Now showing items 1-20 of 44

    • Pavlenko, Ya. V.; Jenkins, James Stewart; Ivanyuk, O. M.; Jones, H. R. A.; Kaminsky, B. M.; Lyubchik, Yu. P.; Yakovina, L. A. (EDP Sciences, 2018)
      Context. We report results from lithium abundance determinations using high resolution spectral analysis of the 107 metal-rich stars from the Calan-Hertfordshire Extrasolar Planet Search programme. Aims. We aim to set ...
    • Jones, M. I.; Brahm, R.; Espinoza N., Arturo; Jordán, A.; Rojas, F.; Rabus, M.; Drass, H.; Zapata, A.; Soto, M. G.; Jenkins, James Stewart; Vuckovic, M.; Ciceri, S.; Sarkis, P. (EDP Sciences, 2018)
      Although the majority of radial velocity detected planets have been found orbiting solar-type stars, a fraction of them have been discovered around giant stars. These planetary systems have revealed different orbital ...
    • Jones, M. I.; Brahm, R.; Espinoza, N.; Jordán, A.; Rojas, F.; Rabus, M.; Drass, H.; Zapata, A.; Soto, M. G.; Jenkins, James Stewart; Vuckovic, M.; Ciceri, S.; Sarkis, P. (EDP Sciences, 2018)
      Although the majority of radial velocity detected planets have been found orbiting solar-type stars, a fraction of them have been discovered around giant stars. These planetary systems have revealed different orbital ...
    • Gill, Samuel; Cooke, Benjamin F; Bayliss, Daniel; Nielsen, Louise D.; Lendl, Monika; Wheatley, Peter J.; Anderson, David R.; Moyano, Maximiliano; Bryant, Edward M.; Acton, Jack S.; Belardi, Claudia; Bouchy, Fracois; Burleigh, Matthew R.; Casewell, Sarah L.; Chaushev, Alexander; Goad, Michael R.; Jackman, James A. G.; Jenkins, James Stewart; McCormac, James; Günther, Maximilian N.; Osborn, Hugh P.; Pollacco, Don; Raynard, Liam; Smith, Alexis M. S.; Tilbrook, Rossana H.; Turner, Oliver; Udry, Stéphane; Vines, Jose I.; Watson, Christopher A.; West, Richard G. (Oxford University Press, 2020)
      The Transiting Exoplanet Survey Satellite has produced a large number of single-transit event candidates which are being monitored by the Next Generation Transit Survey (NGTS). We observed a second epoch for the TIC ...
    • Damasso, Mario; Sordo, Fabio del; Anglada-Escude, Guillem; Giacobbe, Paolo; Sozzetti, Alessandro; Morbidelli, Alessandro; Pojmanski, Grzegorz; Barbato, Doménico; Butler, R. Paul; Jones, Hugh R. A.; Hambsch, Franz-Josef; Jenkins, James; López González, María José; Morales, Nicolás; Peña Rojas, Pablo; Rodríguez López, Cristina; Rodríguez, Eloy; Amado, Pedro J.; Anglada, Guillem; Feng, Fabo; Gómez, José F. (Amer Assoc Advancement Science, 2020)
      Our nearest neighbor, Proxima Centauri, hosts a temperate terrestrial planet. We detected in radial velocities evidence of a possible second planet with minimum mass mc sin ic = 5.8 ± 1.9M⊕ and orbital period P c = 5.21 ...
    • Jeffers, S. V.; Dreizier, S.; Barnes, J. R.; Haswell, C. A.; Nelson, R. P.; Rodríguez, E.; López González, M. J.; Morales, N.; Luque, R.; Zechmeister, M.; Vogt, S. S.; Jenkins, James Stewart; Palle, E.; Berdinas, Z. M.; Coleman, G.; Díaz, M. R.; Ribas, I.; Jones, H.R.A.; Butler, R. P.; Tinney, C. G.; Bailey, J.; Carter, B. D.; O'Toole, S.; Wittenmyer, R. A; Crane, J. D.; Feng, F.; Shectman, S. A.; Teske, J.; Reiners, A.; Amado, P. J.; Anglada Escude, G. (Amer Assoc Advancement Science, 2020)
      The closet exoplanets to the Sun provide opportunities for detailed characterization of planets outside the Solar System. We report the discovery, using radial velocity measurements, of a compact multiplanet system of ...
