No planet for HD 166435

Abstract

The G0V star HD166435 has been observed by the fiber-fed spectrograph ELODIE as one of the targets in the large extra-solar planet survey that we are conducting at the Observatory of Haute-Provence. We detected coherent, low-amplitude, radial-velocity variations with a period of 3.7987days, suggesting a possible close-in planetary companion. Subsequently, we initiated a series of high-precision photometric observations to search for possible planetary transits and an additional series of CaII H and K observations to measure the level of surface magnetic activity and to look for possible rotational modulation. Surprisingly, we found the star to be photometrically variable and magnetically active. A detailed study of the phase stability of the radial-velocity signal revealed that the radial-velocity variability remains coherent only for durations of about 30days. Analysis of the time variation of the spectroscopic line profiles using line bisectors revealed a correlation between radial velocity and line-bisector orientation. All of these observations, along with a one-quarter cycle phase shift between the photometric and the radial-velocity variationss, are well explained by the presence of dark photospheric spots on HD166435. We conclude that the radial-velocity variations are not due to gravitational interaction with an orbiting planet but, instead, originate from line-profile changes stemming from star spots on the surface of the star. The quasi-coherence of the radial-velocity signal over more than two years, which allowed a fair fit with a binary model, makes the stability of this star unusual among other active stars. It suggests a stable magnetic field orientation where spots are always generated at about the same location on the surface of the star.

9 pages, 8 figures, Accepted for publication in A&A

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• Host Star Properties and Transit Exclusion for the HD 38529 Planetary System
• Extrasolar planets and brown dwarfs around AF-type stars. IX. The HARPS southern sample
• Persistent starspot signals on M dwarfs: multi-wavelength Doppler observations with the Habitable-zone Planet Finder and Keck/HIRES
• The Magellan-TESS Survey I: Survey Description and Mid-Survey Results
• Periodic radial velocity variations in RU Lupi
• Up to four planets around the M dwarf GJ 163. Sensitivity of Bayesian planet detection criteria to prior choice
• A 4-Planet System Orbiting the K0V Star HD 141399
• The HARPS search for southern extrasolar planets XXI. Three new giant planets orbiting the metal-poor stars HD5388, HD181720, and HD190984
• WASP-16b: A new Jupiter-like planet transiting a southern solar analog
• Decoding the radial velocity variations of HD41248 with ESPRESSO
• Starspot occultations in infrared transit spectroscopy: the case of WASP-52b
• Temporal evolution and correlations of optical activity indicators measured in Sun-as-a-star observations
• Extrasolar planets and brown dwarfs around AF-type stars. X.The SOPHIE northern sample. Combining the SOPHIE and HARPS surveys to compute the close giant planet mass-period distribution around AF-type stars
• Astrophysical false positives in direct imaging for exoplanets: a white dwarf close to a rejuvenated star
• Detecting Exomoons Via Doppler Monitoring of Directly Imaged Exoplanets
• K2-99: a subgiant hosting a transiting warm Jupiter in an eccentric orbit and a long-period companion
• Efficient modeling of correlated noise I. Statistical significance of periodogram peaks
• The Radial Velocity Variability of the K-giant Gamma Draconis: Stellar Variability Masquerading as a Planet
• HAT-P-31b,c: A Transiting, Eccentric, Hot Jupiter and a Long-Period, Massive Third-Body
• HD 23472: A multi-planetary system with three super-Earths and two potential super-Mercuries
• Discovery of starspots on Vega - First spectroscopic detection of surface structures on a normal A-type star
• The correlation between photometric variability and radial velocity jitter, based on TESS and HARPS observations
• Improving exoplanet detection capabilities with the false inclusion probability. Comparison with other detection criteria in the context of radial velocities
• HAT-P-24b: An inflated hot-Jupiter on a 3.36d period transiting a hot, metal-poor star
