Identifying embedded accreting protoplanets at and within the diffraction limit using photonic lantern spectro-astrometry

Daniel M. Levinstein; Stephanie Sallum; Yoo Jung Kim; Jonathan Lin; Nemanja Jovanovic; Michael P. Fitzgerald; Yinzi Xin; Olivier Guyon; Barnaby Norris; Christopher Betters; Sergio Leon-Saval; Vincent Deo; Julien Lozi; Sébastien Vievard; Kyohoon Ahn

doi:10.1117/12.3019296

16 September 2024 Identifying embedded accreting protoplanets at and within the diffraction limit using photonic lantern spectro-astrometry

Daniel M. Levinstein, Stephanie Sallum, Yoo Jung Kim, Jonathan Lin, Nemanja Jovanovic, Michael P. Fitzgerald, Yinzi Xin, Olivier Guyon, Barnaby Norris, Christopher Betters, Sergio Leon-Saval, Vincent Deo, Julien Lozi, Sébastien Vievard, Kyohoon Ahn

Author Affiliations +

Proceedings Volume 13095, Optical and Infrared Interferometry and Imaging IX; 130952M (2024) https://doi.org/10.1117/12.3019296
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Innovation in high angular resolution imaging is essential to identifying planet formation on solar-system scales (∼5−10AU) in active star forming regions beyond 150pc. The photonic lantern is a novel fiber-optic device that can be used to overcome the observational challenges associated with imaging such close-in protoplanets. Photonic lanterns spatially filter out modal noise with high throughput and low power loss, making them appealing for a wide variety of applications including wavefront-sensing, nulling, and spectro-astrometry. Spectro-astrometry, a technique that identifies wavelength-dependent centroid shifts in spectrally-dispersed datasets, could enable the resolution of circumstellar structures within the diffraction limit when conducted with photonic lanterns. Here, we present simulations of spectro-astrometric observations of embedded protoplanets using photonic lanterns. We generate mock, 6-port photonic lantern observations of young stars with gapped circumstellar disks containing accreting protoplanets with emission at the Paschen β hydrogen line. The simulations assume a 10-m class telescope and realistic sources of both photon noise and residual adaptive optics errors. We demonstrate the detection of protoplanets with photonic lantern spectro-astrometry in the presence of circumstellar material by constraining planetary accretion characteristics such as planet separation, position angle, and stellar contrast, and we explore the biases introduced by the presence of the circumstellar material.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Daniel M. Levinstein, Stephanie Sallum, Yoo Jung Kim, Jonathan Lin, Nemanja Jovanovic, Michael P. Fitzgerald, Yinzi Xin, Olivier Guyon, Barnaby Norris, Christopher Betters, Sergio Leon-Saval, Vincent Deo, Julien Lozi, Sébastien Vievard, and Kyohoon Ahn "Identifying embedded accreting protoplanets at and within the diffraction limit using photonic lantern spectro-astrometry", Proc. SPIE 13095, Optical and Infrared Interferometry and Imaging IX, 130952M (16 September 2024); https://doi.org/10.1117/12.3019296

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