Letteratura scientifica selezionata sul tema "Radial velocity (HARPS. SOPHIE...)"
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Articoli di riviste sul tema "Radial velocity (HARPS. SOPHIE...)":
Rey, J., F. Bouchy, M. Stalport, M. Deleuil, G. Hébrard, J. M. Almenara, R. Alonso et al. "Brown dwarf companion with a period of 4.6 yr interacting with the hot Jupiter CoRoT-20 b". Astronomy & Astrophysics 619 (novembre 2018): A115. http://dx.doi.org/10.1051/0004-6361/201833180.
Husnoo, Nawal, Frédéric Pont, Tsevi Mazeh, Daniel Fabrycky, Guillaume Hébrard e Claire Moutou. "Revisiting the eccentricities of hot Jupiters". Proceedings of the International Astronomical Union 6, S276 (ottobre 2010): 243–47. http://dx.doi.org/10.1017/s1743921311020254.
Borgniet, S., A. M. Lagrange, N. Meunier, F. Galland, L. Arnold, N. Astudillo-Defru, J. L. Beuzit et al. "Extrasolar planets and brown dwarfs around AF-type stars". Astronomy & Astrophysics 621 (gennaio 2019): A87. http://dx.doi.org/10.1051/0004-6361/201833431.
Grandjean, A., A. M. Lagrange, N. Meunier, P. Rubini, S. Desidera, F. Galland, S. Borgniet et al. "A SOPHIE RV search for giant planets around young nearby stars (YNS)". Astronomy & Astrophysics 650 (giugno 2021): A39. http://dx.doi.org/10.1051/0004-6361/202039672.
Cretignier, M., X. Dumusque, N. C. Hara e F. Pepe. "YARARA: Significant improvement in RV precision through post-processing of spectral time series". Astronomy & Astrophysics 653 (settembre 2021): A43. http://dx.doi.org/10.1051/0004-6361/202140986.
Dumusque, X., M. Cretignier, D. Sosnowska, N. Buchschacher, C. Lovis, D. F. Phillips, F. Pepe et al. "Three years of HARPS-N high-resolution spectroscopy and precise radial velocity data for the Sun". Astronomy & Astrophysics 648 (aprile 2021): A103. http://dx.doi.org/10.1051/0004-6361/202039350.
Bonfils, X., J. M. Almenara, R. Cloutier, A. Wünsche, N. Astudillo-Defru, Z. Berta-Thompson, F. Bouchy et al. "Radial velocity follow-up of GJ1132 with HARPS". Astronomy & Astrophysics 618 (ottobre 2018): A142. http://dx.doi.org/10.1051/0004-6361/201731884.
Damasso, M., A. S. Bonomo, N. Astudillo-Defru, X. Bonfils, L. Malavolta, A. Sozzetti, E. Lopez et al. "Eyes on K2-3: A system of three likely sub-Neptunes characterized with HARPS-N and HARPS". Astronomy & Astrophysics 615 (luglio 2018): A69. http://dx.doi.org/10.1051/0004-6361/201732459.
Zhao, Lily L., Xavier Dumusque, Eric B. Ford, Joe Llama, Annelies Mortier, Megan Bedell, Khaled Al Moulla et al. "The Extreme Stellar-signals Project. III. Combining Solar Data from HARPS, HARPS-N, EXPRES, and NEID". Astronomical Journal 166, n. 4 (27 settembre 2023): 173. http://dx.doi.org/10.3847/1538-3881/acf83e.
Delisle, J. B., D. Ségransan, X. Dumusque, R. F. Diaz, F. Bouchy, C. Lovis, F. Pepe et al. "The HARPS search for southern extra-solar planets". Astronomy & Astrophysics 614 (giugno 2018): A133. http://dx.doi.org/10.1051/0004-6361/201732529.
Tesi sul tema "Radial velocity (HARPS. SOPHIE...)":
Santerne, Alexandre. "La caractérisation des exoplanètes en transit par vélocimétrie radiale". Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4800/document.