    • Armstrong, David J.; Lopez, Théo A.; Adibekyan, Vardan; Booth, Richard A.; Bryant, Edward M.; Collins, Karen A.; Deleuil, Magali; Emsenhuber, Alexandre; Huang, Chelsea X.; King, George W.; Lillo-Box, Jorge; Lissauer, Jack J.; Matthews, Elisabeth; Mousis, Olivier; Nielsen, Louise D.; Osborn, Hugh; Otegi, Jon; Santos, Nuno C.; Sousa, Sérgio G.; Stassun, Keivan G.; Veras, Dimitri; Ziegler, Carl; Acton, Jack S.; Almenara, José M.; Anderson, David R.; Barrado, David; Barros, Susana; Bayliss, Daniel; Belardi, Claudia; Bouchy, Francois; Briceño, César; Brogi, Matteo; Brown, David; Burleigh, Matthew R.; Casewell, Sarah L.; Chaushev, Alexander; Ciardi, David R.; Collins, Kevin I.; Colón, Knicole D.; Cooke, Benjamin F; Crossfield, Ian; Díaz, Rodrigo F.; Delgado Mena, Elisa; Demangeon, OLiver; Dorn, Caroline; Dumusque, Xavier; Eigmüller, Philipp; Fausnaugh, Michael; Figueira, Pedro; Gan, Tiajun; Gandhi, Siddharth; Gill, Samuel; Gonzales, Erica J.; Goad, Michael R.; Günther, Maximilian N.; Helled, Ravit; Hojjatpanah, Saeed; Howell, Steve B.; Jackman, James; Jenkins, James Stewart; Jenkins, Jon M.; Jensen, Eric; Kennedy, Grant M.; Latham, David W.; Law, Nicholas; Lendl, Monika; Lozovsky, Michael; Mann, Andrew W.; Moyano, Maximiliano; McCormac, James; Meru, Farzana; Mordasini, Christoph; Osborn, Ares; Pollacco, Don; Queloz, Didier; Raynard, Liam; Ricker, George R.; Rowden, Pamela; Santerne, Alexandre; Schlieder, Joshua E.; Seager, Sara; Sha, Lizhou; Tan, Thiam-Guan; Tilbrook, Rossanna H.; Ting, Eric; Udry, Stéphane; Vanderspek, Roland; Watson, Christopher A.; West, Richard G.; Wilson, Paul A.; Winn, Joshua N.; Wheatley, Peter; Villasenor, Jesus Noel; Vines, José I.; Zhan, Zhuchang (Nature, 2020)
      The interiors of giant planets remain poorly understood. Even for the planets in the Solar System, difficulties in observation lead to large uncertainties in the properties of planetary cores. Exoplanets that have undergone ...
    • Anglada Escudé, Guillem; Amado, Pedro J.; Barnes, John; Berdinas, Zaira M.; Butler, R. Paul; Coleman, Gavin A. L.; Cueva, Ignacio de la; Dreizler, Stefan; Endl, Michael; Giesers, Benjamin; Jeffers, Sandra V.; Jenkins, James Stewart; Jones, Hugh R. A.; Kiraga, Marcin; Kuerster, Martin; López González, María J.; Marvin, Christopher J.; Morales, Nicolás; Morín, Julien; Nelson, Richard P.; Ortiz, José L.; Ofir, Aviv; Paardekooper, Sijme-Jam; Reiners, Ansgar; Rodríguez, Eloy; Rodríguez López, Cristina; Sarmiento, Luis F.; Strachan, John P.; Tsapras, Yiannis; Tuomi, Mikko; Zechmeister, Mathias (Nature, 2016)
      At a distance of 1.295 parsecs(1), the red dwarf Proxima Centauri (a Centauri C, GL 551, HIP 70890 or simply Proxima) is the Sun's closest stellar neighbour and one of the best-studied low-mass stars. It has an effective ...
    • Anglada, Guillem; Amado, Pedro J.; Ortiz, Jose L.; Berdinas, Zaira M.; Jenkins, James Stewart (IOP Publishing Ltd., 2017)
      Proxima Centauri, the star closest to our Sun, is known to host at least one terrestrial planet candidate in a temperate orbit. Here we report the Atacama Large Millimeter/submillimeter Array (ALMA) detection of the star ...
    • Jones, M. I.; Brahm, R.; Wittenmyer, R. A.; Drass, H.; Jenkins, James Stewart; Melo, C. H. F.; Vos, J.; Rojo Rubke, Patricio (EDP Sciences, 2017)
      We report the discovery of a substellar companion around the giant star HIP 67537. Based on precision radial velocity measurements from CHIRON and FEROS high-resolution spectroscopic data, we derived the following orbital ...
