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Related papers: HD 23472: A multi-planetary system with three supe…

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We report the discovery of four super-Earth planets around HD 215152, with orbital periods of 5.76, 7.28, 10.86, and 25.2 d, and minimum masses of 1.8, 1.7, 2.8, and 2.9 M_Earth respectively. This discovery is based on 373 high-quality…

We present the discovery and characterisation of two transiting planets observed by \textit{TESS} in the light curves of the young and bright (V=9.67) star HD73583 (TOI-560). We perform an intensive spectroscopic and photometric space- and…

Earth and Planetary Astrophysics · Physics 2022-03-09 O. Barragán , D. J. Armstrong , D. Gandolfi , I. Carleo , A. A. Vidotto , C. Villarreal D'Angelo , A. Oklopčić , H. Isaacson , D. Oddo , K. Collins , M. Fridlund , S. G. Sousa , C. M. Persson , C. Hellier , S. Howell , A. Howard , S. Redfield , N. Eisner , I. Y. Georgieva , D. Dragomir , D. Bayliss , L. D. Nielsen , B. Klein , S. Aigrain , M. Zhang , J. Teske , J D. Twicken , J. Jenkins , M. Esposito , V. Van Eylen , F. Rodler , V. Adibekyan , J. Alarcon , D. R. Anderson , J. M. Akana Murphy , D. Barrado , S. C. C. Barros , B. Benneke , F. Bouchy , E. M. Bryant , P. Butler , J. Burt , J. Cabrera , S. Casewell , P. Chaturvedi , R. Cloutier , W. D. Cochran , J. Crane , I. Crossfield , N. Crouzet , K. I. Collins , F. Dai , H. J. Deeg , A. Deline , O. D. S. Demangeon , X. Dumusque , P. Figueira , E. Furlan , C. Gnilka , M. R. Goad , E. Goffo , F. Gutiérrez-Canales , A. Hadjigeorghiou , Z. Hartman , A. P. Hatzes , M. Harris , B. Henderson , T. Hirano , S. Hojjatpanah , S. Hoyer , P. Kabáth , J. Korth , J. Lillo-Box , R. Luque , M. Marmier , T. Močnik , A. Muresan , F. Murgas , E. Nagel , H. L. M. Osborne , A. Osborn , H. P. Osborn , E. Palle , M. Raimbault , G. R. Ricker , R A. Rubenzahl , C. Stockdale , N. C. Santos , N. Scott , R. P. Schwarz , S. Shectman , M. Raimbault , S. Seager , D. Ségransan , L. M. Serrano , M. Skarka , A. M. S. Smith , J. Šubjak , T. G. Tan , S. Udry , C. Watson , P. J. Wheatley , R. West , J. N. Winn , S. X. Wang , A. Wolfgang , C. Ziegler

Multi-planet systems exhibit a diversity of architectures that diverge from the solar system and contribute to the topic of exoplanet demographics. Radial velocity (RV) surveys form a crucial component of exoplanet surveys, as their long…

We present radial velocity measurements of the star HD 28471, observed by HARPS at the ESO 3.6 m telescope over a baseline of $\sim19$ years. We have searched for planetary companions to HD 28471 using kima, a trans-dimensional diffusive…

Earth and Planetary Astrophysics · Physics 2025-08-26 A. T. Stevenson , C. A. Haswell , J. R. Barnes , M. R. Standing , J. K. Barstow , Z. O. B. Ross , A. V. Freckelton , D. Staab

We report the discovery of two super-Earth mass planets orbiting the nearby K0.5 dwarf HD 7924 which was previously known to host one small planet. The new companions have masses of 7.9 and 6.4 M$_\oplus$, and orbital periods of 15.3 and…

Multi-planet systems are valuable arenas for investigating exoplanet architectures and comparing planetary siblings. TOI-1246 is one such system, with a moderately bright K dwarf ($\rm{V=11.6,~K=9.9}$) and four transiting sub-Neptunes…

