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Proceedings Paper

Preparing EChO space mission: laboratory simulation of planetary atmospheres
Author(s): Riccardo U. Claudi; Marco Sergio Erculiani; Giuseppina Micela; Maurizio D'Alessandro; Giuseppe Galletta; Enrico Giro; Alberto Adriani; Francesca Altieri; Giancarlo Bellucci; Daniela Billi; Cesare Cecchi-Pestellini; Angela Ciaravella; Gianrico Filacchione; Gabriella Gilli; Marco Giuranna; Davide Grassi; Giuseppe Leto; Emanuele Pace; Maria Elisabetta Palumbo; Giuseppe Piccioni; Salvatore Scuderi; Giovanni Strazzulla; Diego Turrini
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Paper Abstract

Space missions, as EChO, or ground based experiments, as SPHERE, have been proposed to measure the atmospheric transmission, reflection and emission spectra. In particular, EChO is foreseen to probe exoplanetary atmospheres over a wavelength range from 0.4 to 16 micron by measuring the combined spectra of the star, its transmission through the planet atmosphere and the emission of the planet. The planet atmosphere characteristics and possible biosignatures will be inferred by studying such composite spectrum in order to identify the emission/absorption lines/bands from atmospheric molecules such as water (H2O), carbon monoxide (CO), methane (CH4), ammonia (NH3) etc. The interpretation of the future EChO observations depends upon the understanding of how the planet atmosphere affects the stellar spectrum and how this last affects the planet emission/absorption. In particular, it is important to know in detail the optical characteristics of gases in the typical physical conditions of the planetary atmospheres and how those characteristics could be affected by radiation induced phenomena such as photochemical and biological one. Insights in this direction can be achieved from laboratory studies of simulated planetary atmosphere of different pressure and temperature conditions under the effects of radiation sources, used as proxies of different bands of the stellar emission.

Paper Details

Date Published: 28 August 2014
PDF: 11 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91432U (28 August 2014); doi: 10.1117/12.2055115
Show Author Affiliations
Riccardo U. Claudi, INAF - Osservatorio Astronomico di Padova (Italy)
Marco Sergio Erculiani, CISAS - Univ. degli Studi di Padova (Italy)
INAF - Osservatorio Astronomico di Padova (Italy)
Giuseppina Micela, INAF - Osservatorio Astronomico di Palermo (Italy)
Maurizio D'Alessandro, INAF - Osservatorio Astronomico di Padova (Italy)
Giuseppe Galletta, CISAS - Univ. degli Studi di Padova (Italy)
Enrico Giro, INAF - Osservatorio Astronomico di Padova (Italy)
Alberto Adriani, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Francesca Altieri, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Giancarlo Bellucci, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Daniela Billi, Seconda Univ. degli Studi di Roma Tor Vergata (Italy)
Cesare Cecchi-Pestellini, INAF - Osservatorio Astronomico di Palermo (Italy)
Angela Ciaravella, INAF - Osservatorio Astronomico di Palermo (Italy)
Gianrico Filacchione, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Gabriella Gilli, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Lab. de Météorologie Dynamique, IPSL, Univ. Pierre et Marie Curie (France)
Marco Giuranna, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Davide Grassi, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Giuseppe Leto, INAF - Osservatorio Astrofisico di Catania (Italy)
Emanuele Pace, Univ. degli Studi di Firenze (Italy)
Maria Elisabetta Palumbo, INAF - Osservatorio Astrofisico di Catania (Italy)
Giuseppe Piccioni, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)
Salvatore Scuderi, INAF - Osservatorio Astrofisico di Catania (Italy)
Giovanni Strazzulla, INAF - Osservatorio Astrofisico di Catania (Italy)
Diego Turrini, INAF - Istituto di Astrofisica e Planetologia Spaziali (Italy)


Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

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