Explanipedia

Biases on the retrieval of aerosols' properties from VIS-NIR data: the NOMAD case study Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, F. G. Carrozzo, Ian Thomas , et al. · 2025

Data acquired by spaceborne spectrometers operating in the visual (VIS) and near-infrared (NIR) spectral ranges, are commonly exploited to derive the microphysical properties of planetary atmospheric aerosols (e.g. Adriani et al., 2015; Si…

A focus on Chemical Equilibria of Saline Aqueous Solutions Freezing under Ceres’ Surface Open

Maria Pedone, Edoardo Rognini, E. Ammannito, Christina Plainaki, M. C. De Sanctis , et al. · 2024

On Ceres’ surface, the region including Kupalo and Juling was selected, in this study, for the geological aspects characterizing the area. Spectral data revealed that, at surface, the two craters show the presence of different carbonates: …

Evidence for transient morning water frost deposits on the Tharsis volcanoes of Mars Open

Adomas Valantinas, N. Thomas, A. Pommerol, Özgür Karatekin, Luca Ruiz Lozano , et al. · 2024

Ammonium-rich bright areas on Ceres demonstrate complex chemical activity Open

M. C. De Sanctis, E. Ammannito, F. G. Carrozzo, M. Ciarniello, Simone De Angelis , et al. · 2024

The dwarf planet Ceres has been proven to be a world with an extraordinary diversity of chemical species formed in aqueous environments. Dantu crater, being one of the largest and deepest impact craters on Ceres, offers valuable insights i…

Minimum Noise Fraction Analysis of TGO/NOMAD LNO Channel High-Resolution Nadir Spectra of Mars Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, F. G. Carrozzo, Luca Ruiz Lozano , et al. · 2023

NOMAD is a suite of spectrometers on the board of the ESA-Roscosmos Trace Gas Orbiter (TGO) spacecraft and is capable of investigating the Martian environment at very high spectral resolution in the ultraviolet–visible and infrared spectra…

Search for carbonaceous chondrites evidence on Vesta through the detection of carbonates Open

Giuseppe Massa, E. Palomba, A. Longobardo, Marianna Angrisani, C. Gisellu , et al. · 2023

Observation of the Southern Polar cap during MY34-36 with ExoMars-TGO NOMAD LNO Open

Luca Ruiz Lozano, Fabrizio Oliva, Özgür Karatekin, G. Bellucci, V. Dehant , et al. · 2023

Pyroxene and Hydroxyl Signatures in Vesta Newly Calibrated Data from Dawn Mission Open

Giuseppe Massa, A. Longobardo, E. Palomba, Marianna Angrisani, Chiara Gisellu , et al. · 2023

Thanks to the VIR spectrometer onboard NASA’s Dawn spacecraft, which orbited Vesta in 2011–2012, thousands of hyperspectral images of its surface have been collected. The mission confirmed the HED (Howardite–Eucrite–Diogenite) meteorite co…

Ceres as seen by VIR/ Dawn: spectral modeling and laboratory measurements suggest altered and pristine silicates within carbon chemistry Open

A. Raponi, Marco Ferrari, M. C. De Sanctis, E. Ammannito, M. Ciarniello , et al. · 2023

The NASA/Dawn mission has acquired an unprecedented amount of data from the surface of the dwarf planet Ceres, providing a thorough characterization of its surface composition. The current favorite compositional model includes a mixture of…

Minimum Noise Fraction analysis of ExoMars/TGO-NOMAD LNO channel nadir data: SNR enhancement and application Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, F. G. Carrozzo, Luca Ruiz Lozano , et al. · 2022

The Nadir and Occultation for MArs Discovery (NOMAD, Neefs et al., 2015) instrument suite on board the Exomars Trace Gas Orbiter (TGO) spacecraft is capable to observe the Martian atmosphere at high spectral resolution with differ…

MINERALOGY OF THE SURFACE OF CERES FROM 1 µm ABSORPTION Open

F. G. Carrozzo, M. C. De Sanctis, A. Raponi, M. Ciarniello, E. Ammannito , et al. · 2022

Introduction: Various minerals have been detected on Ceres and their abundance and spatial distribution has been mapped in the near infrared spectral domain [i.e. 1, 2]. In this work we study the 1 &am…

