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Results for “IMAGE CONTRAST”
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High Contrast Imaging for Astrophysics
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SCExAO/CHARIS High-contrast Imaging of Spirals and Darkening Features in the HD 34700 A Protoplanetary Disk
We present Subaru/SCExAO+Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS) broadband (JHK-band) integral field spectroscopy of HD 34700 A. CHARIS data recover HD 34700 A's disk ring and confirm multiple spirals discovered by Monnier et al. We set limits on substellar companions of ∼12 MJup at 0.″3 (in the ring gap) and ∼5 M(Jup) at 0."75 (outside the ring). The data reveal darkening effects on the ring and spiral, although we do not identify the origin of each feature such as shadows or physical features related to the outer spirals. Geometric albedos converted from the surface brightness suggest a greater scale height and/or prominently abundant submicron dust at position angles between ∼45° and 90°. Spiral fitting resulted in very large pitch angles (∼30°–50°); a stellar flyby of HD 34700 B or infall from a possible envelope is perhaps a reasonable scenario to explain the large pitch angles.
High-Contrast Imaging of Exoplanets with the James Webb Space Telescope
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ExEP: High contrast imaging with MEMS deformable mirrors on the Decadal Survey Testbed
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Enabling High-Contrast Imaging of Binary Stars with the Roman Space Telescope Coronagraph Instrument
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The Twin Decadal Survey Testbeds in the High Contrast Imaging Testbed Facility at NASA’s Jet Propulsion Laboratory
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Realizing the Full Potential of JWST High Contrast Imaging with Coronagraphic Phase-Retrieval
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High-contrast Imaging with Fizeau Interferometry: the Case of Altair*
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A Wolf 359 in Sheep's Clothing: Hunting for Substellar Companions in the Fifth-closest System Using Combined High-contrast Imaging and Radial Velocity Analysis
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Analytical tolerancing of segmented telescope co-phasing for exo-Earth high-contrast imaging
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