Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards H-alpha imaging of protoplanets

Sébastien Vievard; Manon Lallement; Elsa Huby; Sylvestre Lacour; Olivier Guyon; Nemanja Jovanovic; Sergio Leon-saval; Julien Lozi; Vincent Deo; Kyohoon Ahn; Nick Cvetojevic; Kevin Barjot; Guillermo Martin; Harry-Dean Kenchington-Goldsmith; Gaspard Duchêne; Takayuki Kotani; Franck Marchis; Daniel Rouan; Michael Fitzgerald; Steph Sallum; Barnaby Norris; Chris Betters; Pradip Gatkine; John Lin; Yoo Jung Kim; Cécil Pham; Cédric Cassagnettes; Adrien Billat; Motohide Tamura; Guy Perrin

arXiv · 2308.14292

Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards H-alpha imaging of protoplanets

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Abstract

FIRST is a post Extreme Adaptive-Optics (ExAO) spectro-interferometer operating in the Visible (600-800 nm, R~400). Its exquisite angular resolution (a sensitivity analysis of on-sky data shows that bright companions can be detected down to 0.25lambda/D) combined with its sensitivity to pupil phase discontinuities (from a few nm up to dozens of microns) makes FIRST an ideal self-calibrated solution for enabling exoplanet detection and characterization in the future. We present the latest on-sky results along with recent upgrades, including the integration and on-sky test of a new spectrograph (R~3,600) optimized for the detection of H-alpha emission from young exoplanets accreting matter.

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Sébastien Vievard, Manon Lallement, Elsa Huby, Sylvestre Lacour, Olivier Guyon, Nemanja Jovanovic, Sergio Leon-saval, Julien Lozi, Vincent Deo, Kyohoon Ahn, Nick Cvetojevic, Kevin Barjot, Guillermo Martin, Harry-Dean Kenchington-Goldsmith, Gaspard Duchêne, Takayuki Kotani, Franck Marchis, Daniel Rouan, Michael Fitzgerald, Steph Sallum, Barnaby Norris, Chris Betters, Pradip Gatkine, John Lin, Yoo Jung Kim, Cécil Pham, Cédric Cassagnettes, Adrien Billat, Motohide Tamura, Guy Perrin. 2023-08-28. Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards H-alpha imaging of protoplanets. https://arxiv.org/abs/2308.14292

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