Publications (206)
Periodic variable stars in CoRoT field LRa02 observed with BEST II
P. Kabath, A. Erikson, H. Rauer +8
The Berlin Exoplanet Search Telescope II (BEST II) is a small wide field-of-view photometric survey telescope system located at the Observatorio Cerro Armazones, Chile. The high du…
Mass determination of the 1:3:5 near-resonant planets transiting GJ 9827 (K2-135)
J. Prieto-Arranz, E. Palle, D. Gandolfi +38
Aims. GJ 9827 (K2-135) has recently been found to host a tightly packed system consisting of three transiting small planets whose orbital periods of 1.2, 3.6, and 6.2 days are near…
The secondary eclipse of CoRoT-1b
R. Alonso, A. Alapini, S. Aigrain +33
The transiting planet CoRoT-1b is thought to belong to the pM-class of planets, in which the thermal emission dominates in the optical wavelengths. We present a detection of its se…
Transit Timing Variations in HIP 41378: CHEOPS and TESS confirm a non-transiting sixth planet in the system
P. Leonardi, L. Borsato, L. Pagliaro +89
In multiple-planet systems, gravitational interactions of exoplanets could lead to transit timing variations (TTVs), whose amplitude becomes significantly enhanced when planets are…
Detection and Doppler monitoring of EPIC 246471491, a system of four transiting planets smaller than Neptune
E. Palle, G. Nowak, R. Luque +43
The Kepler extended mission, also known as K2, has provided the community with a wealth of planetary candidates that orbit stars typically much brighter than the targets of the ori…
A four-planet system orbiting the old thick disk star TOI-1203
D. Gandolfi, A. Alnajjarine, L. M. Serrano +120
TOI-1203 is a bright (V=8.6) G3 V star known to host a transiting warm sub-Neptune on a 25.5 d orbit. Here we report on an intensive high-precision radial velocity and photometric…
K2-137 b: an Earth-sized planet in a 4.3-hour orbit around an M-dwarf
A. M. S. Smith, J. Cabrera, Sz. Csizmadia +34
We report the discovery from K2 of a transiting terrestrial planet in an ultra-short-period orbit around an M3-dwarf. K2-137 b completes an orbit in only 4.3 hours, the second-shor…
The KELT-7b atmospheric thermal-inversion conundrum revisited with CHEOPS, TESS, and additional data
Z. Garai, A. Krenn, P. E. Cubillos +84
Ultrahot Jupiters are predicted to show inverted temperature-pressure (T-P) profiles in the presence of optical absorbers such as TiO and VO. An inverted T-P profile of KELT-7b was…
Refined parameters of the HD 22946 planetary system and the true orbital period of planet d
Z. Garai, H. P. Osborn, D. Gandolfi +85
Multi-planet systems are important sources of information regarding the evolution of planets. However, the long-period planets in these systems often escape detection. HD 22946 is…
Transiting exoplanets from the CoRoT space mission IX. CoRoT-6b: a transiting `hot Jupiter' planet in an 8.9d orbit around a low-metallicity star
M. Fridlund, G. Hebrard, R. Alonso +45
The CoRoT satellite exoplanetary team announces its sixth transiting planet in this paper. We describe and discuss the satellite observations as well as the complementary ground-ba…
HARPS-N, TESS, and CHEOPS discover a transiting sub-Neptune and two outer companions around the bright solar analogue HD 85426
F. Lienhard, A. Mortier, A. Collier Cameron +96
We provide a detailed characterisation of the planetary system orbiting HD 85426 (TOI-1774). This bright G-type star (: 0.99 ; : 1.13 $\text{R…
Characterization of the HD 108236 system with CHEOPS and TESS. Confirmation of a fifth transiting planet
S. Hoyer, A. Bonfanti, A. Leleu +87
The HD108236 system was first announced with the detection of four small planets based on TESS data. Shortly after, the transit of an additional planet with a period of 29.54d was…
Improved Variable Star Search in Large Photometric Data Sets -- New Variables in CoRoT Field LRa02 Detected by BEST II
T. Fruth, P. Kabath, J. Cabrera +10
The CoRoT field LRa02 has been observed with the Berlin Exoplanet Search Telescope II (BEST II) during the southern summer 2007/2008. A first analysis of stellar variability led to…
Searching for Hot Water World Candidates with CHEOPS: Refining the radii and analysing the internal structures and atmospheric lifetimes of TOI-238 b and TOI-1685 b
