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DiskFM: A Forward Modeling Tool for Disk Analysis with Coronagraphic Instruments
Johan Mazoyer, Pauline Arriaga, Justin Hom +6
Because of bright starlight leakage in coronagraphic raw images, faint astrophysical objects such as exoplanets can only be detected using powerful point spread function (PSF) subt…
GPI 2.0 : Optimizing reconstructor performance in simulations and preliminary contrast estimates
Alexander Madurowicz, Bruce Macintosh, Lisa Poyneer +12
During its move from the mountaintop of Cerro Pachon in Chile to the peak of Mauna Kea in Hawaii, the Gemini Planet Imager will make a pit stop to receive various upgrades, includi…
Spiral Arm Pattern Motion in the SAO 206462 Protoplanetary Disk
Chengyan Xie, Bin Ren, Ruobing Dong +5
Spiral arms have been observed in more than a dozen protoplanetary disks, yet the origin of nearly all systems is under debate. Multi-epoch monitoring of spiral arm morphology offe…
Kernel Phase and Coronagraphy with Automatic Differentiation
Benjamin J. S. Pope, Laurent Pueyo, Yinzi Xin +1
The accumulation of aberrations along the optical path in a telescope produces distortions and speckles in the resulting images, limiting the performance of cameras at high angular…
Direct imaging of sub-Jupiter mass exoplanets with James Webb Space Telescope coronagraphy
Aarynn L. Carter, Sasha Hinkley, Mariangela Bonavita +7
The James Webb Space Telescope (JWST), currently scheduled to launch in 2021, will dramatically advance our understanding of exoplanetary systems with its ability to directly image…
Gemini Planet Imager Spectroscopy of the Dusty Substellar Companion HD 206893 B
K. Ward-Duong, J. Patience, K. Follette +55
We present new near-infrared Gemini Planet Imager (GPI) spectroscopy of HD 206893 B, a substellar companion orbiting within the debris disk of its F5V star. The , , , and…
Direct confirmation of the radial-velocity planet Pic c
M. Nowak, S. Lacour, A. -M. Lagrange +90
Methods used to detect giant exoplanets can be broadly divided into two categories: indirect and direct. Indirect methods are more sensitive to planets with a small orbital period,…
Paving the Way to Future Missions: the Roman Space Telescope Coronagraph Technology Demonstration
B. Mennesson, R. Juanola-Parramon, B. Nemati +33
This document summarizes how far the Nancy Grace Roman Space Telescope Coronagraph Instrument (Roman CGI) will go toward demonstrating high-contrast imaging and spectroscopic requi…
Dynamical Evidence of a Spiral Arm--Driving Planet in the MWC 758 Protoplanetary Disk
Bin Ren, Ruobing Dong, Rob G. van Holstein +22
More than a dozen young stars host spiral arms in their surrounding protoplanetary disks. The excitation mechanisms of such arms are under debate. The two leading hypotheses -- com…
Multiband GPI Imaging of the HR 4796A Debris Disk
Christine H. Chen, Johan Mazoyer, Charles A. Poteet +36
We have obtained Gemini Planet Imager (GPI) J-, H-, K1-, and K2-Spec observations of the iconic debris ring around the young, main-sequence star HR 4796A. We applied several point-…
Experimental validation of coronagraphic focal-plane wavefront sensing for future segmented space telescopes
Lucie Leboulleux, Jean-François Sauvage, Rémi Soummer +6
Direct imaging of Earth-like planets from space requires dedicated observatories, combining large segmented apertures with instruments and techniques such as coronagraphs, wavefron…
Retrieving scattering clouds and disequilibrium chemistry in the atmosphere of HR 8799e
P. Mollière, T. Stolker, S. Lacour +25
Clouds are ubiquitous in exoplanet atmospheres and represent a challenge for the model interpretation of their spectra. Complex cloud models are too numerically costly for generati…
On the Effects of Pointing Jitter, Actuators Drift, Telescope Rolls and Broadband Detectors in Dark Hole Maintenance and Electric Field Order Reduction
Leonid Pogorelyuk, Laurent Pueyo, N. Jeremy Kasdin
Space coronagraphs are projected to detect exoplantes that are at least 1e10 times dimmer than their host stars. Yet, the actual detection threshold depends on the instrument's wav…
Multiband Polarimetric Imaging of HR 4796A with the Gemini Planet Imager
Pauline Arriaga, Michael P. Fitzgerald, Gaspard Duchêne +49
HR4796A hosts a well-studied debris disk with a long history due to its high fractional luminosity and favorable inclination lending itself well to both unresolved and resolved obs…
HST survey of the Orion Nebula Cluster in the HO 1.4 m absorption band: III. The population of sub-stellar binary companions
Giovanni M. Strampelli, Jonathan Aguilar, Laurent Pueyo +4
We present new results concerning the sub-stellar binary population in the Orion Nebula Cluster (ONC). Using the Karhunen-Loève Image Projection (KLIP) algorithm, we have reprocess…
HST survey of the Orion Nebula Cluster in the HO 1.4 m absorption band: I. A census of substellar and planetary mass objects
Massimo Robberto, Mario Gennaro, Maria Giulia Ubeira Gabellini +15
In order to obtain a complete census of the stellar and sub-stellar population, down to a few M in the Myr old Orion Nebula Cluster, we used the infrared channel of…
The Gemini Planet Imager view of the HD 32297 debris disk
Gaspard Duchene, Malena Rice, Justin Hom +60
We present new -band scattered light images of the HD 32297 edge-on debris disk obtained with the Gemini Planet Imager (GPI). The disk is detected in total and polarized intensi…
HD 165054: an astrometric calibration field for high-contrast imagers in Baade's Window
Meiji M. Nguyen, Robert J. De Rosa, Jason J. Wang +51
We present a study of the HD 165054 astrometric calibration field that has been periodically observed with the Gemini Planet Imager. HD 165054 is a bright star within Baade's Windo…
Debris Disk Results from the Gemini Planet Imager Exoplanet Survey's Polarimetric Imaging Campaign
Thomas M. Esposito, Paul Kalas, Michael P. Fitzgerald +62
We report the results of a -year direct imaging survey of 104 stars to resolve and characterize circumstellar debris disks in scattered light as part of the Gemini Planet…
Using Data Imputation for Signal Separation in High Contrast Imaging
Bin Ren, Laurent Pueyo, Christine Chen +5
To characterize circumstellar systems in high contrast imaging, the fundamental step is to construct a best point spread function (PSF) template for the non-circumstellar signals (…