From weaver@pha.jhu.edu Mon Dec 10 16:33:49 2001 -0500 Status: R X-Status: X-Keywords: Date: Mon, 10 Dec 2001 16:33:49 -0500 (EST) From: Hal Weaver X-X-Sender: To: =?X-UNKNOWN?Q?Teemu_M=E4kinen?= cc: Mike Mumma , , , , , , , Nicolas Biver , , , Mike A'Hearn , Claude Arpigny , Mike Combi , Paul Feldman , Michel Festou , Gian Paolo Tozzi , Nicolas Biver , Tim Brooke , Gordon Chin , John Davies , Dominique Bockelee-Morvan , Jacques Crovisier , Sang Kim Subject: Re: Recent SWAN QH2O estimates for WM1 In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Hi, Hello again, Adopting a radial outflow model with v(CS2)=v(CS)=0.76 km/sec, I get the following results for the HST CS observations on Dec 8th (2-3 UTC): Q(CS2) = 4.7e25 for tau(CS2)=500 sec at r=1 AU Q(CS2) = 7.8e25 for tau(CS2)=1000 sec at r=1 AU Using Q(H2O)=8e28 implies: CS2/H2O = 5.9e-04 for tau=500 sec CS2/H2O = 9.8e-04 for tau=1000 sec The above CS results were determined for a 0.5" x 0.5" aperture. More accurate results will be obtained following analysis of the CS spatial brightness profile. For comparison, Nicolas Biver reports for Dec 8th UTC: Q(CS2) = 2.8e25 and Q(HCN) = 3.4e25 but I don't know what model parameters he assumed. Cheers, Hal --------------------------------------------------------------------- Harold A. Weaver email: weaver@pha.jhu.edu Dept. of Physics and Astronomy tel: +1 410 516 4251 Johns Hopkins University fax: +1 410 516 8260 3400 N. Charles St. URL: http://www.pha.jhu.edu/~weaver Baltimore, MD 21218 ---------------------------------------------------------------------