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Journal Articles The Astronomical Journal Year : 2016

Imaging an 80 au Radius Dust Ring around the F5V Star HD 157587

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Maxwell A. Millar-Blanchaer
  • Function : Author
Jason J. Wang
  • Function : Author
Paul Kalas
James R. Graham
  • Function : Author
Eric L. Nielsen
  • Function : Author
Marshall Perrin
Dae-Sik Moon
  • Function : Author
Deborah Padgett
  • Function : Author
Stanimir Metchev
  • Function : Author
S. Mark Ammons
  • Function : Author
Vanessa P. Bailey
  • Function : Author
Travis Barman
  • Function : Author
Sebastian Bruzzone
  • Function : Author
Joanna Bulger
  • Function : Author
Christine H. Chen
  • Function : Author
Jeffrey Chilcote
Tara Cotten
  • Function : Author
Robert J. de Rosa
  • Function : Author
Rene Doyon
  • Function : Author
Zachary H. Draper
  • Function : Author
Thomas M. Esposito
  • Function : Author
Michael P. Fitzgerald
  • Function : Author
Katherine B. Follette
  • Function : Author
Benjamin L. Gerard
  • Function : Author
Alexandra Z. Greenbaum
  • Function : Author
Pascale Hibon
  • Function : Author
Sasha Hinkley
Li-Wei Hung
  • Function : Author
Patrick Ingraham
  • Function : Author
Mara Johnson-Groh
  • Function : Author
Quinn Konopacky
  • Function : Author
James E. Larkin
  • Function : Author
Bruce Macintosh
Jérôme Maire
  • Function : Author
Franck Marchis
Mark S. Marley
  • Function : Author
Christian Marois
Brenda C. Matthews
  • Function : Author
Rebecca Oppenheimer
  • Function : Author
David Palmer
  • Function : Author
Jennifer Patience
  • Function : Author
Lisa Poyneer
  • Function : Author
Laurent Pueyo
  • Function : Author
Abhijith Rajan
  • Function : Author
Julien Rameau
  • Function : Author
Fredrik T. Rantakyrö
  • Function : Author
Dmitry Savransky
  • Function : Author
Adam C. Schneider
  • Function : Author
Anand Sivaramakrishnan
  • Function : Author
Inseok Song
  • Function : Author
Remi Soummer
  • Function : Author
Sandrine Thomas
  • Function : Author
David Vega
  • Function : Author
J. Kent Wallace
  • Function : Author
Kimberly Ward-Duong
  • Function : Author
Sloane Wiktorowicz
Schuyler Wolff

Abstract

We present H-band near-infrared polarimetric imaging observations of the F5V star HD 157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright ring structure at a separation of ∼80-100 au. The new GPI data complement recent Hubble Space Telescope/STIS observations that show the disk extending out to over 500 au. The GPI image displays a strong asymmetry along the projected minor axis as well as a fainter asymmetry along the projected major axis. We associate the minor and major axis asymmetries with polarized forward scattering and a possible stellocentric offset, respectively. To constrain the disk geometry, we fit two separate disk models to the polarized image, each using a different scattering phase function. Both models favor a disk inclination of ∼70° and a 1.5 ± 0.6 au stellar offset in the plane of the sky along the projected major axis of the disk. We find that the stellar offset in the disk plane, perpendicular to the projected major axis is degenerate with the form of the scattering phase function and remains poorly constrained. The disk is not recovered in total intensity due in part to strong adaptive optics residuals, but we recover three point sources. Considering the system’s proximity to the galactic plane and the point sources’ positions relative to the disk, we consider it likely that they are background objects and unrelated to the disk’s offset from the star.

Dates and versions

insu-03691483 , version 1 (09-06-2022)

Identifiers

Cite

Maxwell A. Millar-Blanchaer, Jason J. Wang, Paul Kalas, James R. Graham, Gaspard Duchêne, et al.. Imaging an 80 au Radius Dust Ring around the F5V Star HD 157587. The Astronomical Journal, 2016, 152, ⟨10.3847/0004-6256/152/5/128⟩. ⟨insu-03691483⟩
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