J. A. Egger, D. Kubyshkina, Y. Alibert +85
Studying the composition of exoplanets is one of the most promising approaches to observationally constrain planet formation and evolution processes. However, this endeavour is com…
A transit survey to search for planets around hot subdwarfs: I. methods and performance tests on light curves from Kepler, K2, TESS, and CHEOPS
V. Van Grootel, F. J. Pozuelos, A. Thuillier +79
Context. Hot subdwarfs experienced strong mass loss on the Red Giant Branch (RGB) and are now hot and small He-burning objects. Aims. In this project we aim to perform a transit su…
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…
Transiting exoplanets from the CoRoT space mission II. CoRoT-Exo-2b: A transiting planet around an active G star
R. Alonso, M. Auvergne, A. Baglin +40
Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12000 stars in the galactic plane. An analys…
The CHEOPS view on the climate of WASP-3 b
G. Scandariato, L. Carone, P. E. Cubillos +83
Hot Jupiters are giant planets subject to intense stellar radiation. The physical and chemical properties of their atmosphere makes them the most amenable targets for the atmospher…
Simultaneous multicolour optical and near-IR transit photometry of GJ 1214b with SOFIA
D. Angerhausen, C. Dreyer, B. Placek +24
The benchmark exoplanet GJ 1214b is one of the best studied transiting planets in the transition zone between rocky Earth-sized planets and gas or ice giants. This class of super-E…
Dynamics of the circumstellar gas in the Herbig Ae stars BF Orionis, SV Cephei, WW Vulpeculae and XY Persei
A. Mora, C. Eiroa, A. Natta +22
We present high resolution (lambda / Delta_lambda = 49000) echelle spectra of the intermediate mass, pre-main sequence stars BF Ori, SV Cep, WW Wul and XY Per. The spectra cover th…
CHEOPS observations confirm nodal precession in the WASP-33 system
A. M. S. Smith, Sz. Csizmadia, V. Van Grootel +86
Aims: We aim to observe the transits and occultations of WASP-33b, which orbits a rapidly-rotating Scuti pulsator, with the goal of measuring the orbital obliquity via the gra…
New Insights into Cosmic Ray induced Biosignature Chemistry in Earth-like Atmospheres
Markus Scheucher, J. L. Grenfell, F. Wunderlich +3
With the recent discoveries of terrestrial planets around active M-dwarfs, destruction processes masking the possible presence of life are receiving increased attention in the exop…
Transiting exoplanets from the CoRoT space mission: VII. The "hot-Jupiter"-type planet CoRoT-5b
H. Rauer, D. Queloz, Sz. Csizmadia +43
Aims. The CoRoT space mission continues to photometrically monitor about 12 000 stars in its field-of-view for a series of target fields to search for transiting extrasolar planets…
The unstable CO2 feedback cycle on ocean planets
D. Kitzmann, Y. Alibert, M. Godolt +6
Ocean planets are volatile rich planets, not present in our Solar System, which are thought to be dominated by deep, global oceans. This results in the formation of high-pressure w…
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…
NGTS-14Ab: a Neptune-sized transiting planet in the desert
A. M. S. Smith, J. S. Acton, D. R. Anderson +35
Context: The sub-Jovian or Neptunian desert is a previously-identified region of parameter space where there is a relative dearth of intermediate-mass planets at short orbital peri…
K2-260 b: a hot Jupiter transiting an F star, and K2-261 b: a warm Saturn around a bright G star
M. C. Johnson, F. Dai, A. B. Justesen +45
We present the discovery and confirmation of two new transiting giant planets from the Kepler extended mission K2. K2-260 b is a hot Jupiter transiting a F6V star in K2 Fi…
Neutral sodium from comet Hale-Bopp: a third type of tail
G. Cremonese, H. Boehnhardt, J. Crovisier +7
We report on the discovery and analysis of a striking neutral sodium gas tail associated with comet C/1995 O1 Hale-Bopp. Sodium D-line emission has been observed at heliocentric di…
The phase curve and the geometric albedo of WASP-43b measured with CHEOPS, TESS and HST WFC3/UVIS
G. Scandariato, V. Singh, D. Kitzmann +79
