Evolution of subhalo orbits in a smoothly-growing host halo potential

no code implementations • 4 Feb 2021 • Go Ogiya, James E. Taylor, Michael J. Hudson

We find that the radial action of the subhalo orbit decreases over the first few orbits, indicating that the response to the growth of the host halo is not adiabatic during this phase.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

The Stability of the Point Spread Function of the Advanced Camera for Surveys on the Hubble Space Telescope and Implications for Weak Gravitational Lensing

no code implementations • 6 Feb 2007 • Jason D. Rhodes, Richard Massey, Justin Albert, Nicholas Collins, Richard S. Ellis, Catherine Heymans, Jonathan P. Gardner, Jean-Paul Kneib, Anton Koekemoer, Alexie Leauthaud, Yannick Mellier, Alexandre Refregier, James E. Taylor, Ludovic van Waerbeke

We derive a parametric correction for the effect of CTE on the shapes of objects in the COSMOS field as a function of observation date, position within the ACS WFC field, and object flux.