• Searching for Planetary Transits in Galactic Open Clusters: EXPLORE/OC
• TOI-1759 b: a transiting sub-Neptune around a low mass star characterized with SPIRou and TESS
• A Highly Eccentric Warm Jupiter Orbiting TIC 237913194
• The CARMENES search for exoplanets around M dwarfs: The warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)
• The SOPHIE search for northern extrasolar planets. X. Detection and characterization of giant planets by the dozen
• A Super-Earth Orbiting the Nearby Sun-like Star HD 1461
• Finding Exoplanets Orbiting Young Active Stars. I. Technique
• The HARPS search for southern extra-solar planets. IX. Exoplanets orbiting HD 100777, HD 190647, and HD 221287
• K2-290: a warm Jupiter and a mini-Neptune in a triple-star system
• The SPIRou Legacy Survey Rotation period of quiet M dwarfs from circular polarization in near-infrared spectral lines: I. The SPIRou APERO analysis
• Stellar Activity and Exclusion of the Outer Planet in the HD 99492 System
• Understanding stellar activity-induced radial velocity jitter using simultaneous K2 photometry and HARPS RV measurements
• Limits of ultra-high-precision optical astrometry: Stellar surface structures
• Exploring the Brown Dwarf Desert: New Substellar Companions from the SDSS-III MARVELS Survey
• Five transiting hot Jupiters discovered using WASP-South, Euler and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b and WASP-133 b
• Multi-band high resolution spectroscopy rules out the hot Jupiter BD+20 1790b - First data from the GIARPS Commissioning
• Radial velocity information content of M dwarf spectra in the near-infrared
• The Impact of Stellar Surface Magnetoconvection and Oscillations on the Detection of Temperate, Earth-Mass Planets Around Sun-Like Stars
• Planet Detectability in the Alpha Centauri System
• Mass and period limits on the ringed companion transiting the young star J1407
• NGTS-10b: The shortest period hot Jupiter yet discovered
• Bayesian analysis of the radial velocities of HD 11506 reveals another planetary companion
• A pair of warm giant planets near the 2:1 mean motion resonance around the K-dwarf star TOI-2202
• HADES RV Programme with HARPS-N at TNG: V. A super-Earth on the inner edge of the habitable zone of the nearby M-dwarf GJ 625
• High-precision multi-wavelength eclipse photometry of the ultra-hot gas giant exoplanet WASP-103 b
• The HARPS search for southern extra-solar planets XXXVI: Five new long-period giant planets and a system update
• The Penn State-Torun Centre for Astronomy Planet Search stars. I. Spectroscopic analysis of 348 red giants
• Planetary companions orbiting M giants HD 208527 and HD 220074
• Gliese 49: Activity evolution and detection of a super-Earth
• GW Ori: Inner disk readjustments in a triple system
• Linking chromospheric activity and magnetic field properties for late-type dwarf stars
• Three Short Period Jupiters from TESS
• A combined spectroscopic and photometric stellar activity study of Epsilon Eridani
• No evidence for activity correlations in the radial velocities of Kapteyn's star
• A vigorous activity cycle mimicking a planetary system in HD200466
• Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system
• BEBOP III. Observations and an independent mass measurement of Kepler-16 (AB) b -- the first circumbinary planet detected with radial velocities
• Refined Properties of the HD 130322 Planetary System
• Planets around active stars
• Tess asteroseismology of the known planet host star ${\lambda }^2$ Fornacis
• ESPRESSO on VLT: An Instrument for Exoplanet Research
• The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey
• The GAPS Programme with HARPS-N at TNG XVII. Line profile indicators and kernel regression as diagnostics of radial-velocity variations due to stellar activity in solar-like stars
• Three Temperate Neptunes Orbiting Nearby Stars
• Elodie metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD43691 and HD132406
• SOPHIE velocimetry of Kepler transit candidates XIV. A joint photometric, spectroscopic, and dynamical analysis of the Kepler-117 system
• The Lick-Carnegie Exoplanet Survey: Gliese 687b: A Neptune-Mass Planet Orbiting a Nearby Red Dwarf
• The test case of HD26965: difficulties disentangling weak Doppler signals from stellar activity