The search and characterization of transiting extrasolar planets (i.e. that pass in front of their host star, as seen from the Earth) is an important domain of planetology since these planets constrain the formation, evolution and migration process of planetary systems. The CoRoT (CNES) and Kepler (NASA) space missions permit, these last years, to discover several thousand of transiting-planet candidates. However, these planet candidates need to be confirmed in order to exclude all false positive scenario that can mimic a planetary transit. For that, one of the method consist on performing radial velocity follow-up observations to measure the transiting object's mass and orbital parameters and thus, to determine the nature of planet candidates.During my PhD thesis, I tried to resolve the nature of transiting planet candidates from the CoRoT and Kepler space missions. For that, I performed follow-up observations with the SOPHIE (OHP) and HARPS (ESO) spectrographs that were used to discover several new transiting extrasolar planets. I also measured the Kepler false-positive rate, equal to 35% for giant close-in exoplanet candidates, contradicting previous estimations, much more optimistic.I also participate to the development of a new software, called "PASTIS", which objective is to validate statistically low-mass transiting exoplanets out of reach for current spectrographs. This new tool will, in a near future, validate tens of low-mass planets from the CoRoT and Kepler space missions
Philipot, Florian. "Vers une recherche exhaustive des planètes géantes autour des étoiles proches de type solaire". Electronic Thesis or Diss., Université Paris sciences et lettres, 2023. http://www.theses.fr/2023UPSLO008.
The detection of the first exoplanets in the 1990s opened a new era in the study of planets. Today, thanks to increasingly powerful instruments, several hundred exoplanets (hot Jupiters, Super-Earths, multiple systems...) are discovered every year. Thanks to this wide variety of exoplanets, it is possible to study the distribution (distance, mass, eccentricity...) of these objects in order to better constrain the formation and evolution models of planetary system. Nevertheless, each detection method has its own limitations and detection biases. One aim of this thesis was to identify the limitations of the various detection methods, in particular those related to radial velocities (RV), and to improve the characterization of companions detected by RV.As a first step, I tested the robustness of studies aimed at determining the radial distribution of giant planets. Analysis of RV data from stars hosting long-period planets, the impact of stellar activity and the hypothesis made in completeness calculations, allowed us to demonstrate that statistical RV studies were not robust beyond 7-8 AU. Subsequently, I combined RV data with available absolute and relative astrometry measurements to improve the characterization of long-period sub-stellar companions. This study allowed us to precisely constrain the orbital parameters and, above all, the mass of seven companions detected in RV. It also highlighted the importance of coupling RV data with other measurements to accurately determine the nature of a companion. Finally, I used measurements of stars' proper motion anomalies (PMa), derived from Hipparcos and Gaia absolute astrometry, to search for new sub-stellar companions in the HARPS/VLT spectrograph archive. This analysis enabled me to improve the characterization of 14 sub-stellar companions, and to discover three new brown dwarfs and seven new exoplanets. I also demonstrated the effectiveness of using PMa measurements to optimize the search for sub-stellar companions
Atti di convegni sul tema "Radial velocity (HARPS. SOPHIE...)":
Wildi, François, Francesco Pepe, Bruno Chazelas, Gaspare Lo Curto e Ch Lovis. "A Fabry-Perot calibrator of the HARPS radial velocity spectrograph: performance report". In SPIE Astronomical Telescopes + Instrumentation, a cura di Ian S. McLean, Suzanne K. Ramsay e Hideki Takami. SPIE, 2010. http://dx.doi.org/10.1117/12.857951.
Perruchot, S., F. Bouchy, B. Chazelas, R. F. Díaz, G. Hébrard, K. Arnaud, L. Arnold et al. "Higher-precision radial velocity measurements with the SOPHIE spectrograph using octagonal-section fibers". In SPIE Optical Engineering + Applications, a cura di Stuart Shaklan. SPIE, 2011. http://dx.doi.org/10.1117/12.892466.
Wildi, Francois, Francesco Pepe, Bruno Chazelas, Gaspare Lo Curto e Christophe Lovis. "The performance of the new Fabry-Perot calibration system of the radial velocity spectrograph HARPS". In SPIE Optical Engineering + Applications, a cura di Stuart Shaklan. SPIE, 2011. http://dx.doi.org/10.1117/12.901550.