Improved Companion Mass Limits for Sirius A with Thermal Infrared Coronagraphy Using a Vector-apodizing Phase Plate and Time-domain Starlight-subtraction Techniques

We use observations with the infrared-optimized Magellan Adaptive Optics (MagAO) system and Clio camera in 3.9 μ m light to place stringent mass constraints on possible undetected companions to Sirius A. We suppress the light from Sirius A by imaging it through a grating vector-apodizing phase plate...

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Bibliographic Details

Published in:	The Astronomical Journal
Main Authors:	Joseph D. Long, Jared R. Males, Sebastiaan Y. Haffert, Logan Pearce, Mark S. Marley, Katie M. Morzinski, Laird M. Close, Gilles P. P. L. Otten, Frans Snik, Matthew A. Kenworthy, Christoph U. Keller, Philip Hinz, John D. Monnier, Alycia Weinberger, Volker Tolls
Format:	Article
Language:	English
Published:	IOP Publishing 2023-01-01
Subjects:	Coronagraphic imaging High contrast techniques Direct imaging Exoplanet detection methods Exoplanet astronomy
Online Access:	https://doi.org/10.3847/1538-3881/acbd4b