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Proper Motions and Orbits of Distant Local Group Dwarf Galaxies from a combination of Gaia and Hubble Data
Paul Bennet, Ekta Patel, Sangmo Tony Sohn +12
We have determined the proper motions (PMs) of 12 dwarf galaxies in the Local Group (LG), ranging from the outer Milky Way (MW) halo to the edge of the LG. We used HST as the first…
BP3M: Bayesian Positions, Parallaxes, and Proper Motions derived from the Hubble Space Telescope and Gaia data
Kevin A. McKinnon, Andrés del Pino, Constance M. Rockosi +9
We present a hierarchical Bayesian pipeline, BP3M, that measures positions, parallaxes, and proper motions (PMs) for cross-matched sources between Hubble~Space~Telescope (HST) imag…
Total mass slopes and enclosed mass constrained by globular cluster system dynamics
Tadeja Veršič, Sabine Thater, Glenn van de Ven +4
The goal of this work is to probe the total mass distribution of early-type galaxies with globular clusters (GCs) as kinematic tracers, by constraining the parameters of the profil…
JWST-TST High Contrast: Achieving direct spectroscopy of faint substellar companions next to bright stars with the NIRSpec IFU
Jean-Baptiste Ruffio, Marshall D. Perrin, Kielan K. W. Hoch +33
The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly imaged exoplanets from 3-5 um at moderate spectral resolution (R~2,700) and thereby bet…
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
David Grant, Nikole K. Lewis, Hannah R. Wakeford +39
Clouds are prevalent in many of the exoplanet atmospheres that have been observed to date. For transiting exoplanets, we know if clouds are present because they mute spectral featu…
JWST-TST Proper Motions: I. High-Precision NIRISS Calibration and Large Magellanic Cloud Kinematics
M. Libralato, A. Bellini, R. P. van der Marel +27
We develop and disseminate effective point-spread functions and geometric-distortion solutions for high-precision astrometry and photometry with the JWST NIRISS instrument. We corr…