Prof. Stephen R. Kane Profile

Prof. Stephen R. Kane

at University of California Riverside

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Author

Publications (4)

Proceedings Article | 5 October 2023 Presentation + Paper

The development of HISPEC for Keck and MODHIS for TMT: science cases and predicted sensitivities

Quinn Konopacky, Ashley Baker, Dimitri Mawet, Michael Fitzgerald, Nemanja Jovanovic, Charles Beichman, Garreth Ruane, Rob Bertz, Hiroshi Terada, Richard Dekany, Larry Lingvay, Marc Kassis, David Anderson, Motohide Tamura, Björn Benneke, Thomas Beatty, Tuan Do, Shogo Nishiyama, Peter Plavchan, Jason Wang, Ji Wang, Adam Burgasser, Jean-Baptiste Ruffio, Huihao Zhang, Aaron Brown, Jason Fucik, Aidan Gibbs, Rose Gibson, Sam Halverson, Christopher Johnson, Sonia Karkar, Takayuki Kotani, Evan Kress, Stephanie Leifer, Kenneth Magnone, Jerome Maire, Rishi Pahuja, Michael Porter, Mitsuko Roberts, Ben Sappey, Jim Thorne, Eric Wang, Etienne Artigau, Geoffrey Blake, Gabriela Canalizo, Guo Chen, Greg Doppmann, René Doyon, Courtney Dressing, Min Fang, Thomas Greene, Greg Herczeg, Lynne Hillenbrand, Andrew Howard, Stephen Kane, Tiffany Kataria, Eliza Kempton, Heather Knutson, David Lafrenière, Chao Liu, Stanimir Metchev, Max Millar-Blanchaer, Norio Narita, Gajendra Pandey, S.P. Rajaguru, Paul Robertson, Colette Salyk, Bun'ei Sato, Evertt Schlawin, Sujan Sengupta, Thirupathi Sivarani, Warren Skidmore, Gautam Vasisht, Chikako Yasui, Hui Zhang

Proceedings Volume 12680, 1268007 (2023) https://doi.org/10.1117/12.2681522

KEYWORDS: Planets, Stars, Exoplanets, Spectrographs, Atmospheres, Spectroscopy, Telescopes

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SPIE Journal Paper | 28 May 2021 Open Access

Community exoplanet imaging data challenge for Roman CGI and starshade rendezvous

Margaret Turnbull, Neil Zimmerman, Julien Girard, Sergi R. Hildebrandt, Zhexing Li, Ell Bogat, Junellie Gonzalez-Quiles, Christopher Stark, Avi Mandell, Tiffany Meshkat, Stephen Kane

JATIS, Vol. 7, Issue 02, 021218, (May 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.2.021218

KEYWORDS: Planets, Exoplanets, Imaging systems, Signal to noise ratio, Stars, Coronagraphy, Telescopes, Data modeling, Point spread functions, Sensors

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Operating in an unprecedented contrast regime (10 − 7 to 10 − 9), the Roman Coronagraph Instrument (CGI) will serve as a pathfinder for key technologies needed for future Earth-finding missions such as HabEx and LUVOIR. The Roman Exoplanet Imaging Data Challenge (Roman EIDC) was a community engagement effort that tasked participants with extracting exoplanets and their orbits for a 47-UMa-like target star given: (1) 15 years of simulated precursor radial velocity (RV) data and (2) six epochs of simulated imaging taken over the course of the Roman mission. Led by the Turnbull CGI Science Investigation Team, the Roman EIDC was preceded by four tutorial “hack-a-thon” events in Baltimore, Pasadena, New York City, and Tokyo. The Roman EIDC officially launched in October 2019 and ran for 8 months, offering a unique opportunity for exoplanet scientists of all experience levels to get acquainted with realistic near-future imaging data. The Roman EIDC simulated images include four epochs with CGI’s Hybrid Lyot Coronagraph (HLC) plus two epochs with a starshade (SS) assumed to arrive as part of a Starshade Rendezvous later in the mission. We focus on our in-house analysis of the outermost planet “d,” for which the SS’s higher throughput and lower noise floor present a factor of ∼4 improvement in the signal-to-noise ratio over the narrow-field HLC. We find that, although the RV detection was marginal for planet d, the precursor RV data enabled the mass and orbit to be constrained with only two epochs of SS imaging. Including the HLC images in the analysis results in improved measurements over RV + SS alone, with the greatest gains resulting from images taken at epochs near maximum elongation. Combining the two epochs of SS imaging with the RV + HLC data resulted in a factor of ∼2 better orbit and mass determinations over RV + HLC alone. In summary, the Roman CGI, combined with precursor RV data and latermission SS imaging, forms a powerful trifecta in detecting exoplanets and determining their masses, albedos, and system configurations. While the Roman CGI will break new scientific and technological ground with direct imaging of giant exoplanets within ∼5 AU of V ˜ 5 and brighter stars, a Roman Starshade Rendezvous mission would additionally enable the detection of planets out to ∼8 AU in those systems.

