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We report the detection of a Jupiter-mass planet discovered with the SOPHIE spectrograph mounted on the 1.93-m telescope at the Haute-Provence Observatory. The new planet orbits HD109246, a G0V star slightly more metallic than the Sun.…

Initially designed to discover short-period planets, the N2K campaign has since evolved to discover new worlds at large separations from their host stars. Detecting such worlds will help determine the giant planet occurrence at semi-major…

We report detections of new exoplanets from a radial velocity (RV) survey of metal-rich FGK stars by using three telescopes. By optimizing our RV analysis method to long time-baseline observations, we have succeeded in detecting five new…

We present 8 years of high-precision radial velocity (RV) data for HD 204313 from the 2.7 m Harlan J. Smith Telescope at McDonald Observatory. The star is known to have a giant planet (M sin i = 3.5 M_J) on a ~1900-day orbit, and a…

We report two microlensing events, KMT-2017-BLG-1038 and KMT-2017-BLG-1146 that are caused by planetary systems. These events were discovered by KMTNet survey observations from the $2017$ bulge season. The discovered systems consist of a…

We report the discovery from K2 of two transiting hot Jupiter systems. K2-295 (observed in Campaign 8) is a K5 dwarf which hosts a planet slightly smaller than Jupiter, orbiting with a period of 4.0 d. We have made an independent discovery…

We report the detection of three new exoplanets from Keck Observatory. HD 163607 is a metal-rich G5IV star with two planets. The inner planet has an observed orbital period of 75.29 $\pm$ 0.02 days, a semi-amplitude of 51.1 $\pm$ 1.4 \ms,…

We report a spectroscopic orbit with period P = 3.52433 +/- 0.00027 days for the planetary companion that transits the solar-type star HD209458. For the metallicity, mass, and radius of the star we derive [Fe/H] = 0.00 +/- 0.02, M = 1.1 +/-…

We present high-precision radial velocity (RV) observations of four solar-type (F7-G5) stars - HD 79498, HD 155358, HD 197037, and HD 220773 - taken as part of the McDonald Observatory Planet Search Program. For each of these stars, we see…

Precision Doppler velocity measurements from the 3.9--m Anglo-Australian Telescope reveal a planet with a 6 year period orbiting the G5 dwarf HD 70642. The a = 3.3 AU orbit has a low eccentricity (e = 0.1), and the minimum (\msini) mass of…

We report the characterization and independant detection of K2-60b, as well as the detection and characterization of EPIC 216468514b, two transiting hot gaseous planets from the K2 space mission. We confirm the planetary nature of the two…

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 report the discovery of a new planet candidate orbiting the subgiant star HD118203 with a period of P=6.1335 days. The best Keplerian solution yields an eccentricity e=0.31 and a minimum mass m2sin(i)=2.1MJup for the planet. This star…

Astrophysics · Physics 2016-08-30 R. Da Silva , S. Udry , F. Bouchy , M. Mayor , C. Moutou , F. Pont , D. Queloz , N. C. Santos , D. Segransan , S. Zucker

In an effort to determine accurate orbital and physical properties of a large number of bright stars, a method was developed to fit simultaneously stellar parameters (masses, luminosities, effective temperatures), distance, and orbits to…

Solar and Stellar Astrophysics · Physics 2024-10-21 Dinko Nazor , Andrei Tokovinin

Precise radial-velocity measurements with the HARPS spectrograph reveal the presence of two planets orbiting the solar-type star HD45364. The companion masses are 0.187 Mjup and 0.658 Mjup, with semi-major axes of 0.681 AU and 0.897 AU, and…

Earth and Planetary Astrophysics · Physics 2009-02-04 A. C. M. Correia , S. Udry , M. Mayor , W. Benz , J. -L. Bertaux , F. Bouchy , J. Laskar , C. Lovis , C. Mordasini , F. Pepe , D. Queloz

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…

We report the discovery of a 1.32$^{+0.10}_{-0.10}$ $\mathrm{M_{\rm Jup}}$ planet orbiting on a 75.12 day period around the G3V $10.8^{+2.1}_{-3.6}$ Gyr old star TOI-5542 (TIC 466206508; TYC 9086-1210-1). The planet was first detected by…

We present an update to seven stars with long-period planets or planetary candidates using new and archival radial velocities from Keck-HIRES and literature velocities from other telescopes. Our updated analysis better constrains orbital…

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