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LEONID DAILY NEWS: November 22, 2001

Flux rates

Leonid optical spectra.


Leonid MAC participants have much to be thankful for on this Thanksgiving day. A first inspection of the high resolution optical spectroscopy conducted by former Ames Astrobiology Academy student Emily Schaller of Dartmouth College during the 2001 Leonid MAC mission, shows an abundance of Leonid spectra of a quality never seen before. 23 spectra and 54 meteors were recorded. The reproductions to the left do not do justice to the hundreds of emission lines visible in the original data. Half of the spectra are the garden variety form, with characteristic lines of oxygen and nitrogen, but many others show yet unidentified emission lines and molecular bands. These data will be used to study the temperature of the meteoric plasma and the abundance of small fragments of organic molecules. Schaller used a slit-less CCD spectrometer of Leonid MAC PI Dr. Peter Jenniskens. We are thankful to all that made this Astrobiology mission a success.

flyer for 2001/2002 missions

Previous news items:
Nov 22 - Wowh! Optical meteor spectra
Dec. 25 - Ursid shower circular IMO
Dec. 24 - Ursid shows early release of sodium
Dec. 23 - Ursid outburst confirmed
Dec. 18 - Dec 22 Ursid outburst
Nov. 20 - A bacterial fingerprint?
Nov. 15 - HCN disappears mysteriously
Nov. 14 - Meteor shower from space
Nov. 13 - Organic fingerprint
Nov. 12 - Train airglow chemistry
Nov. 11 - Hard bits and persisting glows
Nov. 10 - Meteoroid debris detected
Nov. 09 - New meteor picture
Nov. 08 - Spin city
Nov. 07 - Meteors affect atmospheric chemistry
Nov. 06 - Listen to this!
Nov. 04 - Fear of heights?
Nov. 03 - The pale (infra-red) dot
Nov. 02 - Twin showers
Nov. 01 - Leonids approaching Earth
Oct. 31 - Prospects for Moon Impact Studies
Oct. 30 - Comet dust crumbled less fine
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Results of this work were published in the Astrobiology Journal.

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