Now showing items 1-20 of 97

  • A 1.9 Earth radius rocky planet and the discovery of a non-transiting planet in the Kepler-20 system 

    Buchhave, Lars A.; Dressing, Courtney D.; Dumusque, Xavier; Rice, Ken; Vanderburg, Andrew; Mortier, Annelies; Lopez-Morales, Mercedes; Lopez, Eric; Lundkvist, Mia S.; Kjeldsen, Hans; Affer, Laura; Bonomo, Aldo S.; Charbonneau, David; Cameron, Andrew Collier; Cosentino, Rosario; Figueira, Pedro; Fiorenzano, Aldo F. M.; Harutyunyan, Avet; Haywood, Raphaëlle D.; Johnson, John Asher; Latham, David W.; Lovis, Christophe; Malavolta, Luca; Mayor, Michel; Micela, Giusi; Molinari, Emilio; Motalebi, Fatemeh; Nascimbeni, Valerio; Pepe, Francesco; Phillips, David F.; Piotto, Giampaolo; Pollacco, Don; Queloz, Didier; Sasselov, Dimitar; Ségransan, Damien; Sozzetti, Alessandro; Udry, Stéphane; Watson, Chris (2016-11-11) - Journal article
    Kepler-20 is a solar-type star (V = 12.5) hosting a compact system of five transiting planets, all packed within the orbital distance of Mercury in our own Solar System. A transition from rocky to gaseous planets with a ...
  • Alignment in star-debris disc systems seen by Herschel 

    Greaves, Jane Sophia; Kennedy, G. M.; Thureau, N.; Eiroa, C.; Marshall, J. P.; Maldonado, J.; Matthews, B. C.; Olofsson, G.; Barlow, M. J.; Moro-Martin, A.; Sibthorpe, B.; Absil, O.; Ardila, D. R.; Booth, M.; Broekhoven-Fiene, H.; Brown, David John Alexander; Collier Cameron, A.; del Burgo, C.; Di Francesco, J.; Duchene, G.; Eisloffel, J.; Ertel, S.; Holland, W. S.; Horner, J.; Kalas, P.; Kavelaars, J. J.; Lestrade, J. -F.; Vican, L.; Wilner, D. J.; Wolf, S.; Wyatt, M. C. (2014-02-11) - Journal article
    Many nearby main-sequence stars have been searched for debris using the far-infrared Herschel satellite, within the DEBRIS, DUNES and Guaranteed-Time Key Projects. We discuss here 11 stars of spectral types A–M where the ...
  • ALMA and Herschel observations of the prototype dusty and polluted white dwarf G29-38 

    Farihi, J.; Wyatt, M. C.; Greaves, J. S.; Bonsor, A.; Sibthorpe, B.; Panic, O. (2014-10-21) - Journal article
    ALMA Cycle 0 and Herschel PACS observations are reported for the prototype, nearest, and brightest example of a dusty and polluted white dwarf, G29-38. These long-wavelength programmes attempted to detect an outlying, ...
  • Characterization of the gaseous companion κ Andromedae b New Keck and LBTI high-contrast observations 

    Bonnefoy, M.; Currie, T.; Marleau, G. -D.; Schlieder, J. E.; Wisniewski, J.; Carson, J.; Covey, K. R.; Henning, T.; Biller, B.; Hinz, P.; Klahr, H.; Boyer, A. N. Marsh; Zimmerman, N.; Janson, M.; McElwain, M.; Mordasini, C.; Skemer, A.; Bailey, V.; Defrere, D.; Thalmann, C.; Skrutskie, M.; Allard, F.; Homeier, D.; Tamura, M.; Feldt, M.; Cumming, A.; Grady, C.; Brandner, W.; Helling, C.; Witte, S.; Hauschildt, P.; Kandori, R.; Kuzuhara, M.; Fukagawa, M.; Kwon, J.; Kudo, T.; Hashimoto, J.; Kusakabe, N.; Abe, L.; Brandt, T.; Egner, S.; Guyon, O.; Hayano, Y.; Hayashi, M.; Hayashi, S.; Hodapp, K.; Ishii, M.; Iye, M.; Knapp, G.; Matsuo, T.; Mede, K.; Miyama, M.; Morino, J. -I.; Moro-Martin, A.; Nishimura, T.; Pyo, T.; Serabyn, E.; Suenaga, T.; Suto, H.; Suzuki, R.; Takahashi, T; Takami, M.; Takato, N.; Terada, H.; Tomono, D.; Turner, E.; Watanabe, M.; Yamada, T.; Takami, H.; Usuda, T. (2014-02-14) - Journal article
    Context. We previously reported the direct detection of a low-mass companion at a projected separation of 55 ± 2 AU around the B9-type star κ  Andromedae. The properties of the system (mass ratio, separation) make it a ...
  • Characterization of the planetary system Kepler-101 with HARPS-N : A hot super-Neptune with an Earth-sized low-mass companion 

