activity
20102022
most citedAmmonium salts are a reservoir of nitrogen on a cometary nucleus and possibly on some asteroids

180 citations · 869 across the 22 of their papers we have counts for

collaborators

22 papers

astro-ph.EP2022★ 11 cited

CO2-driven surface changes in the Hapi region on Comet 67P/Churyumov-Gerasimenko

Björn J. R. Davidsson, F. Peter Schloerb, Sonia Fornasier +24

Between 2014 December 31 and 2015 March 17, the OSIRIS cameras on Rosetta documented the growth of a 140m wide and 0.5m deep depression in the Hapi region on Comet 67P/Churyumov-Ge…

astro-ph.EP2022★ 14 cited

Reflectance study of ice and Mars soil simulant associations -- I. HO ice

Zuriñe Yoldi, Antoine Pommerol, Olivier Poch +1

The reflectance of water ice and dust mixtures depends, amongst other parameters, on how the components are mixed (e.g. intimate mixture, areal mixture or coating) (Clark et al. 19…

astro-ph.EP2021★ 4 cited

The fate of icy pebbles undergoing sublimation in protoplanetary discs

Stefano Spadaccia, Holly L. Capelo, Antoine Pommerol +4

Icy pebbles may play an important role in planet formation close to the water ice line of protoplanetary discs. There, dust coagulation is more efficient and re-condensation of vap…

astro-ph.EP2020★ 56 cited

The dust-to-gas ratio, size distribution, and dust fall-back fraction of comet 67P/Churyumov-Gerasimenko: Inferences from linking the optical and dynamical properties of the inner comae

Raphael Marschall, Johannes Markkanen, Selina-Barbara Gerig +3

In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of dust re-deposition, and total mass production rates for co…

astro-ph.EP2020★ 11 cited

Limitations in the determination of surface emission distributions on comets through modelling of observational data -- A case study based on Rosetta observations

Raphael Marschall, Ying Liao, Nicolas Thomas +1

The European Space Agency's (ESA) Rosetta mission has returned a vast data set of measurements of the inner gas coma of comet 67P/Churyumov-Gerasimenko. These measurements have bee…

astro-ph.EP2020★ 180 cited

Ammonium salts are a reservoir of nitrogen on a cometary nucleus and possibly on some asteroids

O. Poch, I. Istiqomah, E. Quirico +29

The measured nitrogen-to-carbon ratio in comets is lower than for the Sun, a discrepancy which could be alleviated if there is an unknown reservoir of nitrogen in comets. The nucle…