292 citations · 1.4k across the 30 of their papers we have counts for
30 papers
Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903
Thomas G. Wilson, Anna M. Simpson, Andrew Collier Cameron +173
Small exoplanet radii show two populations, referred to as super-Earths and sub-Neptunes, separated by a gap known as the radius valley. This may be produced by the removal of atmo…
Detecting false positives with PLATO using double-aperture photometry and centroid shifts
F. Gutiérrez-Canales, R. Samadi, A. Birch +6
PLATO will discover exoplanets around Sun-like stars through transit photometry and characterize their host stars using asteroseismology. Since photometry for most PLATO targets wi…
The CHEOPS view of HD 95338b: refined transit parameters, and a search for exomoons
Sz. Kálmán, A. E. Simon, A. Deline +90
Despite the ever-increasing number of known exoplanets, no uncontested detections have been made of their satellites, known as exomoons. The quest to find exomoons is at the forefr…
Transit-timing variations in the AU Mic system observed with CHEOPS
Á. Boldog, Gy. M. Szabó, L. Kriskovics +86
AU Mic is a very active M dwarf with an edge-on debris disk and two transiting sub-Neptunes with a possible third planetary companion. The two transiting planets exhibit significan…
CHEOPS in-flight performance: A comprehensive look at the first 3.5 years of operations
A. Fortier, A. E. Simon, C. Broeg +128
CHEOPS is a space telescope specifically designed to monitor transiting exoplanets orbiting bright stars. In September 2023, CHEOPS completed its nominal mission and remains in exc…
The PLATO Mission
Heike Rauer, Conny Aerts, Juan Cabrera +842
PLATO (PLAnetary Transits and Oscillations of stars) is ESA's M3 mission designed to detect and characterise extrasolar planets and perform asteroseismic monitoring of a large numb…
No random transits in CHEOPS observations of HD 139139
R. Alonso, S. Hoyer, M. Deleuil +78
HD 139139 (a.k.a. 'The Random Transiter') is a star that exhibited enigmatic transit-like features with no apparent periodicity in K2 data. The shallow depth of the events (2…
Two Warm Neptunes transiting HIP 9618 revealed by TESS & Cheops
Hugh P. Osborn, Grzegorz Nowak, Guillaume Hébrard +126
HIP 9618 (HD 12572, TOI-1471, TIC 306263608) is a bright ( mag) solar analogue. TESS photometry revealed the star to have two candidate planets with radii of …
Glancing through the debris disk: Photometric analysis of DE Boo with CHEOPS
Á. Boldog, Gy. M. Szabó, L. Kriskovics +76
DE Boo is a unique system, with an edge-on view through the debris disk around the star. The disk, which is analogous to the Kuiper belt in the Solar System, was reported to extend…
A full transit of Lupi d and the search for an exomoon in its Hill sphere with CHEOPS
D. Ehrenreich, L. Delrez, B. Akinsanmi +90
The planetary system around the naked-eye star Lupi (HD 136352; TOI-2011) is composed of three exoplanets with masses of 4.7, 11.2, and 8.6 Earth masses. The TESS and CHEOPS…
The geometric albedo of the hot Jupiter HD 189733b measured with CHEOPS
A. F. Krenn, M. Lendl, J. A. Patel +84
Context. Measurements of the occultation of an exoplanet at visible wavelengths allow us to determine the reflective properties of a planetary atmosphere. The observed occultation…
Discovery of TOI-1260d and the characterisation of the multi-planet system
Kristine W. F. Lam, J. Cabrera, M. J. Hooton +83
We report the discovery of a third planet transiting the star TOI-1260, previously known to host two transiting sub-Neptune planets with orbital periods of 3.127 and 7.493 days, re…
CHEOPS finds KELT-1b darker than expected in visible light: Discrepancy between the CHEOPS and TESS eclipse depths
H. Parviainen, T. G. Wilson, M. Lendl +78
Recent TESS-based studies have suggested that the dayside of KELT-1b, a strongly-irradiated brown dwarf, is significantly brighter in visible light than what would be expected base…
CHEOPS geometric albedo of the hot Jupiter HD 209458b
A. Brandeker, K. Heng, M. Lendl +74
We report the detection of the secondary eclipse of the hot Jupiter HD 209458b in optical/visible light using the CHEOPS space telescope. Our measurement of 20.4 +/- 3.3 ppm transl…
A pair of Sub-Neptunes transiting the bright K-dwarf TOI-1064 characterised with CHEOPS
Thomas G. Wilson, Elisa Goffo, Yann Alibert +132
We report the discovery and characterisation of a pair of sub-Neptunes transiting the bright K-dwarf TOI-1064 (TIC 79748331), initially detected in TESS photometry. To characterise…
Analysis of Early Science observations with the CHaracterising ExOPlanets Satellite (CHEOPS) using pycheops
P. F. L. Maxted, D. Ehrenreich, T. G. Wilson +77
CHEOPS(CHaracterising ExOPlanet Satellite) is an ESA S-class mission that observes bright stars at high cadence from low-Earth orbit. The main aim of the mission is to characterize…
The changing face of AU Mic b: stellar spots, spin-orbit commensurability, and Transit Timing Variations as seen by CHEOPS and TESS
Gy. M. Szabó, D. Gandolfi, A. Brandeker +78
AU Mic is a young planetary system with a resolved debris disc showing signs of planet formation and two transiting warm Neptunes near mean-motion resonances. Here we analyse three…
Transit detection of the long-period volatile-rich super-Earth Lupi d with
Laetitia Delrez, David Ehrenreich, Yann Alibert +75
Exoplanets transiting bright nearby stars are key objects for advancing our knowledge of planetary formation and evolution. The wealth of photons from the host star gives detailed…
CHEOPS Precision Phase Curve of the Super-Earth 55 Cnc e
B. M. Morris, L. Delrez, A. Brandeker +79
55 Cnc e is a transiting super-Earth (radius and mass ) orbiting a G8V host star on a 17-hour orbit. Spitzer observations of the planet's phase…
The EBLM project -- VIII. First results for M-dwarf mass, radius and effective temperature measurements using CHEOPS light curves
M. I. Swayne, P. F. L. Maxted, A. H. M. J. Triaud +93
The accuracy of theoretical mass, radius and effective temperature values for M-dwarf stars is an active topic of debate. Differences between observed and theoretical values have r…
CHEOPS observations of the HD 108236 planetary system: A fifth planet, improved ephemerides, and planetary radii
A. Bonfanti, L. Delrez, M. J. Hooton +106
The detection of a super-Earth and three mini-Neptunes transiting the bright ( = 9.2 mag) star HD 108236 (also known as TOI-1233) was recently reported on the basis of TESS and…
The hot dayside and asymmetric transit of WASP-189b seen by CHEOPS
M. Lendl, Sz. Csizmadia, A. Deline +102
The CHEOPS space mission dedicated to exoplanet follow-up was launched in December 2019, equipped with the capacity to perform photometric measurements at the 20 ppm level. As CHEO…
The CHEOPS mission
Willy Benz, Christopher Broeg, Andrea Fortier +107
The CHaracterising ExOPlanet Satellite (CHEOPS) was selected in 2012, as the first small mission in the ESA Science Programme and successfully launched in December 2019. CHEOPS is…
Expected performances of the Characterising Exoplanet Satellite (CHEOPS) III. Data reduction pipeline: architecture and simulated performances
S. Hoyer, P. Guterman, O. Demangeon +5
The CHaracterizing ExOPlanet Satellite (CHEOPS), to be launched in December 2019, will detect and characterize small size exoplanets via ultra high precision photometry during tran…