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2025RNAAS...9..100K - Research Notes of the AAS, 9, 100 (2025/April-0)

Precise Near-infrared Occultation of WASP-19b with FourStar on Magellan.

KANODIA S. and MONSON A.

Abstract (from CDS):

We describe the setup and procedure to obtain precise near-infrared photometry with the FourStar imager on the 6.5 m Magellan Baade Telescope at Las Campanas Observatory, which enabled the recovery of a 2316 ± 170 ppm secondary occultation (13.5σ) in the Ks filter for the ultra hot-Jupiter WASP-19b. The unbinned residuals are ∼1400 ppm in 11.6 s and bin to 660 ppm in 1 minute bins or 180 ppm in 15 minutes bins.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanets - Photometry - Hot Jupiters - Near infrared astronomy - Occultation

Simbad objects: 1

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