94 citations · 447 across the 20 of their papers we have counts for
21 papers
Watching a Comet Turn On: High Spectral Resolving Power Observations of Comet C/2017 K2 (PanSTARRS)
Anita L. Cochran, Adam J. McKay, Youssef Moulane
We report high spectral resolving power optical observations of comet C/2017\,K2 (PanSTARRS) as it approached the Sun. This comet was discovered when it was 16\,{\sc au} from the S…
Variations in Volatile-Driven Activity of Comet C/2017 K2 (PanSTARRS) Revealed by Long-Term Multi-Wavelength Observations
S. Hmiddouch, E. Jehin, M. Lippi +7
Context. A comprehensive study of comets over a wide heliocentric distance range helps us understand the physical processes driving their activity and reveals compositional differe…
A portrait throughout perihelion of the NH-rich interstellar comet 2I/Borisov
Sophie E. Deam, Michele T. Bannister, Cyrielle Opitom +12
The interstellar comet 2I/Borisov is the first interstellar object where compositional characterisation was possible throughout its entire perihelion passage. We report all 16 epoc…
NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)
Colin Orion Chandler, Pedro H. Bernardinelli, Mario Jurić +305
We report on the observation and measurement of astrometry, photometry, morphology, and activityof the interstellar object 3I/ATLAS, also designated C/2025 N1 (ATLAS) with the NSF-…
A Large Outburst, Coma Asymmetries, and the Color of Comet 243P/NEAT
Michael S. P. Kelley, Silvia Protopapa, Dennis Bodewits +16
Water ice is a fundamental building material of comets and other bodies in the outer solar system. Yet, the properties of cometary water ice are challenging to study, due to its vo…
Long-term spectroscopic monitoring of comet 46P/Wirtanen
K. Aravind, Kumar Venkataramani, Shashikiran Ganesh +2
Jupiter Family Comets (JFCs), having orbital period less than 20 years, provide us with an opportunity to observe their activity and analyse the homogeneity in their coma compositi…
Activity and composition of the hyperactive comet 46P/Wirtanen during its close approach in 2018
Y. Moulane, E. Jehin, J. Manfroid +10
Hyperactive comets are a small group of comets whose activity are higher than expected. They seem to emit more water than they should based on the size of their nucleus and comet 4…
The LCO Outbursting Objects Key Project: Overview and Year 1 Status
Tim Lister, Michael S. P. Kelley, Carrie E. Holt +32
The LCO Outbursting Objects Key (LOOK) Project uses the telescopes of the Las Cumbres Observatory (LCO) Network to: (1) to systematically monitor a sample of Dynamically New Comets…
FeI and NiI in cometary atmospheres. Connections between the NiI/FeI abundance ratio and chemical characteristics of Jupiter-family and Oort-cloud comets
Damien Hutsemékers, Jean Manfroid, Emmanuel Jehin +2
FeI and NiI emission lines have recently been found in the spectra of 17 Solar System comets observed at heliocentric distances between 0.68 and 3.25 au and in the interstellar com…
(6478) Gault: Physical characterization of an active main-belt asteroid
Maxime Devogèle, Marin Ferrais, Emmanuel Jehin +22
In December 2018, the main-belt asteroid (6478)~Gault was reported to display activity. Gault is an asteroid belonging to the Phocaea dynamical family and was not previously known…
Photometry and high-resolution spectroscopy of comet 21P/Giacobini-Zinner during its 2018 apparition
Y. Moulane, E. Jehin, P. Rousselot +7
We report on photometry and high resolution spectroscopy of the chemically peculiar Jupiter-family Comet (hereafter JFC) 21P/Giacobini-Zinner. Comet 21P is a well known member of t…
Interstellar comet 2I/Borisov as seen by MUSE: C, NH and red CN detections
Michele T. Bannister, Cyrielle Opitom, Alan Fitzsimmons +11
We report the clear detection of C and of abundant NH in the first prominently active interstellar comet, 2I/Borisov. We observed 2I on three nights in November 2019 at opt…
2I/Borisov: A C depleted interstellar comet
C. Opitom, A. Fitzsimmons, E. Jehin +9
The discovery of the first active interstellar object 2I/Borisov provides an unprecedented opportunity to study planetary formation processes in another planetary system. In partic…
Detection of CN gas in Interstellar Object 2I/Borisov
Alan Fitzsimmons, Olivier Hainaut, Karen Meech +8
The detection of Interstellar Objects passing through the Solar System offers the promise of constraining the physical and chemical processes involved in planetary formation in oth…
Comet 66P/du Toit: not a near Earth main belt comet
B. Yang, E. Jehin, F. J. Pozuelos +6
Main belt comets (MBCs) are a peculiar class of volatile-containing objects with comet-like morphology and asteroid-like orbits. However, MBCs are challenging targets to study remo…
Dust Properties of Double-Tailed Active Asteroid (6478) Gault
F. Moreno, E. Jehin, J. Licandro +11
Asteroid (6478) Gault was discovered to exhibit a comet-like tail in observations from December 2018, becoming a new member of the so-called active asteroid population in the main…
Pluto's lower atmosphere and pressure evolution from ground-based stellar occultations, 1988-2016
E. Meza, B. Sicardy, M. Assafin +167
Context. Pluto's tenuous nitrogen (N2) atmosphere undergoes strong seasonal effects due to high obliquity and orbital eccentricity, and has been recently (July 2015) observed by th…
High resolution optical spectroscopy of the -rich comet C/2016 R2 (PanSTARRS)
C. Opitom, D. Hutsemékers, E. Jehin +6
Early observations of comet C/2016 R2 (PanSTARRS) have shown that the composition of this comet is very peculiar. We obtained high resolution spectra of the comet in February when…
Monitoring of the activity and composition of comets 41P/Tuttle-Giacobini-Kresak and 45P/Honda-Mrkos-Pajdusakova
Y. Moulane, E. Jehin, C. Opitom +5
We report on photometry and imaging of the Jupiter Family Comets 41P/Tuttle-Giacobini-Kresak and 45P/Honda-Mrkos-Pajdusakova with the TRAPPIST-North telescope. We observed 41P on 3…
Reactive collision of electrons with CO in cometary coma
Y. Moulane, J. Zs. Mezei, V. Laporta +3
In order to improve our understanding of the kinetics of the cometary coma, theoretical studies of the major reactive collisions in these environments are needed. Deep in the colli…
Dust modelling and a dynamical study of comet 41P/Tuttle-Giacobini-Kresak during its 2017 perihelion passage
F. J. Pozuelos, E. Jehin, Y. Moulane +4
Thanks to the Rosetta mission, our understanding of comets has greatly improved. A very good opportunity to apply this knowledge appeared in early 2017 with the appearance of the J…