Developing post-coronagraphic, high-resolution spectroscopy for terrestrial planet characterization on ELTs

N. Jovanovic*, O. Guyon, T. Kotani, H. Kawahara, K. Hosokawa, J. Lozi, J. Males, M. Ireland, M. Tamura, D. Mawet, C. Schwab, B. Norris, S. Leon-Saval, C. Betters, P. Tuthill

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Spectroscopic observations are extremely important for determining the composition, structure, and surface gravity of exoplanetary atmospheres. High resolution spectroscopy of the planet itself has only been demonstrated a handful of times. By using advanced high contrast imagers, it is possible to conduct high resolution spectroscopy on imageable exoplanets, after the star light is first suppressed with an advanced coronagraph. Because the planet is spatially separated in the focal plane, a single mode fiber could be used to collect the light from the planet alone, reducing the photon noise by orders of magnitude. In addition, speckle control applied to the location where an exoplanet is known to exist, can be used to preferentially reject the stellar ux from the fiber further. In this paper we will present the plans for conducting high resolution spectroscopic studies of this nature with the combination of SCExAO and IRD in the H-band on the Subaru Telescope. This technique will be critical to the characterization of terrestrial planets on ELTs and future space missions.

Original languageEnglish
Title of host publicationAO4ELT5
Subtitle of host publicationProceedings of the fifth Adaptive Optics for Extremely Large Telescopes
Place of PublicationTenerife, Canary Islands, Spain
PublisherInstituto de Astrofísica de Canarias
Number of pages9
DOIs
Publication statusPublished - 2017
Event5th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2017 - Tenerife, Canary Islands, Spain
Duration: 25 Jun 201730 Jun 2017

Conference

Conference5th Adaptive Optics for Extremely Large Telescopes, AO4ELT 2017
CountrySpain
CityTenerife, Canary Islands
Period25/06/1730/06/17

Keywords

  • Adaptive optics
  • Coronagraphs
  • Exoplanets
  • Extreme AO
  • Fiber injection
  • High contrast imaging
  • Imager

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