Evaluation of the capability of ExoMars-TGO NOMAD infrared nadir channel for water ice clouds detection on Mars Open

Luca Ruiz Lozano, Özgür Karatekin, V. Dehant, G. Bellucci, Fabrizio Oliva , et al. · 2022

The Nadir and Occultation for Mars Discovery (NOMAD) is one of the four instruments on board the 2016 ExoMars Trace Gas Orbiter. The instrument is a suite of three spectrometers, mainly designed to study minor atmospheric species …

Evaluation of the Capability of ExoMars-TGO NOMAD Infrared Nadir Channel for Water Ice Clouds Detection on Mars Open

Luca Ruiz Lozano, Özgür Karatekin, V. Dehant, G. Bellucci, Fabrizio Oliva , et al. · 2022

As part of the payload of the 2016 ExoMars Trace Gas Orbiter (TGO) mission, the Nadir and Occultation for MArs Discovery (NOMAD) suite instrument has been observing the Martian atmosphere since March 2018. NOMAD is mainly dedicated to the …

Spectral Analysis of Ceres’ Main Linear Features Open

A. Longobardo, F. G. Carrozzo, A. Galiano, J. E. C. Scully, Rutu Parekh , et al. · 2022

Linear features are very common on asteroid surfaces. They are generally formed after impact and provide information about asteroid evolution. This work focuses on a mineralogical and spectral analysis of the main linear features on the 1/…

Martian CO2 Ice Observation at High Spectral Resolution With ExoMars/TGO NOMAD Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, F. G. Carrozzo, Luca Ruiz Lozano , et al. · 2022

The Nadir and Occultation for MArs Discovery (NOMAD) instrument suite aboard ExoMars/Trace Gas Orbiter spacecraft is mainly conceived for the study of minor atmospheric species, but it also offers the opportunity to investigate surface com…

Vertical distribution of dust in the martian atmosphere: OMEGA/MEx limb observations Open

E. D’Aversa, Fabrizio Oliva, Francesca Altieri, Giuseppe Sindoni, F. G. Carrozzo , et al. · 2021

The surface of (4) Vesta in visible light as seen by Dawn/VIR Open

Batiste Rousseau, M. C. De Sanctis, A. Raponi, M. Ciarniello, E. Ammannito , et al. · 2021

Aims. We analyzed the surface of Vesta at visible wavelengths, using the data of the Visible and InfraRed mapping spectrometer (VIR) on board the Dawn spacecraft. We mapped the variations of various spectral parameters on the entire surfac…

Mineralogical implications for the 1-micron feature in the refined average spectrum of Ceres Open

Marco Ferrari, A. Raponi, M. C. De Sanctis, E. Ammannito, M. Ciarniello , et al. · 2021

Introduction: The Dawn NASA mission investigated Ceres with its payload, including the Visual (0.25–1 μm) and InfraRed (1–5 μm) mapping spectrometer (VIR) [1].The first findings from the VIR-IR channel confirmed some …

Dawn/VIR at Vesta: lithological inference from the visible data Open

Batiste Rousseau, M. C. De Sanctis, A. Raponi, M. Ciarniello, E. Ammannito , et al. · 2021

The NASA Dawn mission orbited Vesta between July 2011 and September 2012. The VIR imaging spectrometer(1) obtained a nearly global mapping of its surface in the visible (0.25-1µm) and infrared wavelengths (1-5µm).The VIR data acq…

Mars dust microphysical properties retrieval through TGO/NOMAD UVIS and LNO channels combined nadir datasets analysis Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, F. G. Carrozzo, Özgür Karatekin , et al. · 2021

In this work we analyze ExoMars/TGO NOMAD spectrometer [1] nadir data. We exploit both the ultraviolet-visible UVIS channel and the infrared LNO channel to obtain information about Martian dust densities and grains sizes. For the analysis …

Ice clouds detection with NOMAD-LNO onboard ExoMars Trace Gas Orbiter Open

Luca Ruiz Lozano, Özgür Karatekin, V. Dehant, G. Bellucci, Fabrizio Oliva , et al. · 2021

