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Journal Articles The Astronomical Journal Year : 2020

Debris Disk Results from the Gemini Planet Imager Exoplanet Survey's Polarimetric Imaging Campaign

Thomas M. Esposito
  • Function : Author
Paul Kalas
  • Function : Author
Michael P. Fitzgerald
  • Function : Author
Maxwell A. Millar-Blanchaer
  • Function : Author
Jennifer Patience
  • Function : Author
Justin Hom
  • Function : Author
Marshall D. Perrin
  • Function : Author
Robert J. de Rosa
  • Function : Author
Eugene Chiang
  • Function : Author
Ian Czekala
  • Function : Author
Bruce Macintosh
  • Function : Author
James R. Graham
  • Function : Author
Megan Ansdell
  • Function : Author
Pauline Arriaga
  • Function : Author
Sebastian Bruzzone
  • Function : Author
Joanna Bulger
  • Function : Author
Christine H. Chen
  • Function : Author
Tara Cotten
  • Function : Author
Ruobing Dong
  • Function : Author
Zachary H. Draper
  • Function : Author
Katherine B. Follette
  • Function : Author
Li-Wei Hung
  • Function : Author
Ronald Lopez
  • Function : Author
Brenda C. Matthews
  • Function : Author
Johan Mazoyer
  • Function : Author
Stan Metchev
  • Function : Author
Julien Rameau
  • Function : Author
Bin Ren
  • Function : Author
Malena Rice
  • Function : Author
Inseok Song
  • Function : Author
Kevin Stahl
  • Function : Author
Jason Wang
  • Function : Author
Schuyler Wolff
  • Function : Author
Ben Zuckerman
  • Function : Author
S. Mark Ammons
  • Function : Author
Vanessa P. Bailey
  • Function : Author
Travis Barman
  • Function : Author
Jeffrey Chilcote
  • Function : Author
Rene Doyon
  • Function : Author
Benjamin L. Gerard
  • Function : Author
Stephen J. Goodsell
  • Function : Author
Alexandra Z. Greenbaum
  • Function : Author
Pascale Hibon
  • Function : Author
Sasha Hinkley
  • Function : Author
Patrick Ingraham
  • Function : Author
Quinn Konopacky
  • Function : Author
Jérôme Maire
  • Function : Author
Franck Marchis
  • Function : Author
Mark S. Marley
  • Function : Author
Christian Marois
  • Function : Author
Eric L. Nielsen
  • Function : Author
Rebecca Oppenheimer
  • Function : Author
David Palmer
  • Function : Author
Lisa Poyneer
  • Function : Author
Laurent Pueyo
  • Function : Author
Abhijith Rajan
  • Function : Author
Fredrik T. Rantakyrö
  • Function : Author
Jean-Baptiste Ruffio
  • Function : Author
Dmitry Savransky
  • Function : Author
Adam C. Schneider
  • Function : Author
Anand Sivaramakrishnan
  • Function : Author
Rémi Soummer
  • Function : Author
Sandrine Thomas
  • Function : Author
Kimberly Ward-Duong
  • Function : Author

Abstract

We report the results of a ∼4 yr direct imaging survey of 104 stars to resolve and characterize circumstellar debris disks in scattered light as part of the Gemini Planet Imager (GPI) Exoplanet Survey. We targeted nearby (≲150 pc), young (≲500 Myr) stars with high infrared (IR) excesses (LIR/L > 10-5), including 38 with previously resolved disks. Observations were made using the GPI high-contrast integral field spectrograph in H-band (1.6 μm) coronagraphic polarimetry mode to measure both polarized and total intensities. We resolved 26 debris disks and 3 protoplanetary/transitional disks. Seven debris disks were resolved in scattered light for the first time, including newly presented HD 117214 and HD 156623, and we quantified basic morphologies of five of them using radiative transfer models. All of our detected debris disks except HD 156623 have dust-poor inner holes, and their scattered-light radii are generally larger than corresponding radii measured from resolved thermal emission and those inferred from spectral energy distributions. To assess sensitivity, we report contrasts and consider causes of nondetections. Detections were strongly correlated with high IR excess and high inclination, although polarimetry outperformed total intensity angular differential imaging for detecting low-inclination disks (≲70°). Based on postsurvey statistics, we improved upon our presurvey target prioritization metric predicting polarimetric disk detectability. We also examined scattered-light disks in the contexts of gas, far-IR, and millimeter detections. Comparing H-band and ALMA fluxes for two disks revealed tentative evidence for differing grain properties. Finally, we found no preference for debris disks to be detected in scattered light if wide-separation substellar companions were present.

Dates and versions

insu-03705199 , version 1 (27-06-2022)

Identifiers

Cite

Thomas M. Esposito, Paul Kalas, Michael P. Fitzgerald, Maxwell A. Millar-Blanchaer, Gaspard Duchêne, et al.. Debris Disk Results from the Gemini Planet Imager Exoplanet Survey's Polarimetric Imaging Campaign. The Astronomical Journal, 2020, 160, ⟨10.3847/1538-3881/ab9199⟩. ⟨insu-03705199⟩
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