Doppler observations from Keck Observatory have revealed a triple planet system orbiting the nearby mid-type K dwarf, HIP 57274. The inner planet, HIP 57274b, is a super-Earth with \msini\ = 11.6 \mearth (0.036 \mjup), an orbital period of…

We present ground and space-based photometric observations of TOI-270 (L231-32), a system of three transiting planets consisting of one super-Earth and two sub-Neptunes discovered by TESS around a bright (K-mag=8.25) M3V dwarf. The planets…

This paper reports on the detection of a planetary system with three Super-Earths orbiting HD40307. HD40307 is a K2V metal-deficient star at a distance of only 13 parsec, part of the HARPS GTO high-precision planet-search programme. The…

Astrophysics · Physics 2009-11-13 M. Mayor , S. Udry , C. Lovis , F. Pepe , D. Queloz , W. Benz , J. -L. Bertaux , F. Bouchy , C. Mordasini , D. Segransan

We report the discovery and characterisation of the multi-planetary system around TOI-4311, a K dwarf kinematically between the Galactic thick disk and Hercules stream. TOI-4311 hosts an ultra-short-period super-Earth (P$\sim$0.99 d,…

Earth and Planetary Astrophysics · Physics 2026-05-13 Yoshi Nike Emilia Eschen , Thomas G. Wilson , Andrew Collier Cameron , Alexander James Mustill , Jo Ann Egger , Solène Ulmer-Moll , Davide Gandolfi , Alexis M. S. Smith , Olivier D. S. Demangeon , Sérgio G. Sousa , Andrea Bonfanti , Alexandre C. M. Correia , Vardan Adibekyan , Gaia Lacedelli , Alexis Brandeker , Camilla Pezzotti , Babatunde Akinsanmi , Yann Alibert , Roi Alonso , Tamas Bárczy , David Barrado , Susana C. C. Barros , Wolfgang Baumjohann , Willy Benz , Nicolas Billot , Luca Borsato , Christopher Broeg , Amadeo Castro-González , Szilard Csizmadia , Patricio E. Cubillos , Melvyn B. Davies , Magali Deleuil , Adrien Deline , Brice-Olivier Demory , Aliz Derekas , Giuseppe Di Persio , Billy Edwards , David Ehrenreich , Anders Erikson , Andrea Fortier , Luca Fossati , Malcolm Fridlund , Kosmas Gazeas , Michaël Gillon , Manuel Güdel , Maximilian N. Günther , Alexis Heitzmann , Ch. Helling , Kate G. Isaak , Jon M. Jenkins , Tatiana Keller , Laszlo L. Kiss , Daniel Kitzmann , Judith Korth , Kristine W. F. Lam , Jacques Laskar , Alain Lecavelier des Etangs , Adrien Leleu , Monika Lendl , Demetrio Magrin , Pierre F. L. Maxted , Bruno Merín , Christoph Mordasini , Valerio Nascimbeni , Göran Olofsson , Hugh P. Osborn , Roland Ottensamer , Isabella Pagano , Enric Pallé , Gisbert Peter , Glen Petitpas , Daniele Piazza , Giampaolo Piotto , Don Pollacco , Didier Queloz , Roberto Ragazzoni , Nicola Rando , Heike Rauer , Ignasi Ribas , Nuno C. Santos , Gaetano Scandariato , Damien Ségransan , Avi Shporer , André M. Silva , Attila E. Simon , Richard Southworth , Manu Stalport , Sophia Sulis , Gyula M. Szabó , Stéphane Udry , Bernd Ulmer , Valérie Van Grootel , Julia Venturini , Eva Villaver , Nicholas A. Walton , Sebastian Wolf , Carl Ziegler , Tiziano Zingales

We report the discovery of a planetary system around HD9446, performed from radial velocity measurements secured with the spectrograph SOPHIE at the 193-cm telescope of the Haute-Provence Observatory during more than two years. At least two…

