Browsing A) Producción científica UCSC by Author "Udry, S."

Now showing items 1-11 of 11

  • A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS 

    Astudillo Defru, Nicola; Cloutier, Ryan; Wang, S. X.; Teske, J.; Brahm, R.; Hellier, C.; Ricker, G.; Vanderspek, R.; Latham, D.; Seager, S.; Winn, J. N.; Jenkins, J. M.; Collins, Karen A.; Stassun, K. G.; Ziegler, C.; Almenara, José Manuel; Anderson, David R.; Artigau, Étienne; Bonfils, X.; Bouchy, F.; Briceño, C.; Butler, R. P.; Charbonneau, D.; Conti, Dennis M.; Crane, J.; Crossfield, Ian J. M.; Davies, M.; Delfosse, X.; Díaz, R. F.; Doyon, R.; Dragomir, D.; Eastman, J. D.; Espinoza, N.; Essack, Z.; Feng, F.; Figueira, P.; Forveille, T.; Gan, T.; Glidden, A.; Guerrero, N.; Hart, R.; Henning, Th.; Horch, E. P.; Isopi, G.; Jenkins, J. S.; Jordán, A.; Kielkopf, J. F.; Law, N.; Lovis, C.; Mallia, F.; Mann, A. W.; De Medeiros, J. R.; Melo, C.; Mennickent, R. E.; Mignon, L.; Murgas. F.; Nusdeo, D. A.; Pepe, F.; Relles, H. M.; Rose, M.; Santos, N. C.; Ségransan, D.; Shectman, S.; Shporer, A.; Smith, J. C.; Torres, P.; Udry, S.; Villaseñor, J.; Winters, J. G.; Zhou, G. (2020-04)
    We report the detection of a transiting super-Earth-sized planet (R = 1.39 ± 0.09 R⊕) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 ± 0.02 pc. The host star was observed ...

  • Characterization of the L 98-59 multi-planetary system with HARPS Mass characterization of a hot super-Earth, a sub-Neptune, and a mass upper limit on the third planet 

    Cloutier, Ryan; Astudillo Defru, Nicola; Bonfils, X.; Jenkins, J.S.; Berdiñas, Z.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J.; Jenkins, J. M.; Almenara, José Manuel; Bouchy, F.; Delfosse, X.; Díaz, M. R.; Díaz, R. F.; Doyon, R.; Figueira, P.; Forveille, T.; Kurtovic, N. T.; Lovis, C.; Mayor, M.; Menou, K.; Morgan, E.; Morris, R.; Muirhead, P.; Murgas, F.; Pepe, F.; Santos, N. C.; Ségransan, D.; Smith, J. C.; Tenenbaum, P.; Torres, G.; Udry, S.; Vezie, M.; Villasenor, J. (2019-09)
    Aims. L 98-59 (TIC 307210830, TOI-175) is a nearby M3 dwarf around which TESS revealed three small transiting planets (0.80, 1.35, 1.57 Earth radii) in a compact configuration with orbital periods shorter than 7.5 days. ...

  • Detailed stellar activity analysis and modelling of GJ 832. Reassessment of the putative habitable zone planet GJ 832c 

    Gorrini, P.; Astudillo Defru, Nicola; Dreizler, S.; Damasso, M.; Díaz, R. F.; Bonfils, X.; Jeffers, S. V.; Barnes, J. R.; Del Sordo, F.; Almenara, José Manuel; Artigau, Étienne; Bouchy, F.; Charbonneau, D.; Delfosse, X.; Doyon, R.; Figueira, P.; Forveille, T.; Haswell, C. A.; López-González, M. J.; Melo, C.; Mennickent, R. E.; Gaisné, G.; Morales, N.; Murgas, F.; Pepe, F.; Rodríguez, E.; Santos, N. C.; Tal-Or, L.; Tsapras, Y.; Udry, S. (2022)
    Context. Gliese-832 (GJ 832) is an M2V star hosting a massive planet on a decade-long orbit, GJ 832b, discovered by radial velocity (RV). Later, a super Earth or mini-Neptune orbiting within the stellar habitable zone was ...

