Skip to main content
SearchLoginLogin or Signup

JWST and Comet C/2017 K2 (PanSTARRS)

Presentation #322.01 in the session Comets (Poster + Lightning Talk)

Published onOct 23, 2023
JWST and Comet C/2017 K2 (PanSTARRS)

As comets journey into the inner solar system, they deliver particulates and volatile gases into their comae that reveal the most primitive materials in the solar system. Cometary dust particles provide crucial information for assessing the physico-chemical conditions in the outer disk from which they formed. Compared to the volatiles and soluble organics, the refractory dust particles are more robust and may be traceable to other small bodies. Here we report results of our JWST study of comet C/2017 K2 (PanSTARRS) near a heliocentric distance of 2.03 au, pre-perihelion. We discuss the analysis of both NIRSpec IFU (2.9-5.3 μm, λ/Δλ~1000) and MIRI IFU (4.9-28.1 μm, λ/Δλ~3000) data sets, including numerous molecular and gas phase emission features as well as the analysis of coma dust constituents derived from thermal model analysis of the spectral energy distributions. Also highlighted is the spatial distribution of major gases (H2O, CO2, and CO) derived from the JWST spectral cubes. Properties of comet C/2017 K2 (PanSTARRS) will be contrasted to other comets observed with JWST, as well as a broad ensemble of comets studied with Spitzer. How insights gained from solar system comet investigations impact our understanding of protoplanetary disk processes will be presented.

This work is based in part on observations made with the NASA/ESA/CSA James Webb Space Telescope. The data were obtained from the Mikulski Archive for Space Telescopes at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127 for JWST. These observations are associated with program #1566. Support for program #1566 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-03127.

Comments
0
comment
No comments here