355 citations · 1.2k across the 27 of their papers we have counts for
29 papers
The Influence of Stellar Chromospheres and Coronae on Exoplanet Transmission Spectroscopy
Volker Perdelwitz, Adam Chaikin-Lifshitz, Aviv Ofir +1
A main source of bias in transmission spectroscopy of exoplanet atmospheres is magnetic activity of the host star in the form of stellar spots, faculae or flares. However, the fact…
Planetary Mass Determinations from a Simplified Photodynamical Model -- Application To The Complete Kepler Dataset
Aviv Ofir, Gideon Yoffe, Oded Aharonson
We use PyDynamicaLC, a model using the least number of, and the least correlated, degrees of freedom needed to derive a photodynamical model, to describe some of the smallest -- an…
The Advantages of Global Photometric Models in Fitting Transit Variations
Yair Judkovsky, Aviv Ofir, Oded Aharonson
Estimation of planetary orbital and physical parameters from light-curve data relies heavily on the accurate interpretation of Transit Timing Variations (TTV) measurements. In this…
Kepler Multi-Transiting Systems Physical Properties and Impact Parameter Variations
Yair Judkovsky, Aviv Ofir, Oded Aharonson
We fit a dynamical model to Kepler systems that contain four or more transiting planets using the analytic method AnalyticLC, and obtain physical and orbital parameters for 101 pla…
A Reappraisal of Subtropical Subsurface Water Ice Stability on Mars
L. Lange, F. Forget, M. Vincendon +6
Two arguments have suggested the presence of subsurface water ice at latitudes lower than 30\textdegree~on Mars. First, the absence of CO2 frost on pole-facing slopes was explained…
ULTRASAT: A wide-field time-domain UV space telescope
Y. Shvartzvald, E. Waxman, A. Gal-Yam +41
The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2026. It will carry a telescope with an unprecedentedly large field o…