Observations of the phase curves and secondary eclipses of extrasolar planets provide a window on the composition and thermal structure of the planetary atmospheres. For example, t…
Atmospheric effects of stellar cosmic rays on Earth-like exoplanets orbiting M-dwarfs
F. Tabataba-Vakili, J. L. Grenfell, J. -M. GrieÃmeier +1
M-dwarf stars are generally considered favourable for rocky planet detection. However, such planets may be subject to extreme conditions due to possible high stellar activity. The…
Physical State of the Deep Interior of the CoRoT-7b Exoplanet
F. W. Wagner, F. Sohl, T. Rückriemen +1
The present study takes the CoRoT-7b exoplanet as an analogue for massive terrestrial planets to investigate conditions, under which intrinsic magnetic fields could be sustained in…
A CHEOPS-enhanced view of the HD3167 system
V. Bourrier, A. Deline, A. Krenn +92
Much remains to be understood about the nature of exoplanets smaller than Neptune, most of which have been discovered in compact multi-planet systems. With its inner ultra-short pe…
The Berlin Exoplanet Search Telescope II Catalog of Variable Stars. II. Characterization of the CoRoT SRc02 field
P. Klagyivik, Sz. Csizmadia, T. Pasternacki +10
Time-series photometry of the CoRoT field SRc02 was obtained by the Berlin Exoplanet Search Telescope II (BEST II) in 2009. The main aim was the ground based follow-up of the CoRoT…
A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067
R. Luque, H. P. Osborn, A. Leleu +149
Planets with radii between that of the Earth and Neptune (hereafter referred to as sub-Neptunes) are found in close-in orbits around more than half of all Sun-like stars. Yet, thei…
Assessing the habitability of planets with Earth-like atmospheres with 1D and 3D climate modeling
M. Godolt, J. L. Grenfell, D. Kitzmann +5
The habitable zone (HZ) describes the range of orbital distances around a star where the existence of liquid water on the surface of an Earth-like planet is in principle possible.…
Transiting exoplanets from the CoRoT space mission I - CoRoT-Exo-1b: a low-density short-period planet around a G0V star
P. Barge, A. Baglin, M. Auvergne +35
Context. The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12,000 stars in each of its fields of view; it is able to detect transit candidat…
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…
Precise characterisation of HD 15337 with CHEOPS: a laboratory for planet formation and evolution
N. M. Rosário, O. D. S. Demangeon, S. C. C. Barros +90
We aim to constrain the internal structure and composition of HD 15337 b and c, two short-period planets situated on opposite sides of the radius valley, using new transit photomet…
CHEOPS observations of KELT-20 b/MASCARA-2 b: An aligned orbit and signs of variability from a reflective dayside
V. Singh, G. Scandariato, A. M. S. Smith +87
Occultations are windows of opportunity to indirectly peek into the dayside atmosphere of exoplanets. High-precision transit events provide information on the spin-orbit alignment…
Potential Biosignatures in Super-Earth Atmospheres II. Photochemical Responses
J. L. Grenfell, S. Gebauer, M. Godolt +6
Spectral characterization of Super-Earth atmospheres for planets orbiting in the Habitable Zone of M-dwarf stars is a key focus in exoplanet science. A central challenge is to unde…
Characterization of CoRoT Target Fields with the Berlin Exoplanet Search Telescope: Identification of Periodic Variable Stars in the LRa1 Field
P. Kabath, P. Eigmueller, A. Erikson +6
In this paper, we report on observations of the CoRoT LRa1 field with the Berlin Exoplanet Search Telescope (BEST). The current paper is part of a series of papers describing the r…
Characterization of CoRoT target fields with BEST: Identification of periodic variable stars in the LRa1 field
P. Kabath, P. Eigmueller, A. Erikson +6
In this paper we report on observations of the CoRoT LRa1 field with the Berlin Exoplanet Search Telescope (BEST). The current paper is part of the series of papers describing the…
The Planetary System to KIC 11442793: A Compact Analogue to the Solar System
J. Cabrera, Sz. Csizmadia, H. Lehmann +7
We announce the discovery of a planetary system with 7 transiting planets around a Kepler target, a current record for transiting systems. Planets b, c, e and f are reported for th…
