8 research outputs found
First results on Martian carbon monoxide from Herschel/HIFI observations
We report on the initial analysis of Herschel/HIFI carbon monoxide (CO)
observations of the Martian atmosphere performed between 11 and 16 April 2010.
We selected the (7-6) rotational transitions of the isotopes ^{13}CO at 771 GHz
and C^{18}O at 768 GHz in order to retrieve the mean vertical profile of
temperature and the mean volume mixing ratio of carbon monoxide. The derived
temperature profile agrees within less than 5 K with general circulation model
(GCM) predictions up to an altitude of 45 km, however, show about 12-15 K lower
values at 60 km. The CO mixing ratio was determined as 980 \pm 150 ppm, in
agreement with the 900 ppm derived from Herschel/SPIRE observations in November
2009.Comment: Accepted for publication in Astronomy and Astrophysics (special issue
on HIFI first results); minor changes to match published versio
Enabling planetary science across light-years. Ariel Definition Study Report
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. During its 4-year mission, Ariel will study what exoplanets are made of, how they formed and how they evolve, by surveying a diverse sample of about 1000 extrasolar planets, simultaneously in visible and infrared wavelengths. It is the first mission dedicated to measuring the chemical composition and thermal structures of hundreds of transiting exoplanets, enabling planetary science far beyond the boundaries of the Solar System. The payload consists of an off-axis Cassegrain telescope (primary mirror 1100 mm x 730 mm ellipse) and two separate instruments (FGS and AIRS) covering simultaneously 0.5-7.8 micron spectral range. The satellite is best placed into an L2 orbit to maximise the thermal stability and the field of regard. The payload module is passively cooled via a series of V-Groove radiators; the detectors for the AIRS are the only items that require active cooling via an active Ne JT cooler. The Ariel payload is developed by a consortium of more than 50 institutes from 16 ESA countries, which include the UK, France, Italy, Belgium, Poland, Spain, Austria, Denmark, Ireland, Portugal, Czech Republic, Hungary, the Netherlands, Sweden, Norway, Estonia, and a NASA contribution
Detection of nitric acid and nitric oxides in the terrestrial atmosphere in the middle-infrared spectral region
Modelling the influence of the emittance of weathered basaltic materials on radiance spectra - related to observations of Valles Marineris region on Mars
Currently developed studies on simulated radiance of the surface and atmosphere of Mars are presented. Laboratory measurements of spectral emissivity of basaltic materials with various particle size ranges and degree of weathering were used in calculations in order to account for real variations as a function of wavelength. The works presented here are directly connected with the spectrometric measurements during Mars Express mission. Our studies can be useful in analysis of geological and mineralogical properties of Valles Marineris region on Mars
Passive Detection of Biological Aerosols in the Atmosphere with a Fourier Transform Instrument (FTIR)—the Results of the Measurements in the Laboratory and in the Field
Ariel: Enabling planetary science across light-years
Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was
adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to
be launched in 2029. During its 4-year mission, Ariel will study what
exoplanets are made of, how they formed and how they evolve, by surveying a
diverse sample of about 1000 extrasolar planets, simultaneously in visible and
infrared wavelengths. It is the first mission dedicated to measuring the
chemical composition and thermal structures of hundreds of transiting
exoplanets, enabling planetary science far beyond the boundaries of the Solar
System. The payload consists of an off-axis Cassegrain telescope (primary
mirror 1100 mm x 730 mm ellipse) and two separate instruments (FGS and AIRS)
covering simultaneously 0.5-7.8 micron spectral range. The satellite is best
placed into an L2 orbit to maximise the thermal stability and the field of
regard. The payload module is passively cooled via a series of V-Groove
radiators; the detectors for the AIRS are the only items that require active
cooling via an active Ne JT cooler. The Ariel payload is developed by a
consortium of more than 50 institutes from 16 ESA countries, which include the
UK, France, Italy, Belgium, Poland, Spain, Austria, Denmark, Ireland, Portugal,
Czech Republic, Hungary, the Netherlands, Sweden, Norway, Estonia, and a NASA
contribution
Ariel: Enabling planetary science across light-years
Ariel Definition Study ReportAriel Definition Study Report, 147 pages. Reviewed by ESA Science Advisory Structure in November 2020. Original document available at: https://www.cosmos.esa.int/documents/1783156/3267291/Ariel_RedBook_Nov2020.pdf/Ariel, the Atmospheric Remote-sensing Infrared Exoplanet Large-survey, was adopted as the fourth medium-class mission in ESA's Cosmic Vision programme to be launched in 2029. During its 4-year mission, Ariel will study what exoplanets are made of, how they formed and how they evolve, by surveying a diverse sample of about 1000 extrasolar planets, simultaneously in visible and infrared wavelengths. It is the first mission dedicated to measuring the chemical composition and thermal structures of hundreds of transiting exoplanets, enabling planetary science far beyond the boundaries of the Solar System. The payload consists of an off-axis Cassegrain telescope (primary mirror 1100 mm x 730 mm ellipse) and two separate instruments (FGS and AIRS) covering simultaneously 0.5-7.8 micron spectral range. The satellite is best placed into an L2 orbit to maximise the thermal stability and the field of regard. The payload module is passively cooled via a series of V-Groove radiators; the detectors for the AIRS are the only items that require active cooling via an active Ne JT cooler. The Ariel payload is developed by a consortium of more than 50 institutes from 16 ESA countries, which include the UK, France, Italy, Belgium, Poland, Spain, Austria, Denmark, Ireland, Portugal, Czech Republic, Hungary, the Netherlands, Sweden, Norway, Estonia, and a NASA contribution