• TOI-132 b: A short-period planet in the Neptune desert transiting a $V=11.3$ G-type star
• WASP-South hot Jupiters: WASP-178b, WASP-184b, WASP-185b & WASP-192b
• Discovery and characterization of the exoplanets WASP-148b and c. A transiting system with two interacting giant planets
• The SOPHIE search for northern extrasolar planets. XI. Three new companions and an orbit update: Giant planets in the habitable zone
• Analysis of combined radial velocities and activity of BD+20 1790: evidence supporting the existence of a planetary companion
• Testing whether a signal is strictly periodic. Application to disentangling planets and stellar activity in radial velocities
• A comparative study of two X2.2 and X9.3 solar flares observed with HARPS-N: Reconciling Sun-as-a-star spectroscopy and high-spatial resolution solar observations in the context of the solar-stellar connection
• No Planet Around HD 219542 B
• WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits
• The first super-Earth Detection from the High Cadence and High Radial Velocity Precision Dharma Planet Survey
• Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets. II. A giant planet in a close-in orbit around the RGB star HIP63242
• WASP-71b: a bloated hot Jupiter in a 2.9-day, prograde orbit around an evolved F8 star
• WASP-32b: A transiting hot Jupiter planet orbiting a lithium-poor, solar-type star
• Evidence of a massive planet candidate orbiting the young active K5V star BD+20 1790
• The SOPHIE search for northern extrasolar planets. II. A multi-planet system around HD9446
• The Solar Twin Planet Search II. A Jupiter twin around a solar twin
• Stellar Accelerations and the Galactic Gravitational Field
• Stellar activity as noise in exoplanet detection I. Methods and application to solar-like stars and activity cycles
• NGTS-6b: An Ultra Short Period Hot-Jupiter Orbiting an Old K Dwarf
• NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf
• WASP-54b, WASP-56b and WASP-57b: Three new sub-Jupiter mass planets from SuperWASP
• The HARPS search for southern extra-solar planets. XX. Planets around the active star BD-08:2823
• The HARPS search for southern extra-solar planets XLV. Two Neptune mass planets orbiting HD 13808: a study of stellar activity modelling's impact on planet detection
• A likely exoplanet orbiting the oscillating K-giant α Arietis
• A super-Earth orbiting the nearby M-dwarf GJ 536
• Search for exoplanet around northern circumpolar stars - Four planets around HD 11755, HD 12648, HD 24064, and 8 Ursae Minoris
• A sub-Earth-mass planet orbiting Barnard's star
• Kepler-432 b: a massive warm Jupiter in a 52-day eccentric orbit transiting a giant star
• A Search for the Transit of HD 168443b: Improved Orbital Parameters and Photometry
• MARVELS-1: A face-on double-lined binary star masquerading as a resonant planetary system; and consideration of rare false positives in radial velocity planet searches
• The SOPHIE search for northern extrasolar planets: VI. Three new hot Jupiters in multi-planet extrasolar systems
• Radial velocity variations in the young eruptive star EX Lup
• Revised Orbit and Transit Exclusion for HD 114762b
• WASP-26b: A 1-Jupiter-mass planet around an early-G-type star
• Photometric transit search for planets around cool stars from the western Italian Alps: A pilot study
• The first planet detected in the WTS: an inflated hot-Jupiter in a 3.35 day orbit around a late F-star
• The CORALIE survey for southern extrasolar planets XIV. HD 142022 b: a long-period planetary companion in a wide binary
• The curious case of HD41248. A pair of static signals buried behind red-noise
• Stellar jitter from variable gravitational redshift: implications for RV confirmation of habitable exoplanets
• WASP-40b: independent discovery of the 0.6-Mjup transiting exoplanet HAT-P-27b
• A Massive Planet to the Young Disc Star HD 81040
• Revisiting K2-233 spectroscopic time-series with multidimensional Gaussian Processes
• Measuring precise radial velocities and cross-correlation function line-profile variations using a Skew Normal density
• K2 reveals pulsed accretion driven by the 2 Myr old hot Jupiter CI Tau b
• Long-term stellar activity variations and their effect on radial-velocity measurements
• Planetary system around LTT 1445A unveiled by ESPRESSO: Multiple planets in a triple M-dwarf system
