Color variations of comet 29P/Schwassmann-Wachmann 1 in 2018
Authors:
A. Voitko, E. Zubko, O. Ivanova, I. Luk’yanyk, A. Kochergin, M. Husarik, G. Videen
Image & caption:
Please click on image thumbnail to get more info:
Image caption::
Color slope of comet 29P/Schwassmann–Wachmann 1. Numbers correspond to the day of the month. The red dashed line in the bottom panel shows the average color slope for all 9 epochs, S′ = 6.1% per 0.1 μm.
Description:
In our work, we have described the results of observations of comet 29P/Schwassmann-Wachmann 1 and performed their modeling to obtain the microphysical properties of the dust particles. The observations were performed using the 61-cm telescope on the Skalnaté Pleso observatory of the SAS taken in August-October 2018. In October, we saw the comet right after an outburst with a slight brightness increase and the blue color of dust, contrary to the August observations. Moments of color extremes were modeled. We have obtained that the particles in August and October had similar sizes, but their chemical composition was different. In August, the coma contained mainly Fe-Mg silicate and organic particles. In October, there were water-ice and Mg-rich particles in the coma.
SK
SAS