This work takes advantage of the NOMAD spectrometer observations, on board the 2016 ExoMars Trace Gas Orbiter. ExoMars is an ESA-Roscosmos joint mission consisting of a rover and an orbiter (Trace Gas Orbiter - TGO). The Nadir and…

Organic Material on Ceres: Insights from Visible and Infrared Space Observations Open

A. Raponi, M. C. De Sanctis, F. G. Carrozzo, M. Ciarniello, Batiste Rousseau , et al. · 2020

The NASA/Dawn mission has acquired unprecedented measurements of the surface of the dwarf planet Ceres, the composition of which is a mixture of ultra-carbonaceous material, phyllosilicates, carbonates, organics, Fe-oxides, and volatiles a…

Dawn/VIR at Vesta: correction of the spectral variations induced by CDD temperature change on the visible channel Open

Batiste Rousseau, M. C. De Sanctis, M. Ciarniello, A. Raponi, Pietro Scarica , et al. · 2020

From July 2011 to September 2012, the Dawn spacecraft orbited the large asteroid (4) Vesta. A nearly global coverage of the surface was achieved by the Visible and InfraRed mapping spectrometer (VIR) [1]. The change of CCD temperature duri…

Dawn/VIR at Ceres: Visible spectral properties of the surface Open

Batiste Rousseau, M. C. De Sanctis, A. Raponi, M. Ciarniello, E. Ammannito , et al. · 2020

The Dawn spacecraft orbited the dwarf planet (1) Ceres from March 2015 to October 2018. This allowed the Visible InfraRed spectrometer (VIR) [1] to achieve a nearly global hyperspectral mapping of the surface. Here we present, through seve…

Mars dust properties by means of TGO/NOMAD UVIS and LNO channels nadir data analysis Open

Fabrizio Oliva, E. D’Aversa, G. Bellucci, Francesca Altieri, F. G. Carrozzo , et al. · 2020

Here we analyse nadir data from both the UVIS and LNO channels of the NOMAD spectrometer [1], onboard ExoMars/TGO, to obtain information about Martian dust densities and grains sizes. The combined dataset is analyzed with the MITRA radiati…

Ice-hunting in the South Polar Terrains of Ceres Open

A. Frigeri, M. C. De Sanctis, E. Ammannito, A. Raponi, M. Ciarniello , et al. · 2020

Like the Moon and Mercury, Ceres’s rotation axis is inclined by just a few degrees. The obliquity of 4 degrees between the normal to the orbital plane and the rotational axis of Ceres implies that Ceres' poles terrains are alw…

Ceres observed at low phase angles by VIR-Dawn Open

M. Ciarniello, M. C. De Sanctis, A. Raponi, Batiste Rousseau, A. Longobardo , et al. · 2019

Context. Particulate surfaces exhibit a surge of reflectance at low phase angles, a phenomenon referred to as the opposition effect (OE). Two mechanisms are recognized as responsible for the OE: shadow hiding (SH) and coherent backscatteri…

Correction of the VIR-visible data set from the Dawn mission Open

Batiste Rousseau, A. Raponi, M. Ciarniello, E. Ammannito, F. G. Carrozzo , et al. · 2019

Data acquired at Ceres by the visible channel of the Visible and InfraRed mapping spectrometer (VIR) on board the NASA Dawn spacecraft are affected by the temperatures of both the visible (VIS) and the infrared (IR) sensors, which are, res…

Detection of Crystalline and Fine-grained Calcic Plagioclases on Vesta Open

E. Palomba, E. D’Aversa, Takao M. Sato, A. Longobardo, Fabrizio Dirri , et al. · 2019

Plagioclase feldspars are among the most prevalent minerals in the solar system, and are present in many chondritic and achondritic meteorite families. Nevertheless, spectral features of plagioclases have never been unambiguously and direc…

Temperature and emissivity of specific regions of interest on Ceres Open

F. Tosi, M. T. Capria, Edoardo Rognini, M. C. De Sanctis, V. Formisano , et al. · 2018

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