  • Detection and characterisation of 54 massive companions with the SOPHIE spectrograph Seven new brown dwarfs and constraints on the brown dwarf desert 

    Kiefer, F.; Hébrard, G.; Sahlmann, J.; Sousa, S. G.; Forveille, T.; Santos, N.; Mayor, M.; Deleuil, M.; Wilson, P. A.; Dalal, S.; Díaz, R. F.; Henry, G. W.; Hagelberg, J.; Hobson, M. J.; Demangeon, O.; Bourrier, V.; Delfosse, X.; Arnold, L.; Astudillo Defru, Nicola; Beuzit, J. L.; Boisse, I.; Bonfils, X.; Borgniet, S.; Bouchy, F.; Courcol, B.; Ehrenreich, D.; Hara, N.; Lagrange, A. M.; Lovis, C.; Montagnier, G.; Moutou, C.; Pepe, F.; Perrier, C.; Rey, J.; Santerne, A.; Ségransan, D.; Udry, S.; Vidal-Madjar, A. (2019-11-05)
    Brown dwarfs (BD) are substellar objects intermediate between planets and stars with masses of ∼13–80 MJ . While isolated BDs are most likely produced by gravitational collapse in molecular clouds down to masses of a few ...

  • Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS) III. Atmospheric structure of the misaligned ultra-hot Jupiter WASP-121b 

    Bourrier, V.; Ehrenreich, D.; Lendl, M.; Cretignier, M.; Allart, R.; Dumusque, X.; Cegla, H. M.; Suarez Mascareno, A.; Wyttenbach, A.; Hoeijmakers, H. J.; Melo, C.; Kuntzer, T.; Astudillo Defru, Nicola; Giles, H.; Heng, K.; Kitzmann, D.; Lavie, B.; Lovis, C.; Murgas, F.; Nascimbeni, V.; Pepe, F.; Pino, L.; Segransan, D.; Udry, S. (2020-04)
    Ultra-hot Jupiters offer interesting prospects for expanding our theories on dynamical evolution and the properties of extremely irradiated atmospheres. In this context, we present the analysis of new optical spectroscopy ...

  • Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS): IV. A spectral inventory of atoms and molecules in the high-resolution transmission spectrum of WASP-121 b 

    Hoeijmakers, H. J.; Seidel, J. V.; Pino, L.; Kitzmann, D.; Sindel, J. P.; Ehrenreich, D.; Oza, A. V.; Bourrier, V.; Allart, R.; Gebek, A.; Lovis, C.; Yurchenko, S. N.; Astudillo Defru, Nicola; Bayliss, D.; Cegla, H.; Lavie, B.; Lendl, M.; Melo, C.; Murgas, F.; Nascimbeni, V.; Pepe, F.; Ségransan, D.; Udry, S.; Wyttenbach, A.; Heng, K. (2020-09-18)
    Context. WASP-121 b is a hot Jupiter that was recently found to possess rich emission (day side) and transmission (limb) spectra, suggestive of the presence of a multitude of chemical species in the atmosphere. Aims. ...

  • Hot Exoplanet Atmospheres Resolved with Transit Spectroscopy (HEARTS)? V. Detection of sodium on the bloated super-Neptune WASP-166b 

    Seidel, J. V.; Ehrenreich, D.; Bourrier, V.; Allart, R.; Attia, O.; Hoeijmakers, H. J.; Lendl, M.; Linder, E.; Wyttenbach, A.; Astudillo Defru, Nicola; Bayliss, D.; Cegla, H. M.; Heng, Kevin; Lavie, B.; Lovis, C.; Melo, C.; Pepe, F.; dos Santos, L. A.; Ségransan, D.; Udry, S. (2020-07-06)
    Planet formation processes or evolution mechanisms are surmised to be at the origin of the hot Neptune desert. Studying exoplanets currently living within or at the edge of this desert could allow disentangling the respective ...

