
Proceedings Paper
Exploring the potential of the ExoSim simulator for transit spectroscopy noise estimationFormat | Member Price | Non-Member Price |
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Paper Abstract
The technique of transit spectroscopy has given us our first insights into the atmospheric features of exoplanets. The
extremely low signals involved in detecting an atmosphere mean that such observations are vulnerable to noise and
systematics, and that the estimation of the final uncertainties must be made as accurately as possible. Although a number
of models have been produced to simulate such noise there is a paucity of numerical simulators that can capture complex
time-domain effects. ExoSim is a novel, generic, numerical end-to-end simulator of transit spectroscopy intended as
open-access software. It permits the simulation of a time-resolved spectroscopic observation in either primary transit or
secondary eclipse. The observational parameters can be adjusted, and the telescope and instrument parameters changed
in a simple manner to simulate a variety of existing or proposed instruments. ExoSim is a tool to explore a variety of
signal and noise issues that occur in, and might bias, transit spectroscopy observations, including the effects of the
instrument systematics, correlated noise sources, and stellar variability. The simulations are fast, which allows ExoSim
to be used for Monte Carlo simulations of such observations. ExoSim is versatile and has been applied to existing
instruments such as the Hubble Wide Field Camera 3, as well as planned instruments, where it is being used in the study
phase of the proposed ARIEL exoplanet characterization mission. In this paper we present ExoSim, contrast it with
other exoplanet simulators, give an overview of its structure, and review its range of applications.
Paper Details
Date Published: 29 July 2016
PDF: 9 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99043R (29 July 2016); doi: 10.1117/12.2234216
Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)
PDF: 9 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99043R (29 July 2016); doi: 10.1117/12.2234216
Show Author Affiliations
Subhajit Sarkar, Cardiff Univ. (United Kingdom)
Andreas Papageorgiou, Cardiff Univ. (United Kingdom)
Andreas Papageorgiou, Cardiff Univ. (United Kingdom)
Enzo Pascale, Cardiff Univ. (United Kingdom)
Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)
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