High-spectral resolution interferometry at 1 micrometer with VLTI/BIFROST: science drivers and instrument design

Stefan Kraus; Michael J. Ireland; Jean-Baptiste Le Bouquin; John D. Monnier; Barnaby Norris; Frantz Martinache; Denis Defrère; Narsireddy Anugu

doi:10.1117/12.2562181

13 December 2020 High-spectral resolution interferometry at 1 micrometer with VLTI/BIFROST: science drivers and instrument design

Stefan Kraus, Michael J. Ireland, Jean-Baptiste Le Bouquin, John D. Monnier, Barnaby Norris, Frantz Martinache, Denis Defrère, Narsireddy Anugu

Author Affiliations +

Proceedings Volume 11446, Optical and Infrared Interferometry and Imaging VII; 114462H (2020) https://doi.org/10.1117/12.2562181
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

We present science cases and instrument design considerations for a short-wavelength (Y/J-band), high spectral dispersion (R=25,000) instrument that could be implemented at the VLTI visitor focus. The instrument will unlock powerful venues for studying accretion and mass-loss processes at the early/late stages of stellar evolution, for detecting accreting protoplanets around young stars, and for probing the spin-orbit alignment in directly-imaged planetary systems and multiple star systems. In conjuncture with infrastructure improvements on the VLTI unit telescopes, the instrument will also enable off-axis spectroscopy of exoplanets in the 0.1-2” separation range, enabling high-SNR, high spectral resolution follow-up of exoplanets detected with ELT/JWST. We discuss technical implementations, including on fringe tracking and fast laboratory low-order adaptive optics. We outline a pathway for implementation and stress possible synergies with other instruments in the proposed ASGARD suite.

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Stefan Kraus, Michael J. Ireland, Jean-Baptiste Le Bouquin, John D. Monnier, Barnaby Norris, Frantz Martinache, Denis Defrère, and Narsireddy Anugu "High-spectral resolution interferometry at 1 micrometer with VLTI/BIFROST: science drivers and instrument design", Proc. SPIE 11446, Optical and Infrared Interferometry and Imaging VII, 114462H (13 December 2020); https://doi.org/10.1117/12.2562181

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