Transit Search from Antarctica and Chile - Comparison and Combination
T. Fruth, J. Cabrera, Sz. Csizmadia +17
Observing sites at the East-Antarctic plateau are considered to provide exceptional conditions for astronomy. The aim of this work is to assess its potential for detecting transiti…
The PLATO field selection process III. Selection of the Prime Sample for the LOPS2 field
V. Nascimbeni, G. Piotto, V. Granata +30
The PLanetary Transits and Oscillations of stars (PLATO) mission will begin its four-year nominal mission in early 2027 by monitoring its Long-duration Observation Phase field at S…
Characterising exoplanets and their environment with UV transmission spectroscopy
L. Fossati, V. Bourrier, D. Ehrenreich +36
Exoplanet science is now in its full expansion, particularly after the CoRoT and Kepler space missions that led us to the discovery of thousands of extra-solar planets. The last de…
55 Cancri e's occultation captured with CHEOPS
B. -O. Demory, S. Sulis, E. Meier Valdes +73
Past occultation and phase-curve observations of the ultra-short period super-Earth 55 Cnc e obtained at visible and infrared wavelengths have been challenging to reconcile with a…
Six transiting planets and a chain of Laplace resonances in TOI-178
A. Leleu, Y. Alibert, N. C. Hara +152
Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the…
A joint effort to discover and characterize two resonant mini Neptunes around TOI-1803 with TESS, HARPS-N and CHEOPS
T. Zingales, L. Malavolta, L. Borsato +130
We present the discovery of two mini Neptunes near a 2:1 orbital resonance configuration orbiting the K0 star TOI-1803. We describe their orbital architecture in detail and suggest…
Transiting exoplanets from the CoRoT space mission III. The spectroscopic transit of CoRoT-Exo-2b with SOPHIE and HARPS
F. Bouchy, D. Queloz, M. Deleuil +34
We report on the spectroscopic transit of the massive hot-Jupiter CoRoT-Exo-2b observed with the high-precision spectrographs SOPHIE and HARPS. By modeling the radial velocity anom…
CHEOPS and TESS view of the ultra-short period super-Earth TOI-561 b
J. A. Patel, J. A. Egger, T. G. Wilson +75
Ultra-short period planets (USPs) are a unique class of super-Earths with an orbital period of less than a day and hence subject to intense radiation from their host star. While mo…
Dust observations of Comet 9P/Tempel 1 at the time of the Deep Impact
G. P. Tozzi, H. Boehnhardt, L. Kolokolova +15
On 4 July 2005 at 05:52 UT, the impactor of NASA's Deep Impact (DI) mission crashed into comet 9P/Tempel 1 with a velocity of about 10 km/s. The material ejected by the impact expa…
Potential Biosignatures in Super-Earth Atmospheres
H. Rauer, S. Gebauer, P. v. Paris +7
Atmospheric temperature and mixing ratio profiles of terrestrial planets vary with the spectral energy flux distribution for different types of M-dwarf stars and the planetary grav…
Transiting exoplanets from the CoRoT space mission IV: CoRoT-Exo-4b: A transiting planet in a 9.2 day synchronous orbit
S. Aigrain, A. Collier Cameron, M. Ollivier +32
CoRoT, the first space-based transit search, provides ultra-high precision light curves with continuous time-sampling over periods, of up to 5 months. This allows the detection of…
TOI-757 b: an eccentric transiting mini-Neptune on a 17.5-d orbit
A. Alqasim, N. Grieves, N. M. Rosário +129
We report the spectroscopic confirmation and fundamental properties of TOI-757 b, a mini-Neptune on a 17.5-day orbit transiting a bright star ( mag) discovered by the TESS…
Discovering planets with PLATO: Comparison of algorithms for stellar activity filtering
G. Canocchi, L. Malavolta, I. Pagano +7
Context. To date, stellar activity is one of the main limitations in detecting small exoplanets via transit photometry. Since this activity is enhanced in young stars, traditional…
The PLATO Input Catalogue of targets (tPIC) for the first Long Pointing Field
M. Montalto, G. Piotto, P. M. Marrese +30
The ESA PLAnetary Transits and Oscillations of stars (PLATO) mission is designed to detect terrestrial planets in the habitable zones of solar-type stars. Owing to telemetry constr…
HIP 41378 observed by CHEOPS: Where is planet d?
