Performance of the Gemini Planet Imager Non-redundant Mask and Spectroscopy of Two Close-separation Binaries: HR 2690 and HD 142527 - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles The Astronomical Journal Year : 2019

Performance of the Gemini Planet Imager Non-redundant Mask and Spectroscopy of Two Close-separation Binaries: HR 2690 and HD 142527

Alexandra Z. Greenbaum
  • Function : Author
Anthony Cheetham
  • Function : Author
Anand Sivaramakrishnan
  • Function : Author
Fredrik T. Rantakyrö
  • Function : Author
Peter Tuthill
  • Function : Author
Robert J. de Rosa
  • Function : Author
Rebecca Oppenheimer
  • Function : Author
Bruce Macintosh
  • Function : Author
S. Mark Ammons
  • Function : Author
Vanessa P. Bailey
  • Function : Author
Travis Barman
  • Function : Author
Joanna Bulger
  • Function : Author
Andrew Cardwell
  • Function : Author
Jeffrey Chilcote
  • Function : Author
Tara Cotten
  • Function : Author
Rene Doyon
  • Function : Author
Michael P. Fitzgerald
  • Function : Author
Katherine B. Follette
  • Function : Author
Benjamin L. Gerard
  • Function : Author
Stephen J. Goodsell
  • Function : Author
James R. Graham
  • Function : Author
Pascale Hibon
  • Function : Author
Li-Wei Hung
  • Function : Author
Patrick Ingraham
  • Function : Author
Paul Kalas
  • Function : Author
Quinn Konopacky
  • Function : Author
James E. Larkin
  • Function : Author
Jérôme Maire
  • Function : Author
Franck Marchis
  • Function : Author
Mark S. Marley
  • Function : Author
Christian Marois
  • Function : Author
Stanimir Metchev
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Maxwell A. Millar-Blanchaer
  • Function : Author
Katie M. Morzinski
  • Function : Author
Eric L. Nielsen
  • Function : Author
David Palmer
  • Function : Author
Jennifer Patience
  • Function : Author
Marshall Perrin
  • Function : Author
Lisa Poyneer
  • Function : Author
Laurent Pueyo
  • Function : Author
Abhijith Rajan
  • Function : Author
Julien Rameau
  • Function : Author
Naru Sadakuni
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Dmitry Savransky
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Adam C. Schneider
  • Function : Author
Inseok Song
  • Function : Author
Remi Soummer
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Sandrine Thomas
  • Function : Author
J. Kent Wallace
  • Function : Author
Jason J. Wang
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Kimberly Ward-Duong
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Sloane Wiktorowicz
  • Function : Author
Schuyler Wolff
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Abstract

The Gemini Planet Imager (GPI) contains a 10-hole non-redundant mask (NRM), enabling interferometric resolution in complement to its coronagraphic capabilities. The NRM operates both in spectroscopic (integral field spectrograph, henceforth IFS) and polarimetric configurations. NRM observations were taken between 2013 and 2016 to characterize its performance. Most observations were taken in spectroscopic mode, with the goal of obtaining precise astrometry and spectroscopy of faint companions to bright stars. We find a clear correlation between residual wavefront error measured by the adaptive optic system and the contrast sensitivity by comparing phase errors in observations of the same source, taken on different dates. We find a typical 5σ contrast sensitivity of (2-3) × 10-3 at ∼λ/D. We explore the accuracy of spectral extraction of secondary components of binary systems by recovering the signal from a simulated source injected into several data sets. We outline data reduction procedures unique to GPI’s IFS and describe a newly public data pipeline used for the presented analyses. We demonstrate recovery of astrometry and spectroscopy of two known companions to HR 2690 and HD 142527. NRM+polarimetry observations achieve differential visibility precision of σ ∼ 0.4% in the best case. We discuss its limitations on Gemini-S/GPI for resolving inner regions of protoplanetary disks and prospects for future upgrades. We summarize lessons learned in observing with NRM in spectroscopic and polarimetric modes.

Dates and versions

insu-03703857 , version 1 (24-06-2022)

Identifiers

Cite

Alexandra Z. Greenbaum, Anthony Cheetham, Anand Sivaramakrishnan, Fredrik T. Rantakyrö, Gaspard Duchêne, et al.. Performance of the Gemini Planet Imager Non-redundant Mask and Spectroscopy of Two Close-separation Binaries: HR 2690 and HD 142527. The Astronomical Journal, 2019, 157, ⟨10.3847/1538-3881/ab17db⟩. ⟨insu-03703857⟩
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