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Proceedings Article | 15 December 2020 Poster + Presentation + Paper

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

Julien Girard, Ell Bogat, Junellie Gonzalez-Quiles, Sergi Hildebrandt, Stephen Kane, Zhexing Li, Margaret Turnbull, Christopher Stark, Avi Mandell, Tiffany Meshkat, Neil Zimmerman

Proceedings Volume 11443, 1144337 (2020) https://doi.org/10.1117/12.2561736

KEYWORDS: Exoplanets, Coronagraphy, Planets, Imaging systems, Stars, Point spread functions, Astrophysics, Contamination, Light, Wavefronts

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Proceedings Article | 9 July 2018 Paper

Planet formation imager: project update

John Monnier, Michael Ireland, Stefan Kraus, Almudena Alonso-Herrero, Amy Bonsor, Fabien Baron, Amelia Bayo, Jean-Philippe Berger, Tabetha Boyajian, Andrea Chiavassa, David Ciardi, Michelle Creech-Eakman, Willem-Jan de Wit, Denis Defrère, Ruobing Dong, Gaspard Duchêne, Catherine Espaillat, Alexandre Gallenne, Poshak Gandhi, Jean-Francois Gonzalez, Chris Haniff, Sebastian Hoenig, John Ilee, Andrea Isella, Eric Jensen, Attila Juhasz, Stephen Kane, Makoto Kishimoto, Wilhelm Kley, Quentin Kral, Kaitlin Kratter, Lucas Labadie, Sylvestre Lacour, Greg Laughlin, Jean-Baptiste Le Bouquin, Ernest Michael, Farzana Meru, Rafael Millan-Gabet, Florentin Millour, Stefano Minardi, Alessandro Morbidelli, Chris Mordasini, Andreas Morlok, Dave Mozurkewich, Richard Nelson, Johan Olofsson, Rene Oudmaijer, Chris Packham, Claudia Paladini, Olja Panic, Romain Petrov, Benjamin Pope, Joerg-Uwe Pott, Luis Henry Quiroga-Nunez, Cristina Ramos Almeida, Sean Raymond, Zsolt Regaly, Mark Reynolds, Stephen Ridgway, Stephen Rinehart, Matthias Schreiber, Michael Smith, Keivan Stassun, Jean Surdej, Theo ten Brummelaar, Konrad Tristram, Neal Turner, Peter Tuthill, Gerard van Belle, Gautum Vasisht, Alexander Wallace, Gerd Weigelt, Edward Wishnow, Markus Wittkowski, Sebastian Wolf, John Young, Ming Zhao, Zhaohuan Zhu, Sebastian Zúñiga-Fernández

Proceedings Volume 10701, 1070118 (2018) https://doi.org/10.1117/12.2312683

KEYWORDS: Planets, Telescopes, Space telescopes, Exoplanets, Stars, Mid-IR, Interferometry, Signal to noise ratio, Interferometers, Heterodyning

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