD, to look at GM Sgr and follow it. He reports to me this morning that he found it at V = 14.3 early last evening AZ time. That would be about 0400 UT on Sep 16. I haven't seen any of the latest VSNET estimates this morning since I am logged on from home and I am about to go up to Kitt Peak for engineering tests. If confirmed it would seem that the optical declined comtemporaneously with the X-rays. It will be facinating to put the optical and X-ray light curves together. I saw visual estimates of around 9th mag on VSNET yesterday. -- Mark