S. Sulis, L. Borsato, S. Grouffal +84
HIP 41378 d is a long-period planet that has only been observed to transit twice, three years apart, with K2. According to stability considerations and a partial detection of the R…
The EBLM Project XI. Mass, radius and effective temperature measurements for 23 M-dwarf companions to solar-type stars observed with CHEOPS
M. I. Swayne, P. F. L. Maxted, A. H. M. J. Triaud +104
Observations of low-mass stars have frequently shown a disagreement between observed stellar radii and radii predicted by theoretical stellar structure models. This ``radius inflat…
Clouds in the atmospheres of extrasolar planets. II. Thermal emission spectra of Earth-like planets influenced by low and high-level clouds
D. Kitzmann, A. B. C. Patzer, P. von Paris +2
We study the impact of multi-layered clouds (low-level water and high-level ice clouds) on the thermal emission spectra of Earth-like planets orbiting different types of stars. Clo…
The PLATO field selection process I. Identification and content of the long-pointing fields
V. Nascimbeni, G. Piotto, A. Börner +26
PLATO (PLAnetary Transits and Oscillations of stars) is an ESA M-class satellite planned for launch by end 2026 and dedicated to the wide-field search of transiting planets around…
A deeper view of the CoRoT-9 planetary system. A small non-zero eccentricity for CoRoT-9b likely generated by planet-planet scattering
A. S. Bonomo, G. Hébrard, S. N. Raymond +27
CoRoT-9b is one of the rare long-period (P=95.3 days) transiting giant planets with a measured mass known to date. We present a new analysis of the CoRoT-9 system based on five yea…
Transit timing variations of AU Microscopii b and c
Gy. M. Szabó, Z. Garai, A. Brandeker +76
Here we report large-amplitude transit timing variations (TTVs) for AU\,Microcopii b and c as detected in combined TESS (2018, 2020) and CHEOPS (2020, 2021) transit observations. A…
Detectability of atmospheric features of Earth-like planets in the habitable zone around M dwarfs
F. Wunderlich, M. Godolt, J. L. Grenfell +6
We investigate the detectability of atmospheric spectral features of Earth-like planets in the habitable zone (HZ) around M dwarfs with the future James Webb Space Telescope (JWST)…
Photo-dynamical characterisation of the TOI-178 resonant chain
A. Leleu, J. -B. Delisle, L. Delrez +104
The TOI-178 system consists of a nearby late K-dwarf transited by six planets in the super-Earth to mini-Neptune regime, with radii ranging from 1.2 to 2.9 earth radius and orbital…
Revisiting the transits of CoRoT-7b at a lower activity level
S. C. C. Barros, J. M. Almenara, M. Deleuil +29
CoRoT-7b, the first super-Earth with measured radius discovered, has opened the new field of rocky exoplanets characterisation. To better understand this interesting system, new ob…
Blue Dots Team Transits Working Group Review
A. Sozzetti, C. Afonso, R. Alonso +9
Transiting planet systems offer an unique opportunity to observationally constrain proposed models of the interiors (radius, composition) and atmospheres (chemistry, dynamics) of e…
An all-sky catalog of solar-type dwarfs for exoplanetary transit surveys
V. Nascimbeni, G. Piotto, S. Ortolani +12
Most future surveys designed to discover transiting exoplanets, including TESS and PLATO, will target bright (V<13) and nearby solar-type stars having a spectral type later than F5…
Planetary transit candidates in COROT-IRa01 field
S. Carpano, J. Cabrera, R. Alonso +35
Context: CoRoT is a pioneering space mission devoted to the analysis of stellar variability and the photometric detection of extrasolar planets. Aims: We present the list of planet…
Mass-radius relationships of rocky exoplanets
F. Sohl, F. W. Wagner, H. Rauer
Mass and radius of planets transiting their host stars are provided by radial velocity and photometric observations. Structural models of solid exoplanet interiors are then constru…
Giant Outer Transiting Exoplanet Mass (GOTEM) Survey.VII. TOI-6041: a multi-planet system including a warm Neptune exhibiting strong TTVs
N. Heidari, A. Alnajjarine, H. P. Osborn +101
We present the characterization of the TOI-6041 system, a bright () G7-type star hosting at least two planets. The inner planet, TOI-6041b, is a warm Neptune wit…
Astrophysical Conditions for Planetary Habitability
