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High precision meteor observations with the Canadian automated meteor observatory: Data reduction pipeline and application to meteoroid mechanical strength measurements
Weryk, Robert J.; Stober, Gunter; Vida, Denis +3 more
Context. The mirror tracking system of the Canadian Automated Meteor Observatory (CAMO) can track meteors in real time, providing an effective angular resolution of 1 arc second and a temporal resolution of 100 frames per second. Aims. We describe the upgraded hardware and give details of the data calibration and reduction pipeline. We investigate…
Estimation of surface temperatures on Mercury in preparation of the MERTIS experiment onboard BepiColombo
Hiesinger, Harald; Helbert, Jörn; Bauch, Karin E. +1 more
The Mercury Radiometer and Thermal Infrared Spectrometer (MERTIS) is part of the payload on the joint ESA-JAXA BepiColombo Mission, launched in October 2018. The spectrometer is designed to map surface composition, identify rock-forming minerals, map surface mineralogy, and study surface temperature variations. The surface of Mercury undergoes lar…
A global investigation of wrinkle ridge formation events; Implications towards the thermal evolution of Mars
Ruj, Trishit; Kawai, Kenji
Wrinkle ridges (WR) are well-established paleo-stress indicators providing information on the compressional history and thermal evolution of Mars. Therefore, constraining their timing of formation on a global scale could yield better insight into the tectonic history, evolution of the mantle, and the paleoclimate of the planet. Here, we have updat…
Photometry of Kuiper belt object (486958) Arrokoth from New Horizons LORRI
Buratti, Bonnie J.; Singer, Kelsi N.; Stern, S. Alan +12 more
On January 1st 2019, the New Horizons spacecraft flew by the classical Kuiper belt object (486958) Arrokoth (provisionally designated 2014 MU69), possibly the most primitive object ever explored by a spacecraft. The I/F of Arrokoth is analyzed and fit with a photometric function that is a linear combination of the Lommel-Seeliger (lunar) and Lambe…
Martian cloud climatology and life cycle extracted from Mars Express OMEGA spectral images
Bibring, Jean-Pierre; Langevin, Yves; Gondet, Brigitte +7 more
A Martian water-ice cloud climatology has been extracted from OMEGA data covering 7 Martian years (MY 26-32) on the dayside. We derived two products, the Reversed Ice Cloud Index (ICIR) and the Percentage of Cloudy Pixels (PCP), indicating the mean cloud thickness and nebulosity over a regular grid (1° longitude × 1° latitude × 1° Ls × 1 h Local T…
Venus upper atmosphere revealed by a GCM: II. Model validation with temperature and density measurements
Lefèvre, Franck; Lebonnois, Sebastien; Schubert, Gerald +5 more
An improved high resolution (96 longitude by 96 latitude points) ground-to-thermosphere version of the Institut Pierre-Simon Laplace (IPSL) Venus General Circulation Model (VGCM), including non-orographic gravity waves (GW) parameterization and fine-tuned non-LTE parameters, is presented here. We focus on the validation of the model built from a c…
The climatology of carbon monoxide on Mars as observed by NOMAD nadir-geometry observations
Vandaele, Ann Carine; Liuzzi, Giuliano; Daerden, Frank +10 more
More than a full Martian year of observations have now been made by the Nadir Occultation for MArs Discovery (NOMAD) instrument suite on-board the ExoMars Trace Gas Orbiter. Radiative transfer modeling of NOMAD observations taken in the nadir geometry enable the seasonal and global-scale variations of carbon monoxide gas in the Martian atmosphere …
NEOExchange - an online portal for NEO and Solar System science
Lister, T. A.; Gomez, E.; Chatelain, J. +4 more
Las Cumbres Observatory (LCO) has deployed a homogeneous telescope network of ten 1-m telescopes to four locations in the northern and southern hemispheres, with a planned network size of twelve 1-m telescopes at 6 locations. This network is very versatile and is designed to respond rapidly to target of opportunity events and also to perform long …
Retrieval of the water ice column and physical properties of water-ice clouds in the martian atmosphere using the OMEGA imaging spectrometer
Bellucci, G.; Forget, F.; Oliva, F. +8 more
Using spectral images recorded by the OMEGA instrument on Mars Express (Observatoire pour la Minéralogie, l'Eau, les Glaces et l'Activité), we are able to derive physical properties of aerosols in water-ice clouds on Mars for a distribution of pixels over an observed cloud formation. These properties, mean effective radius, reff, and op…
Mid-infrared reflectance spectroscopy of synthetic glass analogs for Mercury surface studies
Helbert, Joern; Hiesinger, Harald; Weber, Iris +14 more
We have synthesized and analyzed by mid-infrared reflectance spectroscopy silicate glasses that are representative for the glasses on the surface of Mercury. The glass compositions are based on high-pressure laboratory experiments and the resulting compositions of the glass phase. The spectra are of interest for investigating the surface of Mercur…