CHARIS science: Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation

Timothy D. Brandt, Michael W. McElwain, Markus Janson, Gillian R. Knapp, Kyle Mede, Mary A. Limbach, Tyler Groff, Adam Burrows, James E. Gunn, Olivier Guyon, Jun Hashimoto, Masahiko Hayashi, Nemanja Jovanovic, N. J. Kasdin, Masayuki Kuzuhara, Robert H. Lupton, Frantz Martinache, Satoko Sorahana, David S. Spiegel, Naruhisa TakatoMotohide Tamura, Edwin L. Turner, Robert Vanderbei, John Wisniewski

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

11 Citations (Scopus)

Abstract

We describe the expected scientific capabilities of CHARIS, a high-contrast integral-field spectrograph (IFS) currently under construction for the Subaru telescope. CHARIS is part of a new generation of instruments, enabled by extreme adaptive optics (AO) systems (including SCExAO at Subaru), that promise greatly improved contrasts at small angular separation thanks to their ability to use spectral information to distinguish planets from quasistatic speckles in the stellar point-spread function (PSF). CHARIS is similar in concept to GPI and SPHERE, on Gemini South and the Very Large Telescope, respectively, but will be unique in its ability to simultaneously cover the entire near-infrared J, H, and K bands with a low-resolution mode. This extraordinarily broad wavelength coverage will enable spectral differential imaging down to angular separations of a few λ/D, corresponding to ∼0".1. SCExAO will also offer contrast approaching 10-5 at similar separations, ∼0".1-0".2. The discovery yield of a CHARIS survey will depend on the exoplanet distribution function at around 10 AU. If the distribution of planets discovered by radial velocity surveys extends unchanged to ∼20 AU, observations of ∼200 mostly young, nearby stars targeted by existing high-contrast instruments might find ∼1-3 planets. Carefully optimizing the target sample could improve this yield by a factor of a few, while an upturn in frequency at a few AU could also increase the number of detections. CHARIS, with a higher spectral resolution mode of R ∼ 75, will also be among the best instruments to characterize planets and brown dwarfs like HR 8799 cde and κ and b.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9148
ISBN (Print)9780819496164
DOIs
StatePublished - 2014
EventAdaptive Optics Systems IV - Montreal, Canada
Duration: Jun 22 2014Jun 27 2014

Other

OtherAdaptive Optics Systems IV
CountryCanada
CityMontreal
Period6/22/146/27/14

Fingerprint

Subaru Telescope
Exoplanets
Planets
extrasolar planets
Instrumentation
Telescopes
planets
Imaging
telescopes
Imaging techniques
Extreme Adaptive Optics
Radial velocity
Simulation
simulation
Spectral Resolution
Spectrograph
Speckle
Spectrographs
Telescope
Adaptive optics

Keywords

  • Adaptive Optics
  • Coronagraphy
  • Exoplanets
  • High Contrast Imaging
  • Integral Field Spectrograph

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Brandt, T. D., McElwain, M. W., Janson, M., Knapp, G. R., Mede, K., Limbach, M. A., ... Wisniewski, J. (2014). CHARIS science: Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9148). [914849] SPIE. https://doi.org/10.1117/12.2057256

CHARIS science : Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation. / Brandt, Timothy D.; McElwain, Michael W.; Janson, Markus; Knapp, Gillian R.; Mede, Kyle; Limbach, Mary A.; Groff, Tyler; Burrows, Adam; Gunn, James E.; Guyon, Olivier; Hashimoto, Jun; Hayashi, Masahiko; Jovanovic, Nemanja; Kasdin, N. J.; Kuzuhara, Masayuki; Lupton, Robert H.; Martinache, Frantz; Sorahana, Satoko; Spiegel, David S.; Takato, Naruhisa; Tamura, Motohide; Turner, Edwin L.; Vanderbei, Robert; Wisniewski, John.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9148 SPIE, 2014. 914849.

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

Brandt, TD, McElwain, MW, Janson, M, Knapp, GR, Mede, K, Limbach, MA, Groff, T, Burrows, A, Gunn, JE, Guyon, O, Hashimoto, J, Hayashi, M, Jovanovic, N, Kasdin, NJ, Kuzuhara, M, Lupton, RH, Martinache, F, Sorahana, S, Spiegel, DS, Takato, N, Tamura, M, Turner, EL, Vanderbei, R & Wisniewski, J 2014, CHARIS science: Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9148, 914849, SPIE, Adaptive Optics Systems IV, Montreal, Canada, 6/22/14. https://doi.org/10.1117/12.2057256
Brandt TD, McElwain MW, Janson M, Knapp GR, Mede K, Limbach MA et al. CHARIS science: Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9148. SPIE. 2014. 914849 https://doi.org/10.1117/12.2057256
Brandt, Timothy D. ; McElwain, Michael W. ; Janson, Markus ; Knapp, Gillian R. ; Mede, Kyle ; Limbach, Mary A. ; Groff, Tyler ; Burrows, Adam ; Gunn, James E. ; Guyon, Olivier ; Hashimoto, Jun ; Hayashi, Masahiko ; Jovanovic, Nemanja ; Kasdin, N. J. ; Kuzuhara, Masayuki ; Lupton, Robert H. ; Martinache, Frantz ; Sorahana, Satoko ; Spiegel, David S. ; Takato, Naruhisa ; Tamura, Motohide ; Turner, Edwin L. ; Vanderbei, Robert ; Wisniewski, John. / CHARIS science : Performance simulations for the Subaru Telescope's third-generation of exoplanet imaging instrumentation. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9148 SPIE, 2014.
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