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12 papers · 2 filters
Parallactic Motion for Companion Discovery: An M-Dwarf Orbiting Alcor
Neil Zimmerman, Ben R. Oppenheimer, Sasha Hinkley +16
The A5V star Alcor has an M3-M4 dwarf companion, as evidenced by a novel astrometric technique. Imaging spectroscopy combined with adaptive optics coronagraphy allowed for the dete…
Astrometry and photometry with HST-WFC3. I. Geometric distortion corrections of F225W, F275W, F336W bands of the UVIS-channel
A. Bellini, L. R. Bedin
An accurate geometric distortion solution for the Hubble Space Telescope UVIS-channel of Wide Field Camera 3 is the first step towards its use for high precision astrometry. In thi…
The Chandra survey of the COSMOS field II: source detection and photometry
S. Puccetti, C. Vignali, N. Cappelluti +15
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra program, that covers the central contiguous ~0.92 deg^2 of the COSMOS field. C-COSMOS is the result of a complex ti…
Comparison of optical observational capabilities for the coming decades: ground versus space
Matt Mountain, Roeland van der Marel, Remi Soummer +7
Ground-based adaptive optics (AO) in the infrared has made exceptional advances in approaching space-like image quality at higher collecting area. Optical-wavelength applications a…
Science and Adaptive Optics Requirements of MICADO, the E-ELT adaptive optics imaging camera
R. Davies, the Micado team
MICADO is the adaptive optics imaging camera being studied for the E-ELT. Its design has been optimised for use with MCAO, but will have its own SCAO module for the initial operati…
Speckle Suppression Through Dual Imaging Polarimetry, and a Ground-Based Image of the HR 4796A Circumstellar Disk
Sasha Hinkley, Ben R. Oppenheimer, Remi Soummer +7
We demonstrate the versatility of a dual imaging polarimeter working in tandem with a Lyot coronagraph and Adaptive Optics to suppress the highly static speckle noise pattern--the…