    Bonomo, A.S.; Sozzetti, A.; Lovis, C.; Malavolta, L.; Rice, K.; Buchhave, L.A.; Sasselov, D.; Cameron, A.C.; Latham, D.W.; Molinari, E.; Pepe, F.; Udry, S.; Affer, L.; Charbonneau, D.; Cosentino, R.; Dressing, C.D.; Dumusque, X.; Figueira, P.; Fiorenzano, A.F.M.; Gettel, S.; Harutyunyan, A.; Haywood, R.D.; Horne, K.; Lopez-Morales, M.; Mayor, M.; Micela, G.; Motalebi, F.; Nascimbeni, V.; Phillips, D.F.; Piotto, G.; Pollacco, D.; Queloz, D.; Ségransan, D.; Szentgyorgyi, A.; Watson, C. (2014-12) - Journal article
    We characterize the planetary system Kepler-101 by performing a combined differential evolution Markov chain Monte Carlo analysis of Kepler data and forty radial velocities obtained with the HARPS-N spectrograph. This ...
  • Chemical abundances and kinematics of 257 G-, K-type field giants. Setting a base for further analysis of giant-planet properties orbiting evolved stars 

    Adibekyan, V. Zh.; Benamati, L.; Santos, N. C.; Alves, S.; Lovis, C.; Udry, S.; Israelian, G.; Sousa, S. G.; Tsantaki, M.; Mortier, A.; Sozzetti, A.; De Medeiros, J. R. (2015-06-01) - Journal article
    We performed a uniform and detailed abundance analysis of 12 refractory elements (Na, Mg, Al, Si, Ca, Ti, Cr, Ni, Co, Sc, Mn, and V) for a sample of 257 G- and K-type evolved stars from the CORALIE planet search programme. ...
  • A chemical kinetics network for lightning and life in planetary atmospheres 

    Rimmer, Paul; Helling, Christiane (2016-05) - Journal article
    There are many open questions about prebiotic chemistry in both planetary and exoplanetary environments. The increasing number of known exoplanets and other ultra-cool, substellar objects has propelled the desire to detect ...
  • Constraining planet structure from stellar chemistry : the cases of CoRoT-7, Kepler-10, and Kepler-93 

    Santos, N. C.; Adibekyan, V.; Mordasini, C.; Benz, W.; Delgado-Mena, E.; Dorn, C.; Buchhave, L.; Figueira, P.; Mortier, Annelies; Pepe, F.; Santerne, A.; Sousa, S. G.; Udry, S. (2015-08-17) - Journal article
    Aims. We explore the possibility that the stellar relative abundances of different species can be used to constrain the bulk abundances of known transiting rocky planets. Methods. We use high resolution spectra to derive ...
  • Direct Imaging discovery of a second planet candidate around the possibly transiting planet host CVSO 30 

    Schmidt, T. O. B.; Neuhäuser, R.; Briceño, C.; Vogt, N.; Raetz, St; Seifahrt, A.; Ginski, C.; Mugrauer, M.; Buder, S.; Adam, C.; Hauschildt, P. H.; Witte, S.; Helling, Christiane; Schmitt, J. H. M. M. (2016-09) - Journal article
    We surveyed the 25 Ori association for direct-imaging companions. This association has an age of only few million years. Among other targets, we observed CVSO 30, which has recently been identified as the first T Tauri ...
  • Discovery of a gas giant planet in microlensing event OGLE-2014-BLG-1760 