• The spectral impact of magnetic activity on disk-integrated HARPS-N solar observations: exploring new activity indicators
• Evidence of a Sub-Saturn around EPIC~211945201
• Kepler-447b: a hot-Jupiter with an extremely grazing transit
• Discovery of WASP-65b and WASP-75b: Two Hot Jupiters Without Highly Inflated Radii
• Binarity, activity and metallicity among late-type stars I. Methodology and application to HD 27536 and HD 216803
• Consistent radial velocities of classical Cepheids from the cross-correlation technique
• K2-60b and epic 216468514b. A sub-jovian and a jovian planet from the k2 mission
• A long period (P = 61.8-d) M5V dwarf eclipsing a Sun-like star from TESS and NGTS
• A search for planets in the metal-enriched binary HD 219542
• Transmission spectroscopy of the ultra-hot Jupiter MASCARA-4 b: Disentangling the hydrostatic and exospheric regimes of ultra-hot Jupiters
• Doppler search for exoplanet candidates and binaries in a CoRoT field using a multi-fiber spectrograph
• Gaussian processes for radial velocity modeling Better rotation periods and planetary parameters with the quasi-periodic kernel and constrained priors
• Optimising the H$\alpha$ index for the identification of activity signals in FGK stars. Improvement of the correlation between H$\alpha$ and CaII H&K
• The conjectured S-type retrograde planet in nu Octantis: more evidence including four years of iodine-cell radial velocities
• Mitigating stellar activity jitter with different line lists for least-squares deconvolution: analysis of a parametric and a randomised line selection
• Optical and near-infrared stellar activity characterization of the early M dwarf Gl~205 with SOPHIE and SPIRou
• A maximum entropy approach to detect close-in giant planets around active stars
• Spectroscopic Binary Mass Determination using Relativity
• The homogeneous characterisation of Ariel host stars
• WASP-147b, 160Bb, 164b and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts
• Dispersed Matter Planet Project Discoveries of Ablating Planets Orbiting Nearby Bright Stars
• Radial Velocity Survey for Planets around Young stars (RVSPY) A transiting warm super-Jovian planet around HD 114082, a young star with a debris disk
• EPIC 228735255b - An eccentric 6.57 day transiting hot Jupiter in Virgo
• The K2-ESPRINT Project II: Spectroscopic follow-up of three exoplanet systems from Campaign 1 of K2
• Planets around the evolved stars 24 Booties and $\gamma$ Libra: A 30d-period planet and a double giant-planet system in possible 7:3 MMR
• Magnitude-squared coherence: A powerful tool for disentangling Doppler planet discoveries from stellar activity
• Star-disk interaction in the T Tauri star V2129 Oph: An evolving accretion-ejection structure
• Planetary companions in K giants beta Cancri, mu Leonis, and beta Ursae Minoris
• Dynamical masses of M-dwarf binaries in young moving groups: I - The case of TWA 22 and GJ 2060
• HAT-P-42b and HAT-P-43b. Two Inflated Transiting Hot Jupiters from the HATNet Survey
• Spectroscopic binaries in the Solar Twin Planet Search program: from substellar-mass to M dwarf companions
• Systematic investigation of chemical abundances derived using IR spectra obtained with GIANO
• TOI-4010: A System of Three Large Short-Period Planets With a Massive Long-Period Companion
• The SOPHIE search for northern extrasolar planets-XIX. A system including a cold sub-Neptune potentially transiting a V = 6.5 star HD88986
• The CARMENES search for exoplanets around M dwarfs. Rotational variation in activity indicators of Ross 318, YZ CMi, TYC 3529-1437-1, and EV Lac
• The CARMENES search for exoplanets around M dwarfs. Variability on long timescales as seen in chromospheric indicators
• ELODIE metallicity-biased search for transiting Hot Jupiters V. An intermediate-period Jovian planet orbiting HD45652
• NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert
• Four Jovian planets around low-luminosity giant stars observed by the EXPRESS and PPPS
• Activity and telluric contamination in HARPS observations of Alpha Centauri B
• Transiting exoplanets from the CoRoT space mission XXVII. CoRoT-28b, a planet orbiting an evolved star, and CoRoT-29b, a planet showing an asymmetric transit
• Precession due to a close binary system: An alternative explanation for ν-Octantis?