M. Guedel, R. Dvorak, N. Erkaev +7
With the discovery of hundreds of exoplanets and a potentially huge number of Earth-like planets waiting to be discovered, the conditions for their habitability have become a focal…
The effect of stellar limb darkening values on the accuracy of the planet radii derived from photometric transit observations
Sz. Csizmadia, Th. Pasternacki, C. Dreyer +3
We study how the precision of the exoplanet radius determination is affected by our present knowledge of limb darkening in two cases: when we fix the limb darkening coefficients an…
Evidence of apsidal motion and a possible co-moving companion star detected in the WASP-19 system
L. M. Bernabò, Sz. Csizmadia, A. M. S. Smith +5
Love numbers measure the reaction of a celestial body to perturbing forces, such as the centrifugal force caused by rotation, or tidal forces resulting from the interaction with a…
TOI-1055 b: Neptunian planet characterised with HARPS, TESS, and CHEOPS
A. Bonfanti, D. Gandolfi, J. A. Egger +89
TOI-1055 is a Sun-like star known to host a transiting Neptune-sized planet on a 17.5-day orbit (TOI-1055 b). Radial velocity (RV) analyses carried out by two independent groups us…
Atmospheric studies of habitability in the Gliese 581 system
P. von Paris, S. Gebauer, M. Godolt +2
The M-type star Gliese 581 is orbited by at least one terrestrial planet candidate in the habitable zone, i.e. GL 581 d. Orbital simulations have shown that additional planets insi…
Transiting exoplanets from the CoRoT space mission. XII. CoRoT-12b: a short-period low-density planet transiting a solar analog star
M. Gillon, A. Hatzes, Sz. Csizmadia +50
We report the discovery by the CoRoT satellite of a new transiting giant planet in a 2.83 days orbit about a V=15.5 solar analog star (M_* = 1.08 +- 0.08 M_sun, R_* = 1.1 +- 0.1 R_…
The stable climate of KELT-9b
K. D. Jones, B. M. Morris, B. -O. Demory +76
Even among the most irradiated gas giants, so-called ultra-hot Jupiters, KELT-9b stands out as the hottest planet thus far discovered with a dayside temperature of over 4500K. At t…
XX. CoRoT-20b: A very high density, high eccentricity transiting giant planet
M. Deleuil, A. S. Bonomo, S. Ferraz-Mello +43
We report the discovery by the CoRoT space mission of a new giant planet, CoRoT-20b. The planet has a mass of 4.24 +/- 0.23 MJ and a radius of 0.84 +/- 0.04 RJ. With a mean density…
Ultraviolet Spectropolarimetry as a Tool for Understanding the Diversity of Exoplanetary Atmospheres
L. Fossati, L. Rossi, D. Stam +19
The polarization state of starlight reflected by a planetary atmosphere uniquely reveals coverage, particle size, and composition of aerosols as well as changing cloud patterns. It…
Spi-OPS: Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1 b and reveal a hint of dayside reflection
M. J. Hooton, S. Hoyer, D. Kitzmann +82
The light curves of tidally locked hot Jupiters transiting fast-rotating, early-type stars are a rich source of information about both the planet and star, with full-phase coverage…
3D climate modeling of Earth-like extrasolar planets orbiting different types of host stars
M. Godolt, J. L. Grenfell, A. Hamann-Reinus +7
The potential habitability of a terrestrial planet is usually defined by the possible existence of liquid water on its surface. The potential presence of liquid water depends on ma…
Transiting exoplanets from the CoRoT space mission XXI. CoRoT-19b: A low density planet orbiting an old inactive F9V-star
E. W. Guenther, R. F. Diaz, J. -C. Gazzano +51
Observations of transiting extrasolar planets are of key importance to our understanding of planets because their mass, radius, and mass density can be determined. The CoRoT space…
Characterisation of the Warm-Jupiter TOI-1130 system with CHEOPS and photo-dynamical approach
L. Borsato, D. Degen, A. Leleu +93
Among the thousands of exoplanets discovered to date, approximately a few hundred gas giants on short-period orbits are classified as "lonely" and only a few are in a multi-planet…
Constraining the reflective properties of WASP-178b using Cheops photometry
I. Pagano, G. Scandariato, V. Singh +79
Multiwavelength photometry of the secondary eclipses of extrasolar planets is able to disentangle the reflected and thermally emitted light radiated from the planetary dayside. Thi…