    Bhattacharya, A.; Bennett, D. P.; Bond, I. A.; Sumi, T.; Udalski, A.; Street, R.; Tsapras, Y.; Abe, F.; Freeman, M.; Fukui, A.; Hirao, Y.; Itow, Y.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Nagakane, M.; Ohnishi, K.; Rattenbury, N.; Saito, T.; Sharan, A.; Sullivan, D. J.; Suzuki, D.; Tristram, P. J.; Skowron, J.; Szymański, M. K.; Soszyński, I.; Poleski, R.; Mróz, P.; Kozlowski, S.; Pietrukowicz, P.; Ulaczyk, K.; Wyrzykowski, L.; Bachelet, E.; Bramich, D. M.; D’Ago, G.; Dominik, M.; Figuera Jaimes, R.; Horne, K.; Hundertmark, M.; Kains, N.; Menzies, J.; Schmidt, R.; Snodgrass, C.; Steele, I. A.; Wambsganss, J. (2016-11) - Journal article
    We present the analysis of the planetary microlensing event OGLE-2014-BLG-1760, which shows a strong light-curve signal due to the presence of a Jupiter mass ratio planet. One unusual feature of this event is that the ...
  • Discovery of WASP-65b and WASP-75b : two hot Jupiters without highly inflated radii 

    Gómez Maqueo Chew, Y.; Faedi, F.; Pollacco, D.; Brown, David John Alexander; Doyle, A.P.; Collier Cameron, A.; Gillon, M.; Lendl, M.; Smalley, B.; Triaud, A.H.M.J.; West, R.G.; Wheatley, P.J.; Busuttil, R.; Liebig, C.; Anderson, D.R.; Armstrong, D.J.; Barros, S.C.C.; Bento, J.; Bochinski, J.; Burwitz, V.; Delrez, L.; Enoch, B.; Fumel, A.; Haswell, C.A.; Hébrard, G.; Hellier, C.; Holmes, S.; Jehin, E.; Kolb, U.; Maxted, P.F.L.; McCormac, J.; Miller, G.R.M.; Norton, A.J.; Pepe, F.; Queloz, D.; Rodríguez, J.; Ségransan, D.; Skillen, I.; Stassun, K.G.; Udry, S.; Watson, C. (2013-11-01) - Journal article
    We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ~2.311, and ~2.484 ...
  • Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars? 

    Brown, D.J.A. (2014-08-01) - Journal article
    Using a sample of 68 planet-hosting stars, I carry out a comparison of isochrone fitting and gyrochronology to investigate whether tidal interactions between the stars and their planets are leading to underestimated ages ...
  • Does the presence of planets affect the frequency and properties of extrasolar Kuiper belts? Results from the Herschel DEBRIS and DUNES surveys 

    Moro-Martín, A.; Marshall, J.P.; Kennedy, G.; Sibthorpe, B.; Matthews, B.C.; Eiroa, C.; Wyatt, M.C.; Lestrade, J.-F.; Maldonado, J.; Rodriguez, D.; Greaves, J.S.; Montesinos, B.; Mora, A.; Booth, M.; Duchêne, G.; Wilner, D.; Horner, J. (2015-03-10) - Journal article
    The study of the planet-debris disk connection can shed light on the formation and evolution of planetary systemsand may help "predict" the presence of planets around stars with certain disk characteristics. In preliminary ...
  • Dusty disks at the bottom of the initial mass function 

    Scholz, Alexander; Jayawardhana, Ray (2008-01-01) - Journal article
    Isolated planetary-mass objects (IPMOs) have masses close to or below the deuterium-burning mass limit (similar to 15 M-Jup)-at the bottom of the stellar initial mass function. We present an exploratory survey for disks ...
  • The effects of tidal interactions on the properties and evolution of hot-Jupiter planetary systems. 

    Brown, David John Alexander (University of St Andrews, 2013-11-29) - Thesis
    Thanks to a range of discovery methods that are sensitive to different regions of parameter space, we now know of over 900 planets in over 700 planetary systems. This large population has allowed exoplanetary scientists ...
  • EPIC 201702477b : a transiting brown dwarf from K2 in a 41 day orbit 

    Bayliss, D.; Hojjatpanah, S.; Santerne, A.; Dragomir, D.; Zhou, G.; Shporer, A.; Colón, K. D.; Almenara, J.; Armstrong, D. J.; Barrado, D.; Barros, S. C. C.; Bento, J.; Boisse, I.; Bouchy, F.; Brown, D. J. A.; Brown, T.; Cameron, A.; Cochran, W. D.; Demangeon, O.; Deleuil, M.; Díaz, R. F.; Fulton, B.; Horne, K.; Hébrard, G.; Lillo-Box, J.; Lovis, C.; Mawet, D.; Ngo, H.; Osborn, H.; Palle, E.; Petigura, E.; Pollacco, D.; Santos, N.; Sefako, R.; Siverd, R.; Sousa, S. G.; Tsantaki, M. (2016-12-20) - Journal article
    We report the discovery of EPIC 201702477b, a transiting brown dwarf in a long period (40.73691 ± 0.00037 day) and eccentric (e = 0.2281 ± 0.0026) orbit. This system was initially reported as a planetary candidate based ...
  • An extreme planetary system around HD 219828 : one long-period super Jupiter to a hot-Neptune host star 

