[en] We obtained medium-resolution and high-resolution spectra of the near-Earth Jupiter family comet (JFC) 66P/du Toit from 300 to 2500 nm with X-shooter/VLT and UVES/VLT on 2018 July 01, 07 and 13, respectively. In addition, we obtained a series of narrow-band images of 66P between 2018 May and July with TRAPPIST-South. Comet 66P is one of the weakly active JFCs that were identified by Fernandez & Sosa (2015) as having the highest probability of coming from the Main Belt. Our main goal is to investigate the composition of this comet via measuring the gaseous species in the UV and visible and to study its dust properties via measuring the continuum over a broad wavelength range. Additionally, we aim to measure the ortho-to-para abundance ratio of NH2 to constrain the formation conditions of this comet. I will present our spectroscopic observations as well as the photometric observations of 66P. I will discuss whether this comet shows any clear difference in terms of its volatile profile or its dust profile compared to other typical JFCs.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Yang, Bin; European Southern Observatory, Santiago, CHILE) AB(European Southern Observatory, Santiago, CHILE) AC(Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, BELGIUM) AD(Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, BELGIUM) AE(Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, BELGIUM) AF(Institut d'Astrophysique et de Geophysique, Universite de Liege, Liege, BELGIUM) AG(Planetary Science Institute, Tucson, Arizona, UNITED STATES)
Opitom, Cyrielle
Jehin, Emmanuel ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Hutsemekers, Damien ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