  • Optical phase curve of the ultra-hot Jupiter WASP-121b 

    Bourrier, V.; Kitzmann, D.; Kuntzer, T.; Nascimbeni, V.; Lendl, M.; Lavie, B.; Hoeijmakers, H. J.; Pino, L.; Ehrenreich, D.; Heng, K.; Allart, R.; Cegla, H. M.; Dumusque, X.; Melo, C.; Astudillo Defru, Nicola; Caldwell, Douglas A.; Cretignier, M.; Giles, H.; Henze, C. E.; Jenkins, J.; Lovis, C.; Murgas, F.; Pepe, F.; Ricker, G. R.; Rose, M. E.; Seager, S.; Segransan, D.; Suárez-Mascareño, A.; Udry, S.; Vanderspek, R.; Wyttenbach, A. (2020-05)
    We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from ...

  • Planetary system LHS 1140 revisited with ESPRESSO and TESS 

    Lillo-Box, J.; Figueira, P.; Leleu, A.; Acuña, L.; Faria, J.P.; Hara, N.; Santos, N. C.; Correia, A. C. M; Robutel, P.; Deleuil, M.; Barrado, D.; Sousa, S.; Bonfils, X.; Mousis, O.; Almenara, José Manuel; Astudillo Defru, Nicola; Marcq, E.; Lovis, C.; Pepe, F. (2020-10-15)
    Context. LHS 1140 is an M dwarf known to host two transiting planets at orbital periods of 3.77 and 24.7 days. They were detected with HARPS and Spitzer. The external planet (LHS 1140 b) is a rocky super-Earth that is ...

  • The SOPHIE search for northern extrasolar planets XVI. HD 158259: A compact planetary system in a near-3:2 mean motion resonance chain 

    Hara, N. C.; Bouchy, F.; Stalport, M.; Boisse, I.; Rodrigues, J.; Delisle, J.-B.; Santerne, A.; Henry, G. W.; Arnold, L.; Astudillo Defru, Nicola; Borgniet, S.; Bonfils, X.; Bourrier, V.; Brugger, B.; Courcol, B.; Dalal, S.; Deleuil, M.; Delfosse, X.; Demangeon, O.; Díaz, R. F.; Dumusque, X.; Forveille, T.; Hébrard, G.; Hobson, M. J.; Kiefer, F.; López, T.; Mignon, L.; Mousis, O.; Moutou, C.; Pepe, F.; Rey, J.; Santos, N. C.; Ségransan, D.; Udry, S.; Wilson, P. A. (2020-04)
    Aims. Since 2011, the SOPHIE spectrograph has been used to search for Neptunes and super-Earths in the northern hemisphere. As part of this observational program, 290 radial velocity measurements of the 6.4 V magnitude ...

  • TOI-269 b: an eccentric sub-Neptune transiting a M2 dwarf revisited with ExTrA 

    Cointepas, M.; Almenara, José Manuel; Bonfils, X.; Bouchy, F.; Astudillo Defru, Nicola; Murgas, F.; Otegi, J. F.; Wyttenbach, A.; Anderson, David R.; Artigau, Étienne; Canto Martins, B. L.; Charbonneau, D.; Collins, K. A.; Collins, K. I.; Correia, J.-J.; Curaba, S.; Delboulbé, A.; Delfosse, X.; Díaz, R. F.; Dorn, C.; Doyon, R.; Feautrier, P.; Figueira, P.; Forveille, T.; Gaisne, G.; Gans, T.; Gluck, L.; Helled, R.; Hellier, C.; Jocou, L.; Kern, P.; Lafrasse, S.; Law, N.; Leão, I. C.; Lovis, C.; Magnard, Y.; Mann, A. W.; Maurel, D.; de Medeiros, J. R.; Melo, C.; Moulin, T.; Pepe, F.; Rabou, P.; Rochat, S.; Rodriguez, D. R.; Roux, A.; Santos, N. C.; Ségransan, D.; Stadler, E.; Ting, E. B.; Twicken, J. D.; Udry, S.; Waalkes, W. C.; West, R. G.; Wünsche, A.; Ziegler, C.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J.; Jenkins, J. M. (2021)
    We present the confirmation of a new sub-Neptune close to the transition between super-Earths and sub-Neptunes transiting the M2 dwarf TOI-269 (TIC 220 479 565, V = 14.4 mag, J = 10.9 mag, R⋆ = 0.40 R⊙, M⋆ = 0.39 M⊙, d = ...