TOI-5678 b: A 48-day transiting Neptune-mass planet characterized with CHEOPS and HARPS
S. Ulmer-Moll, H. P. Osborn, A. Tuson +92
A large sample of long-period giant planets has been discovered thanks to long-term radial velocity surveys, but only a few dozen of these planets have a precise radius measurement…
The Berlin Exoplanet Search Telescope II. Catalog of Variable Stars. I. Characterization of Three Southern Target Fields
T. Fruth, J. Cabrera, R. Chini +11
A photometric survey of three Southern target fields with BEST II yielded the detection of 2,406 previously unknown variable stars and an additional 617 stars with suspected variab…
The tidal deformation and atmosphere of WASP-12b from its phase curve
B. Akinsanmi, S. C. C. Barros, M. Lendl +85
Ultra-hot Jupiters present a unique opportunity to understand the physics and chemistry of planets at extreme conditions. WASP-12b stands out as an archetype of this class of exopl…
K2-139 b: a low-mass warm Jupiter on a 29-day orbit transiting an active K0 V star
O. Barragán, D. Gandolfi, A. M. S. Smith +27
We announce the discovery of K2-139 b (EPIC 218916923 b), a transiting warm-Jupiter (=54725 K) on a 29-day orbit around an active (log =…
Transiting exoplanets from the CoRoT space mission. XIII. CoRoT-13b: a dense hot Jupiter in transit around a star with solar metallicity and super-solar lithium content
J. Cabrera, H. Bruntt, M. Ollivier +45
We announce the discovery of the transiting planet CoRoT-13b. Ground based follow-up in CFHT and IAC80 confirmed CoRoT's observations. The mass of the planet was measured with the…
Transiting exoplanets from the CoRoT space mission: XXVI. CoRoT-24: A transiting multi-planet system
R. Alonso, C. Moutou, M. Endl +48
We present the discovery of a candidate multiply-transiting system, the first one found in the CoRoT mission. Two transit-like features with periods of 5.11 and 11.76d are detected…
Report by the ESA-ESO Working Group on Extra-Solar Planets
M. Perryman, O. Hainaut, D. Dravins +14
Various techniques are being used to search for extra-solar planetary signatures, including accurate measurement of radial velocity and positional (astrometric) displacements, grav…
Sub-stellar Companions of Intermediate-mass Stars with CoRoT: CoRoT-34b, CoRoT-35b, and CoRoT-36b
D. Sebastian, E. W. Guenther, M. Deleuil +17
Theories of planet formation give contradicting results of how frequent close-in giant planets of intermediate mass stars (IMSs; ) are…
An M dwarf Companion to an F-type Star in a young main-sequence binary
Ph. Eigmüller, J. Eislöffel, Sz. Csizmadia +9
Only a few well characterized very low-mass M dwarfs are known today. Our understanding of M dwarfs is vital as these are the most common stars in our solar neighborhood. We aim to…
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…
K2-31b, a grazing transiting hot Jupiter on an 1.26-day orbit around a bright G7V star
S. Grziwa, D. Gandolfi, Sz. Csizmadia +25
We report the discovery of K2-31b, the first confirmed transiting hot Jupiter detected by the K2 space mission. We combined K2 photometry with FastCam lucky imaging and FIES and HA…
Transiting exoplanets from the CoRoT space mission - XIX. CoRoT-23b: a dense hot Jupiter on an eccentric orbit
D. Rouan, H. Parviainen, C. Moutou +40
We report the detection of CoRoT-23b, a hot Jupiter transiting in front of its host star with a period of 3.6314 \pm 0.0001 days. This planet was discovered thanks to photometric d…
Noise properties of the CoRoT data: a planet-finding perspective
S. Aigrain, F. Pont, F. Fressin +30
In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet finding channel, with a particular emphasis on the tim…
Six winters of photometry from Dome C, Antarctica: challenges, improvements, and results from the ASTEP experiment
N. Crouzet, D. Mékarnia, T. Guillot +26
ASTEP (Antarctica Search for Transiting ExoPlanets) is a pilot project that aims at searching and characterizing transiting exoplanets from Dome C in Antarctica and to qualify this…
HD219666b: A hot-Neptune from TESS Sector 1
M. Esposito, D. J. Armstrong, D. Gandolfi +73
We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD219666 (Mstar = 0.92 +/- 0.03 MSun, Rstar = 1.03 +/- 0.03…