• NGTS-14Ab: a Neptune-sized transiting planet in the desert
• EPIC229426032 b and EPIC246067459 b: discovery and characterization of two new transiting hot Jupiters from K2
• Stable accretion and episodic outflows in the young transition disk system GM Aurigae
• Line-depth-ratio temperatures for the close binary nu Octantis: new evidence supporting the conjectured retrograde planet
• Transiting planet candidate from K2 with the longest period
• A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113
• CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
• RVSPY -- Radial Velocity Survey for Planets around Young Stars. Target characterization and high-cadence survey
• The HADES RV Programme with HARPS-N at TNG XI. GJ 685 b: a warm super-Earth around an active M dwarf
• Radial Velocities as an Exoplanet Discovery Method
• Very Low-Mass Stellar and Substellar Companions to Solar-like Stars From MARVELS VI: A Giant Planet and a Brown Dwarf Candidate in a Close Binary System HD 87646
• An 11 Earth-Mass, Long-Period Sub-Neptune Orbiting a Sun-like Star
• The CARMENES search for exoplanets around M dwarfs Detection of a mini-Neptune around LSPM J2116+0234 and refinement of orbital parameters of a super-Earth around GJ 686 (BD+18 3421)
• Three super-Earths and a possible water world from TESS and ESPRESSO
• The SOPHIE search for northern extrasolar planets - XII. Three giant planets suitable for astrometric mass determination with Gaia
• K2-263b: A 50-day period sub-Neptune with a mass measurement using HARPS-N
• Solar-like oscillations and magnetic activity of the slow rotator EK Eri
• A warm super-Neptune around the G-dwarf star TOI-1710 revealed with TESS, SOPHIE and HARPS-N
• Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy
• The EBLM project X. Benchmark masses, radii and temperatures for two fully convective M-dwarfs using K2
• A Comprehensive Characterization of the 70 Virginis Planetary System
• Unsigned magnetic flux proxy from solar optical intensity spectra
• A 2:1 Mean-Motion Resonance Super-Jovian pair revealed by TESS, FEROS, and HARPS
• WASP-135b: a highly irradiated, inflated hot Jupiter orbiting a G5V star
• The HARPS search for southern extra-solar planets. XLVI: 12 super-Earths around the solar type stars HD39194, HD93385, HD96700, HD154088, and HD189567
• The HARPS search for southern extra-solar planets XL. Searching for Neptunes around metal-poor stars
• The Spitzer search for the transits of HARPS low-mass planets - II. Null results for 19 planets
• Characterization of the Wolf 1061 Planetary System
• Detection of an exoplanet around the evolved K giant HD 66141
• A 4.6-year period brown-dwarf companion interacting with the hot-Jupiter CoRoT-20 b
• FIESTA II. Disentangling stellar and instrumental variability from exoplanetary Doppler shifts in Fourier domain
• Another super-dense sub-Neptune in K2-182 b and refined mass measurements for K2-199 b and c
• Bisectors of the HARPS Cross-Correlation-Function. The dependence on stellar atmospheric parameters
• A BCool survey of stellar magnetic cycles
• Multi-Mask Least-Squares Deconvolution: Extracting RVs using tailored masks
• Hyades Member K2-136c: The Smallest Planet in an Open Cluster with a Precisely Measured Mass
• Detection of the 128 day radial velocity variations in the supergiant α Persei. Rotational modulations, pulsations, or a planet?
• Kepler main-sequence solar-like stars: surface rotation and magnetic-activity evolution
• Revisiting the multi-planetary system of the nearby star HD 20794: Confirmation of a low-mass planet in the habitable zone of a nearby G-dwarf
• Radial velocity homogeneous analysis of M dwarfs observed with HARPS I. Exoplanet detection and candidates
• Qatar Exoplanet Survey: Qatar-8b, 9b and 10b --- A Hot Saturn and Two Hot Jupiters
• The multi-line slope method for the measure of the effective magnetic field of the cool stars: an application to the solar like cycle of ε Eri
• Simulating Radial Velocity Observations of Trappist-1 with SPIRou
• EXPRES. II. Searching for Planets Around Active Stars: A Case Study of HD 101501
• Spectral Line Depth Variability in Radial Velocity Spectra
• The SOPHIE search for northern extrasolar planets. XVIII: Six new cold Jupiters, including one of the most eccentric exoplanet orbits
• TOI-1736 and TOI-2141: two systems including sub-Neptunes around solar analogs revealed by TESS and SOPHIE
• TOI-1296b and TOI-1298b observed with TESS and SOPHIE: Two hot Saturn-mass exoplanets with different densities around metal-rich stars
