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Modelling of Zodiacal Light Emission for Space Missions

M. Maris, R. Scaramella, C. Burigana, E. Romelli, J. Amiaux, C. S. Carvalho, J.-C. Cuillandre, A. de Rosa, J. Dinis, P. Hudelot, E. Maiorano, I. Tereno, T. Trombetti

Accurate planning of forthcoming missions requires an accurate knowledge of diffuse sources in order to optimize mission parameters and the scanning strategy. Zodiacal Light (ZL or Zody) is a well known contaminant for ground based and space-borne observations and contributes to determine the limit magnitude of a survey. Despite the physical origin of ZL is well known, predicting and modeling Zody contamination is complicated by a number of subtleties. The cloud of Interplanetary Dust Particles has a quite complex 3D structure, whose main geometrical parameters have been assessed in the last two decades, but their photometrical properties are affected by a significant level of uncertainty. The observer orbiting the Sun is moving within the cloud of IDPs, leading to an important time dependence in the perturbing signal and asking for a precise knowledge of the expected trajectory and scanning strategy of the mission. This work illustrates this problem taking the ESA Euclid mission as a case study and presenting the Zody EUclid Simulator (ZEUS) developed for this mission.

Astronomical Data Analysis Software and Systems XXVI ASP Conference Series
Marco Molinaro, Keith Shortridge, Fabio Pasian

Astronomical Society of the Pacific
Volume 521, Page 531
2019 October

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Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia