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(meteorobs) [IMO-News] 1997 Leonids results in A&A
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From: =?iso-8859-1?Q?Josep_M=AA_Trigo_i_Rodriguez?= <jmtrigo@ctv.es>
To: "'IMO NEWS'" <imo-news@imodot net>
Cc: "'l-somyce@aagc.dis.ulpgc.es'" <l-somyce@aagc.dis.ulpgc.es>,
=?iso-8859-1?Q?=22=27Jordi_Llorca_Piqu=E9_=28U=2EB=29=27=22?=
<jllorca@kripto.qui.ub.es>,
"'Juli Castellano i Roig (SOMYCE)'" <julioc@comfiadot net>,
"'Juan Fabregat (U.V.)'" <fabregat@evalvx.ific.uv.es>,
"'Dr. Alberto J. Castro Tirado (LAEFF)'" <ajct@laeff.esa.es>,
=?iso-8859-1?Q?=22=27Enric_A=2E_Maci=E0_i_Barber=27=22?=
<macia@valbuena.fis.ucm.es>
Cc: =?iso-8859-1?Q?=22=27Josep_Maria_G=F3mez_=28GEA=29=27=22?=
<jmgomez@gea.cesca.es>
Date: Fri, 24 Mar 2000 14:42:36 +0100
Subject: [IMO-News] 1997 Leonids results in A&A
Dear colleagues,
My paper "The 1997 Leonid outburst" has been just published in the last =
volume of Astronomy & Astrophysics 355 (2000), pp.1160-1163. In the next =
days it will be available in pdf format at the address:
http://link.springerdot de/link/service/journals/00230/papers/0355003/
I've enclosed below the abstract of this work, an attempt to obtain =
additional information on the 1997 Leonid outburst in basis to visual =
and photographic data obtained by members of our team and also using the =
IMO VMDB provided me by Rainer Arlt. I think the result it's an example =
of the valuable role taken by IMO amateur observers in this field. Many =
thanks to all the contributors!
THE 1997 LEONID OUTBURST=20
Abstract: In November 1997 a shower of bright Leonid meteors was=20
observed from Spain. The visual and photographic measurements of the =
Zenital=20
Hourly Rates (ZHRs) and the respective spatial number densities together =
with the=20
meteor distribution characteristics indicate the existence of a broad =
component rich=20
in large grains prior to the perihelion passage of P/Tempel-Tuttle =
comet. This dust=20
component may be responsible for similar outbursts in previous =
appearances.=20
However, the Lunar conditions impedeed in 1997 obtaining conclusive =
evidence of=20
the presence of a component of small meteoroids from more recent ejecta, =
really=20
responsible for past meteor storms. After comparing 1997 peak data with =
1965=20
data, a very close pattern is detected that supports the presence of =
future storms.
*******************************************************************
Josep Ma. Trigo i Rodriguez=20
SPANISH PHOTOGRAPHIC METEOR NETWORK (SPMN)
- -Dept. Astronomy & Astrophysics, Universitat de Val=E8ncia =
=20
- -Dept. Experimental Sciences, Universitat Jaume I=20
E-mails: jmtrigo@ctv.es / trigo@exp.uji.es
Network homepage: http://www.spmn.uji.es/
Phones: (+Spain Code 34) 964 - 282584 / 282968 (office)=20
(964) 395064 (part.) Fax: 964 - 285161
Postal address: c/ Manuel de Falla 26,=20
12.560 Benicassim (Castello) SPAIN
*******************************************************************=20
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