3 papers
astro-ph.IM2026
Attaining Spectral Energy Distributions With Sub-Percent Uncertainties: All-Sky DA White Dwarf Spectrophotometric Standard Stars For Large Telescopes And Surveys
Abhijit Saha, Edward W. Olszewski, Benjamin M. Boyd +14
We present a synopsis of the project to establish thirty-two new faint () DA white dwarfs as spectrophotometric standards distributed over the whole sky. O…
astro-ph.IM2026
New Time-Dependent WFC3/IR Inverse Sensitivities
Annalisa Calamida, Mariarosa Marinelli, Varun Bajaj +2
We present new time-dependent inverse sensitivities for the WFC3/IR channel. These were calculated using the sensitivity change slopes measured by \citet{2024wfc..rept....6M} and p…
astro-ph.IM2026
WFC3/UVIS Geometric Distortion -- Time Evolution of Linear Terms w.r.t Gaia
Anne O'Connor, Varun Bajaj, Jennifer Mack +1
We align more than 7,400 WFC3/UVIS exposures to the Gaia DR3 catalog to examine the time evolution of the linear terms (shift, rotation, scale and skew) of the geometric distortion…