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Related papers: Orbital characterization of the \beta Pictoris b g…

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Context. The 51 Eridani system harbors a complex architecture with its primary star forming a hierarchical system with the binary GJ 3305AB at a projected separation of 2000 au, a giant planet orbiting the primary star at 13 au, and a…

We report the discovery by the HATSouth network of HATS-18 b: a 1.980 +/- 0.077 Mj, 1.337 +0.102 -0.049 Rj planet in a 0.8378 day orbit, around a solar analog star (mass 1.037 +/- 0.047 Msun, and radius 1.020 +0.057 -0.031 Rsun) with…

A deep (~70%) and extended (~150 days) eclipse was seen towards the young multiple stellar system V773 Tau in 2010. We interpret it as due to the passage of a circumbinary disk around the B components moving in front of the A components.…

We present the discovery and characterization of a giant planet orbiting the young Sun-like star Kepler-63 (KOI-63, $m_{\rm Kp} = 11.6$, $T_{\rm eff} = 5576$ K, $M_\star = 0.98\, M_\odot$). The planet transits every 9.43 days, with apparent…

We performed a radial velocity (RV) monitoring of the 40 Myr old star DS Tuc A with HARPS at the ESO-3.6m to determine the planetary mass of its 8.14-days planet, first revealed by TESS. We also observed two planetary transits with HARPS…

Earth and Planetary Astrophysics · Physics 2021-06-09 S. Benatti , M. Damasso , F. Borsa , D. Locci , I. Pillitteri , S. Desidera , A. Maggio , G. Micela , S. Wolk , R. Claudi , L. Malavolta , D. Modirrousta-Galian

We report the discovery of an Earth-sized planet ($1.16\pm 0.19 R_\oplus$) in an 8.5-hour orbit around a late G-type star (KIC 8435766, Kepler-78). The object was identified in a search for short-period planets in the {\it Kepler} database…

Earth and Planetary Astrophysics · Physics 2015-06-16 Roberto Sanchis-Ojeda , Saul Rappaport , Joshua N. Winn , Alan M. Levine , Michael C. Kotson , David W. Latham , Lars A. Buchhave

Giant planets on long period orbits around the nearest stars are among the easiest to directly image. Unfortunately these planets are difficult to fully constrain by indirect methods, e.g., transit and radial velocity (RV). In this study,…

We study the Kepler object Kepler-432, an evolved star ascending the red giant branch. By deriving precise radial velocities from multi-epoch high-resolution spectra of Kepler-432 taken with the CAFE spectrograph at the 2.2m telescope of…

We present Keck/OSIRIS 1.1-1.8 um adaptive optics integral field spectroscopy of the planetary-mass companion to GSC 06214-00210, a member of the ~5 Myr Upper Scorpius OB association. We infer a spectral type of L0+/-1, and our spectrum…

Earth and Planetary Astrophysics · Physics 2015-05-30 Brendan P. Bowler , Michael C. Liu , Adam L. Kraus , Andrew W. Mann , Michael J. Ireland

It has been suggested that giant planet occurrence peaks for stars with $M_{\ast}~\approx~3~M_{\odot}$ at a value a factor of 4 higher than observed for solar-mass stars. This population of giant planets predicted to frequently orbit…

Earth and Planetary Astrophysics · Physics 2025-07-02 Sihao Cheng , Kevin C. Schlaufman , Ilaria Caiazzo

We have carried out high contrast imaging of 70 young, nearby B and A stars to search for brown dwarf and planetary companions as part of the Gemini NICI Planet-Finding Campaign. Our survey represents the largest, deepest survey for planets…

Molecular mapping is a supervised method exploiting the spectral diversity of integral field spectrographs to detect and characterize resolved exoplanets blurred into the stellar halo. We present an evolution of the method to remove the…

Earth and Planetary Astrophysics · Physics 2024-02-14 F. Kiefer , M. Bonnefoy , B. Charnay , A. Boccaletti , A. -M. Lagrange , G. Chauvin , B. Bézard , M. Mâlin

An edge-on debris disk was detected in 2015 around the young, nearby A0V star HD 110058. The disk showed features resembling those seen in the disk of beta Pictoris that could indicate the presence of a perturbing planetary-mass companion…

We report the discovery and confirmation of a transiting circumbinary planet (PH1b) around KIC 4862625, an eclipsing binary in the Kepler field. The planet was discovered by volunteers searching the first six Quarters of publicly available…

We measure the angle between the planetary orbit and the stellar rotation axis in the transiting planetary system CoRoT-1, with new HIRES/Keck and FORS/VLT high-accuracy photometry. The data indicate a highly tilted system, with a projected…

HD 142527 A is a young and massive Herbig Ae/Be star surrounded by a highly structured disc. The disc shows numerous morphological structures, such as spiral arms, a horseshoe region of dust emission, a set of shadows cast by an inner disc…

Solar and Stellar Astrophysics · Physics 2024-02-07 M. Nowak , S. Rowther , S. Lacour , F. Meru , R. Nealon , D. J. Price

Planets can form and survive in close binaries, although dynamical interactions with the secondary component can actually significantly impact the giant planet formation and evolution. Rare close binaries hosting giant planets offer…

Earth and Planetary Astrophysics · Physics 2010-09-30 G. Chauvin , H. Beust , A. -M. Lagrange , A. Eggenberger

The search for exomoons, or moons in other star systems, has attracted significant interest in recent years, driven both by advancements in detection sensitivity and by the expanding population of known exoplanets. The $\beta$ Pictoris…

Earth and Planetary Astrophysics · Physics 2026-02-05 Isabella Macias , Sydney Jenkins , Andrew Vanderburg

HD 135344 AB is a young visual binary system that is best known for the protoplanetary disk around the secondary star. The circumstellar environment of the A0-type primary star, on the other hand, is already depleted. HD 135344 A is…

Earth and Planetary Astrophysics · Physics 2025-07-09 T. Stolker , M. Samland , L. B. F. M. Waters , M. E. van den Ancker , W. O. Balmer , S. Lacour , M. L. Sitko , J. J. Wang , M. Nowak , A. -L. Maire , J. Kammerer , G. P. P. L. Otten , R. Abuter , A. Amorim , M. Benisty , J. -P. Berger , H. Beust , S. Blunt , A. Boccaletti , M. Bonnefoy , H. Bonnet , M. S. Bordoni , G. Bourdarot , W. Brandner , F. Cantalloube , P. Caselli , B. Charnay , G. Chauvin , A. Chavez , A. Chomez , E. Choquet , V. Christiaens , Y. Clénet , V. Coudé du Foresto , A. Cridland , R. Davies , R. Dembet , J. Dexter , C. Dominik , A. Drescher , G. Duvert , A. Eckart , F. Eisenhauer , N. M. Förster Schreiber , P. Garcia , R. Garcia Lopez , T. Gardner , E. Gendron , R. Genzel , S. Gillessen , J. H. Girard , S. Grant , X. Haubois , G. Heißel , Th. Henning , S. Hinkley , S. Hippler , M. Houllé , Z. Hubert , L. Jocou , M. Keppler , P. Kervella , L. Kreidberg , N. T. Kurtovic , A. -M. Lagrange , V. Lapeyrère , J. -B. Le Bouquin , D. Lutz , F. Mang , G. -D. Marleau , A. Mérand , M. Min , P. Mollière , J. D. Monnier , C. Mordasini , D. Mouillet , E. Nasedkin , T. Ott , C. Paladini , T. Paumard , K. Perraut , G. Perrin , O. Pfuhl , N. Pourré , L. Pueyo , S. P. Quanz , D. C. Ribeiro , E. Rickman , Z. Rustamkulov , J. Shangguan , T. Shimizu , D. Sing , J. Stadler , O. Straub , C. Straubmeier , E. Sturm , L. J. Tacconi , E. F. van Dishoeck , A. Vigan , F. Vincent , S. D. von Fellenberg , F. Widmann , T. O. Winterhalder , J. Woillez , S. Yazici

We present new observations of a transit of the 111-day-period exoplanet HD80606b. Using the Spitzer Space Telescope and its IRAC camera on the post-cryogenic mission, we performed a 19-hour-long photometric observation of HD80606 that…