• HADES RV Programme with HARPS-N at TNG XIII. A sub-Neptune around the M dwarf GJ 720 A
• NGTS 15b, 16b, 17b and 18b: four hot Jupiters from the Next Generation Transit Survey
• Diving into the planetary system of Proxima with NIRPS -- Breaking the metre per second barrier in the infrared
• Periodic stellar variability from almost a million NGTS light curves
• The Lick-Carnegie Survey: A New Two-Planet System Around the Star HD 207832
• Mass determination of K2-19b and K2-19c from radial velocities and transit timing variations
• WASP-157b, a Transiting Hot Jupiter Observed with K2
• TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system
• New Periodograms Separating Orbital Radial Velocities and Spectral Shape Variation
• Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS
• TIC-320687387 B: a long-period eclipsing M-dwarf close to the hydrogen burning limit
• Accounting for stellar activity signals in radial-velocity data by using Change Point Detection techniques
• GRASS II: Simulations of Potential Granulation Noise Mitigation Methods
• The need for a public forecast of stellar activity to optimise exoplanet radial velocity detections & transmission spectroscopy
• TOI-1055 b: Neptunian planet characterised with HARPS, TESS, and CHEOPS
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N. III. HD 5583 and BD+15 2375 - two cool giants with warm companions
• The CARMENES search for exoplanets around M dwarfs. Line-by-line sensitivity to activity in M dwarfs
• The CARMENES search for exoplanets around M dwarfs. Revisiting the GJ 581 multi-planetary system with new Doppler measurements from CARMENES, HARPS, and HIRES
• Long period modulation of the classical T Tauri star CI Tau: evidence for an eccentric close-in massive planet at 0.17 au
• Wavelength Dependence of Activity-Induced Photometric Variations for Young Cool Stars in Hyades
• Millimag Precision Photometry of Southern Bright Stars with a 1-m Telescope and a Standard CCD
• Planets around evolved intermediate-mass stars III. Planet candidates and long-term activity signals in six open clusters
• Amplitude Modulation of Short-Timescale Hot Spot Variability
• Solar cycle variation in Sun-as-a-star Ca II 854.2 nm bisectors
• Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS
• Detailed stellar activity analysis and modelling of GJ 832: Reassessment of the putative habitable zone planet GJ 832c
• Characterisation of TOI-406 as showcase of the THIRSTEE program: A 2-planet system straddling the M-dwarf density gap
• Three Warm Jupiters orbiting TOI-6628, TOI-3837, TOI-5027 and one sub-Saturn orbiting TOI-2328
• Starspot induced effects in microlensing events with rotating source star
• Reducing activity-induced variations in a radial-velocity time series of the Sun as a star
• Characterization of Exoplanet-Host Stars
• The discovery of three hot Jupiters, NGTS-23b, 24b and 25b, and updated parameters for HATS-54b from the Next Generation Transit Survey
• Two transiting hot Jupiters from the WASP survey: WASP-150b and WASP-176b
• Evidence of a substellar companion around a very young T Tauri star
• Identifying Exoplanets with Deep Learning. IV. Removing Stellar Activity Signals from Radial Velocity Measurements Using Neural Networks
• A hot Jupiter transiting a mid-K dwarf found in the pre-OmegaCam Transit Survey
• Noise Sources in Photometry and Radial Velocities
• A Stellar Activity F-statistic for Exoplanet Surveys (SAFE)
• VPNEP: Detailed characterization of TESS targets around the Northern Ecliptic Pole
• Analysis of the public HARPS/ESO spectroscopic archive -- Jupiter-like planets around HD 103891 and HD 105779
• Advancing accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary
• A study of the frequency and characteristics of stellar companions and Jupiter-like planets in nearby open clusters
• The enigma of Li-rich giants and its relation with temporal variations observed in radial velocity and stellar activity signals
• TIC~257060897b: an inflated, low-density, hot-Jupiter transiting a rapidly evolving subgiant star
• Planet Hunters TESS V: a planetary system around a binary star, including a mini-Neptune in the habitable zone
• The complex structure of HH 110 as revealed from Integral Field Spectroscopy
• Qatar Exoplanet Survey: Qatar-7b -- A Very Hot Jupiter Orbiting a Metal Rich F-Star
• A multi-kiloGauss magnetic field driving the magnetospheric accretion process in EX Lupi
• H${}_{\alpha }$-activity and ages for stars in the SARG survey