We present new, high-precision Doppler radial velocity (RV) data sets for the nearby K3V star HD 219134. The data include 175 velocities obtained with the HIRES Spectrograph at the Keck I Telescope, and 101 velocities obtained with the Levy…

We present precision radial velocity (RV) data sets from Keck-HIRES and from Lick Observatory's new Automated Planet Finder Telescope and Levy Spectrometer on Mt. Hamilton that reveal a multiple-planet system orbiting the nearby, slightly…

A crucial chemical link between stars and their orbiting exoplanets is thought to exist. If universal, this connection could affect the formation and evolution of all planets. Therefore, this potential vital link needs testing by…

Earth and Planetary Astrophysics · Physics 2025-10-15 Yoshi Nike Emilia Eschen , Thomas G. Wilson , Andrea Bonfanti , Carina M. Persson , Sérgio G. Sousa , Monika Lendl , Alexis Heitzmann , Attila E. Simon , Göran Olofsson , Amadeo Castro-González , Jo Ann Egger , Luca Fossati , Alexander James Mustill , Hugh P. Osborn , Hugo G. Vivien , Yann Alibert , Roi Alonso , Tamas Bárczy , David Barrado , Susana C. C. Barros , Wolfgang Baumjohann , Willy Benz , Nicolas Billot , Luca Borsato , Alexis Brandeker , Christopher Broeg , Maximilian Buder , Douglas A. Caldwell , Andrew Collier Cameron , Alexandre C. M. Correia , Szilard Csizmadia , Patricio E. Cubillos , Melvyn B. Davies , Magali Deleuil , Adrien Deline , Olivier D. S. Demangeon , Brice-Olivier Demory , Aliz Derekas , Billy Edwards , David Ehrenreich , Anders Erikson , Jacopo Farinato , Andrea Fortier , Malcolm Fridlund , Davide Gandolfi , Kosmas Gazeas , Michaël Gillon , Robert Goeke , Manuel Güdel , Maximilian N. Günther , Johann Hasiba , Ch. Helling , Kate G. Isaak , Jon M. Jenkins , Tatiana Keller , Laszlo L. Kiss , Daniel Kitzmann , Judith Korth , Kristine W. F. Lam , Jacques Laskar , Alain Lecavelier des Etangs , Adrien Leleu , Demetrio Magrin , Pierre F. L. Maxted , Bruno Merín , Christoph Mordasini , Valerio Nascimbeni , Roland Ottensamer , Isabella Pagano , Enric Pallé , Gisbert Peter , Daniele Piazza , Giampaolo Piotto , Don Pollacco , Didier Queloz , Roberto Ragazzoni , Nicola Rando , Francesco Ratti , Heike Rauer , Ignasi Ribas , Nuno C. Santos , Gaetano Scandariato , Damien Ségransan , Avi Shporer , Alexis M. S. Smith , Manu Stalport , Sophia Sulis , Gyula M. Szabó , Stéphane Udry , Solène Ulmer-Moll , Valérie Van Grootel , Julia Venturini , Eva Villaver , Nicholas A. Walton , David Watanabe , Sebastian Wolf , Carl Ziegler

Precise radial-velocity measurements for data acquired with the HARPS spectrograph infer that three planets orbit the M4 dwarf star GJ876. In particular, we confirm the existence of planet "d", which orbits every 1.93785 days. We find that…

Earth and Planetary Astrophysics · Physics 2010-09-08 A. C. M. Correia , J. Couetdic , J. Laskar , X. Bonfils , M. Mayor , J. -L. Bertaux , F. Bouchy , X. Delfosse , T. Forveille , C. Lovis , F. Pepe , C. Perrier , D. Queloz , S. Udry

We present two new planetary systems found around cool dwarf stars with data from the K2 mission. The first system was found in K2-239 (EPIC 248545986), char- acterized in this work as M3.0V and observed in the 14th campaign of K2. It…

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