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CHEOPS observations of TESS primary mission monotransits

Lendl, Monika; Pollacco, Don; Cooke, Benjamin F. +2 more

We set out to look at the overlap between CHaracterizing ExOPlanets Satellite (CHEOPS) sky coverage and Transiting Exoplanet Survey Satellite (TESS) primary mission monotransits to determine what fraction of TESS monotransits may be observed by CHEOPS. We carry out a simulation of TESS transits based on the stellar population in TICv8 in the prima…

Constraining the oblateness of transiting planets with photometry and spectroscopy

Serrano, L. M.; Barros, S. C. C.; Santos, N. C. +2 more

Rapid planetary rotation can cause the equilibrium shape of a planet to be oblate. While planetary oblateness has mostly been probed by examining the subtle ingress and egress features in photometric transit light curves, we investigate the effect of oblateness on the spectroscopic Rossiter-McLaughlin (RM) signals. We found that a giant planet, wi…

ARCHI: pipeline for light curve extraction of CHEOPS background stars

Guterman, P.; Hoyer, S.; Sousa, Sérgio G. +6 more

High precision time-series photometry from space is being used for a number of scientific cases. In this context, the recently launched CHaracterizing ExOPlanet Satellite (CHEOPS) (ESA) mission promises to bring 20 ppm precision over an exposure time of 6 h, when targeting nearby bright stars, having in mind the detailed characterization of exopla…