Preserving the photometric integrity of companions in high-contrast imaging observations using locally optimized
combination of images

Jérôme Maire; Jonathan Gagné; David Lafrenière; René Doyon; James R. Graham; Jean-Pierre Véran; Lisa A. Poyneer

doi:10.1117/12.926247

13 September 2012 Preserving the photometric integrity of companions in high-contrast imaging observations using locally optimized combination of images

Jérôme Maire, Jonathan Gagné, David Lafrenière, René Doyon, James R. Graham, Jean-Pierre Véran, Lisa A. Poyneer

Author Affiliations +

Proceedings Volume 8447, Adaptive Optics Systems III; 844760 (2012) https://doi.org/10.1117/12.926247
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Direct imaging and spectroscopy can advance our understanding of planet formation and migration through the detection and characterization of extrasolar planets on wide orbits. Accurate photometry and astrometry of detected companions are of crucial importance to derive the planet physical properties.We present an extension of the Locally optimized combination of images (LOCI) method to measure the highest-fidelity photometry as well as accurate astrometry of detected companions. This algorithm is also generalized to Integral-Field Spectrograph (IFS) data processing, giving advantages of a simultaneous angular and spectral differential imaging reduction, retrieving high-fidelity spectra from PSF-subtracted cubes.

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Jérôme Maire, Jonathan Gagné, David Lafrenière, René Doyon, James R. Graham, Jean-Pierre Véran, and Lisa A. Poyneer "Preserving the photometric integrity of companions in high-contrast imaging observations using locally optimized combination of images", Proc. SPIE 8447, Adaptive Optics Systems III, 844760 (13 September 2012); https://doi.org/10.1117/12.926247

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