Kreutz Sungrazing Comets Discovered with the SOHO/LASCO Coronagraphs

Details Kreutz Sungrazing Comets Discovered with the SOHO/LASCO Coronagraphs Kreutz Sungrazing Comets Discovered with the SOHO/LASCO Coronagraphs

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004dps....36.3410k&link_type=abstract

American Astronomical Society, DPS meeting #36, #34.10; Bulletin of the American Astronomical Society, Vol. 36, p.1150

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a study of the lightcurves of the first 300 Kreutz comets discovered by the SOHO/LASCO coronagraphs. This work is an update to the analysis performed by Biesecker et al. (2002), which covered the first 141 Kreutz family comets discovered from 1996 to 1998. We consider the effects of aperture size, aperture shape, and background subtraction on the observed counts to determine the best method to be applied uniformly to all the Kreutz comets discovered by SOHO/LASCO (currently more than 800). Using these optimized techniques we recompute the lightcurves of Biesecker et al.'s original sample and extend this to an additional 160 comets. Finally, we reevaluate Biesecker et al.'s observation of a bimodal distribution in the heliocentric distance of the peaks of the lightcurves using the larger sample.
This work is supported by the NASA Planetary Atmospheres Program under grant NAG513295.

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