• A Search for Exoplanets around Northern Circumpolar Stars. IV. Six Planet Candidates to the K Giants, HD 44385, HD 97619, HD 106574, HD 118904, HD 164428, and HD 202432
• Radii, masses, and transit-timing variations of the three-planet system orbiting the naked-eye star TOI-396
• GIARPS: the unique VIS-NIR high precision radial velocity facility in this world
• TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary
• Tracking Advanced Planetary Systems (TAPAS) with HARPS-N VII. Elder suns with low-mass companions
• HADES RV programme with HARPS-N at TNG XIV. A candidate super-Earth orbiting the M-dwarf GJ 9689 with a period close to half the stellar rotation period
• Gl 725A b: a potential super-Earth detected with SOPHIE and SPIRou in an M dwarf binary system at 3.5 pc
• On the incidence of planet candidates in open clusters and a planet confirmation
• A low-mass sub-Neptune planet transiting the bright active star HD 73344
• TOI-1199 b and TOI-1273 b: Two new transiting hot Saturns detected and characterized with SOPHIE and TESS
• Using Doppler Imaging to model stellar activity and search for planets around Sun-like stars
• New Dynamical State and Habitability of the HD 45364 Planetary System
• FR Cnc Revisited: Photometry, Polarimetry and Spectroscopy
• Detection and characterisation of a 106-day transiting Jupiter : TOI-2449 b / NGTS-36 b
• A Close-in Planet Orbiting Giant Star HD 167768
• HADES RV Programme with HARPS-N at TNG. XVI. A super-Earth in the habitable zone of the GJ 3998 multi-planet system
• Semi-supervised standardized detection of extrasolar planets
• L 363-38 b: a planet newly discovered with ESPRESSO orbiting a nearby M dwarf star
• Search for Exoplanets around Northern Circumpolar Stars- II. The Detection of Radial Velocity Variations in M Giant Stars HD 36384, HD 52030, and HD 208742
• The GAPS Programme at TNG -- XXIII. HD 164922 d: a close-in super-Earth discovered with HARPS-N in a system with a long-period Saturn mass companion
• Searching for Low-Mass Exoplanets Amid Stellar Variability with a Fixed Effects Linear Model of Line-by-Line Shape Changes
• Sunstardb: a database for the study of stellar magnetism and the solar-stellar connection
• TOI-2322: two transiting rocky planets close to the stellar rotation period and its first harmonic
• Search for Exoplanets around Northern Circumpolar Stars V. Three likely planetary companions to the giant stars HD 19615, HD 150010, and HD 174205
• The CARMENES search for exoplanets around M dwarfs : Understanding the wavelength dependence of radial velocity measurements
• Studying the variability of the He triplet to understand the detection limits of evaporating exoplanet atmospheres
• Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data
• A transiting rocky super-Earth and a non-transiting sub-Neptune orbiting the M dwarf TOI-771
• Deriving Iodine-free spectra for high-resolution echelle spectrographs
• Analysis of Gaia radial-velocity standards: stability and new substellar companion candidates
• A new third planet and the dynamical architecture of the HD33142 planetary system
• The RoPES project with HARPS and HARPS-N II. A third planet in the multi-planet system HD 176986
• The VELOCE modulation zoo III. Detecting additional pulsation modes in optical spectra of classical Cepheids using semi-partial distance correlation periodograms
• Radial velocities: direct application of Pierre Connes' shift finding algorithm to Cross-Correlation Functions
• An extensive radial velocity survey toward NGC 6253
• Near-IR and optical radial velocities of the active M dwarf star Gl 388 (AD Leo) with SPIRou at CFHT and SOPHIE at OHP: A 2.23 day rotation period and no evidence for a corotating planet
• The impact of two non-transiting planets and stellar activity on mass determinations for the super-Earth CoRoT-7b
• Modeling the RV and BVS of active stars
• BEBOP II: Sensitivity to sub-Saturn circumbinary planets using radial-velocities
• The influence of stellar activity on detecting Earth-like planets via nulling interferometry
• Modelling solar radial velocities and photometric variability with SOAPv4
• Spectral Ratio Analysis: probing of a new suite of stellar activity indicators as a tool for astrophysical noise mitigation
• Dynamical architecture of the HD 107148 system
• A transiting hot Jupiter with two outer siblings orbiting an intermediate-mass post main-sequence star
• $\mathtt{KOBEsim}$: a Bayesian observing strategy algorithm for planet detection in radial velocity blind-search surveys