Cometary Dust Trails

Details Cometary Dust Trails Cometary Dust Trails

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop..210f&link_type=abstract

Spitzer Proposal ID #210

Computer Science

Scientific paper

These observations search for large meteroids associated with short-period comets. We selected comets that have perihelion distance less than 3 AU and perihelion date 2002-2004. Images with MIPS or IRAC are made for a region at least 15 arcmin long along the comets' orbits. Spectra are taken, centered on the nucleus, to search for silicate features and measure dust temperature, which allows constrants to be placed on the size and composition of the recently-produced cometary particles as well as the albedo and diameter of the comet nucleus. For comet Encke, we make a spectrum or a region offset from the nucleus along the well-known debris trail. For the comet/asteroid transition object Phaethon, thought to be the parent of the Geminid meteor stream, we image a region along its orbit to see whether it is currently producing large meteoroids.

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