332P/Ikeya-Murakami Archives - Astrobiology

Water ice absorption bands taken on Nov. 2. The normalized spectrum (blue circles) is compared with the best-fit model (red line) and two alternative models in which the ice compositions are amorphous ice at 120 K (dashed lines) and crystalline ice at 80 K (dash-dotted lines). The error bars account for both random and systematic errors. Systematic errors in the JHK bands are estimated band-wise using the standard deviation within the continuum regions of 1.25–1.34, 1.70–1.80, and 2.15–2.45 µm, respectively. -- astro-ph.EP

Astrochemistry, Astrogeology, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Status Report

Optical And Near-Infrared Spectroscopy Of The Outbursting Comet 12P/Pons-Brooks

by Keith CowingJuly 9, 2025July 9, 2025

We present optical and near-infrared (NIR) observations of the outbursting, Halley-type comet 12P/Pons-Brooks.