    Santos, N. C.; Santerne, A.; Faria, J. P.; Rey, J.; Correia, A. C. M.; Laskar, J.; Udry, S.; Adibekyan, V.; Bouchy, F.; Delgado-Mena, E.; Melo, C.; Dumusque, X.; Hébrard, G.; Lovis, C.; Mayor, M.; Montalto, M.; Mortier, A.; Pepe, F.; Figueira, P.; Sahlmann, J.; Ségransan, D.; Sousa, S. G. (2016-08) - Journal article
    Context. With about 2000 extrasolar planets confirmed, the results show that planetary systems have a whole range of unexpected properties. This wide diversity provides fundamental clues to the processes of planet formation ...
  • The first circumbinary planet found by microlensing: OGLE-2007-BLG-349L(AB)c 

    Bennett, D. P.; Rhie, S. H.; Udalski, A.; Gould, A.; Tsapras, Y.; Kubas, D.; Bond, I. A.; Greenhill, J.; Cassan, A.; Rattenbury, N. J.; Boyajian, T. S.; Luhn, J.; Penny, M. T.; Anderson, J.; Abe, F.; Bhattacharya, A.; Botzler, C. S.; Donachie, M.; Freeman, M.; Fukui, A.; Hirao, Y.; Itow, Y.; Koshimoto, N.; Li, M. C. A.; Ling, C. H.; Masuda, K.; Matsubara, Y.; Muraki, Y.; Nagakane, M.; Ohnishi, K.; Oyokawa, H.; Perrott, Y. C.; Saito, To.; Sharan, A.; Sullivan, D. J.; Sumi, T.; Suzuki, D.; Tristram, P. J.; Yonehara, A.; Yock, P. C. M.; Szymański, M. K.; Soszyński, I.; Ulaczyk, K.; Wyrzykowski, Ł.; Allen, W.; DePoy, D.; Gal-Yam, A.; Gaudi, B. S.; Han, C.; Monard, I. A. G.; Ofek, E.; Pogge, R. W.; Street, R. A.; Bramich, D. M.; Dominik, M.; Horne, K.; Snodgrass, C.; Steele, I. A.; Albrow, M. D.; Bachelet, E.; Batista, V.; Beaulieu, J.-P.; Brillant, S.; Caldwell, J. A. R.; Cole, A.; Coutures, C.; Dieters, S.; Dominis Prester, D.; Donatowicz, J.; Fouqué, P.; Hundertmark, M.; Jørgensen, U. G.; Kains, N.; Kane, S. R.; Marquette, J.-B.; Menzies, J.; Pollard, K. R.; Ranc, C.; Sahu, K. C.; Wambsganss, J.; Williams, A.; Zub, M. (2016-11) - Journal article
    We present the analysis of the first circumbinary planet microlensing event, OGLE-2007-BLG-349. This event has a strong planetary signal that is best fit with a mass ratio of q ≈ 3.4 ×10‑4, but there is an additional signal ...
  • First spectroscopic observations of the substellar companion of the young debris disk star PZ Telescopii 

    Schmidt, T.O.B.; Mugrauer, M.; Neuhäuser, R.; Vogt, N.; Witte, S.; Hauschildt, P.H.; Helling, Christiane; Seifahrt, A. (2014-06-20) - Journal article
    Context. In 2010 a substellar companion to the solar analog pre-main sequence star PZ Tel and member of the approximately 12 Myr old beta Pic moving group was found by high-contrast direct imaging independently by two ...
  • Five transiting hot Jupiters discovered using WASP-South, Euler, and TRAPPIST : WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b, and WASP-133 b 

    Maxted, P. F. L.; Anderson, D. R.; Collier Cameron, A.; Delrez, L.; Gillon, M.; Hellier, C.; Jehin, E.; Lendl, M.; Neveu-VanMalle, M.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S.; Wagg, T.; West, R. G. (2016-07) - Journal article
    We have used photometry from the WASP-South instrument to identify 5 stars showing planet-like transits in their light curves. The planetary nature of the companions to these stars has been confirmed using photometry from ...