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The Roman exoplanet Imaging data challenge: a major community engagement effort

Girard, Julien H. and Bogat, Ell and Gonzalez-Quiles, Junellie and Hildebrandt, Sergi R. and Kane, Stephen R. and Li, Zhexing and Turnbull, Margaret C. and Stark, Christopher and Mandell, Avi and Meshkat, Tiffany and Zimmerman, Neil T. (2020) The Roman exoplanet Imaging data challenge: a major community engagement effort. In: Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave. Proceedings of SPIE. No.11443. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 1144337. ISBN 9781510636736.

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Organized by the Turnbull Science Investigation Team (SIT), the 2019-2020 Roman Exoplanet Imaging Data Challenge (EIDC) launched in mid October 2019 and ran for eight months. This data challenge was a unique opportunity for exoplanet scientists of all backgrounds and experience levels to get acquainted with realistic Roman CGI (coronagraphic) simulated data with a new contrast regimes at 10-8 to 10-9 enabling to unveil planets down to the Neptune-mass in reflected light. Participating teams had to recover the astrometry of an exoplanetary system combining precursor radial velocity data (also simulated across 15 years) with two to six coronagraphic imaging epochs (HLC and Star Shade). They had to perform accurate orbital fitting and determine the mass of any planet hidden in the data. It involved PSF subtraction techniques, post-processing and other astrophysics hurdles to overcome such as contamination sources (stellar, extragalactic and exozodiacal light). We organized four tutorial "hack-a-thon" events to get as many people on-board. The EIDC proved to be an excellent way to engage with the intricacies of the first mission to perform wavefront control in space, as a pathfinder to future flagship missions. It also generated a lot of positive interactions between open source package owners and a whole new set of young exoplanet scientists running them. As a community we are a few steps closer to being ready to analyze real CGI data!

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Girard, Julien H.0000-0001-8627-0404
Hildebrandt, Sergi R.0000-0003-0220-0009
Kane, Stephen R.0000-0002-7084-0529
Turnbull, Margaret C.0000-0002-0569-1643
Mandell, Avi0000-0002-8119-3355
Meshkat, Tiffany0000-0001-6126-2467
Zimmerman, Neil T.0000-0001-5484-1516
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was funded by NASA Grant NNG16PJ27C, which supports the Turnbull Roman CGI SIT. We thank the Hayden Planetarium and Jackie Faherty for an excellent tour of known exoplanet host stars, and the Flatiron Institute for hosting the New York City hack-a-thon event. We thank STScI, IPAC, and Motohide Tamura and Masayuki Kuzuhara (University of Tokyo & Astrobiology Center) for hosting hack-a-thons in Baltimore, Pasadena, and Tokyo. We thank John Krist and the JPL project science team for the OS6 simulations, and we thank Sarah Blunt and BJ Fulton for their ongoing work on orbitize! and RadVel. Finally, we thank all of the tutorial and/or challenge participants for joining us in this community effort. We also thank the SPIE Organizing Committee and the Proceedings Coordinators.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:High Contrast Imaging, Exoplanets, Nancy Grace Roman Space Telescope, Data Challenge, Coronagraphs, Community Engagement, Astrometry, Star Shade
Series Name:Proceedings of SPIE
Issue or Number:11443
Record Number:CaltechAUTHORS:20201221-120012812
Persistent URL:
Official Citation:Julien H. Girard, Ell Bogat, Junellie Gonzalez-Quiles, Sergi R. Hildebrandt, Stephen Kane, Zhexing Zhexing, Margaret Turnbull, Christopher Stark, Avi Mandell, Tiffany Meshkat, and Neil T. Zimmerman "The Roman exoplanet Imaging data challenge: a major community engagement effort", Proc. SPIE 11443, Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave, 1144337 (15 December 2020);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107240
Deposited By: George Porter
Deposited On:21 Dec 2020 21:02
Last Modified:16 Nov 2021 19:00

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