    • Acton, Jack S.; Goad, Michael R.; Casewell, Sarah L.; Vines, José I.; Burleigh, Matthew R.; Eigmueller, Philipp; Nielsen, Louise D.; Gansicke, Boris T.; Bayliss, Daniel; Bouchy, Francois; Bryant, Edward M.; Gill, Samuel; Gillen, Edward; Günther, Maximilian N.; Jenkins, James S.; McCormac, James; Moyano, Maximiliano; Raynard, Liam R.; Tilbrook, Rossanna H.; Udry, Stéphane; Watson, Christopher A.; West, Richard G.; Wheatley, Peter J. (Oxford University Press, 2020)
      We present the discovery of NGTS J0930-18, an extreme mass ratio eclipsing M-dwarf binary system with an early Mdwarf primary and a late M-dwarf secondary close to the hydrogen burning limit. Global modelling of photometry ...
    • Jenkins, James Stewart; Díaz, Matías; Troncoso Kurtovic, Nicolás; Espinoza, Néstor; Vines, José I.; Peña Rojas, Pablo; Brahm, Rafael; Torres, Pascal; Cortés Zuleta, Pía; Soto, Maritza G.; Lopez, Eric D.; King, George W.; Wheatley, Peter J.; Winn, Joshua N.; Ciardi, David R.; Ricker, George; Vanderspek, Roland; Latham, David W.; Seager, Sara; Jenkins, Jon M.; Beichman, Charles A.; Bieryla, Allyson; Burke, Christopher J.; Christiansen, Jessie L.; Henze, Christopher E.; Klaus, Todd C.; McCauliff, Sean; Mori, Mayuko; Narita, Norio; Nishiumi, Taku; Tamura, Motohide; Pitogo de Leon, Jerome; Quinn, Samuel N.; Villaseñor, Jesús Noel; Vezie, Michael; Lissauer, Jack J.; Collins, Karen A.; Collins, Kevin I.; Isopi, Giovanni; Mallia, Franco; Ercolino, Andrea; Petrovich, Cristobal; Jordán, Andrés; Acton, Jack S.; Armstrong, David J.; Bayliss, Daniel; Bouchy, François; Belardi, Claudia; Bryant, Edward M.; Burleigh, Matthew R.; Jara Cabrera, Juan Miguel; Casewell, Sarah L.; Chaushev, Alexander; Cooke, Benjamin F.; Eigmüller, Philipp; Erikson, Anders; Foxell, Emma; Gänsicke, Boris T.; Gill, Samuel; Gillen, Edward; Günther, Maximilian N.; Goad, Michael R.; Hooton, Matthew J.; Jackman, James A. G.; Louden, Tom; McCormac, James; Moyano, Maximiliano; Nielsen, Louise D.; Pollacco, Don; Queloz, Didier; Rauer, Heike; Raynard, Liam; Smith, Alexis M. S.; Tilbrook, Rosanna H.; Titz-Weider, Ruth; Turner, Oliver; Udry, Stéphane; Walker, Simon R.; Watson, Christopher A.; West, Richard G.; Palle, Enric; Ziegler, Carl; Law, Nicholas; Mann, Andrew W. (Nature, 2020)
      About 1 out of 200 Sun-like stars has a planet with an orbital period shorter than one day: an ultrashort-period planet(1,2). All of the previously known ultrashort-period planets are either hot Jupiters, with sizes above ...
    • Gunther, Maximilian N.; Queloz, Didier; Gillen, Edward; Jenkins, James Stewart (Oxford university press, 2017)
      The Next Generation Transit Survey (NGTS), operating in Paranal since 2016, is a wide-field survey to detect Neptunes and super-Earths transiting bright stars, which are suitable for precise radial velocity follow-up and ...
    • Jones, M. L.; Jenkins, James Stewart; Brahm, R.; Wittenmyer, R. A.; Olivares, E. F.; Melo, C. H.; Rojo Rubke, Patricio; Jordan, A.; Drass, H.; Butler, R.; Wang, L. (EDP Sciences, 2016)
      Context. Exoplanet searches have revealed interesting correlations between the stellar properties and the occurrence rate of planets. In particular, different independent surveys have demonstrated that giant planets are ...
    • Wittenmyer, Robert A.; Tuomi, Mikko; Butler, R. P.; Jones, H. R.; Anglada Escudé, Guillem; Horner, Jonathan; Tinney, C. G.; Marshall, J. P.; Carter, B. D.; Bailey, J.; Salter, G. S.; O’Toole, S. J.; Wright, D.; Crane, J. D.; Schectman, S. A.; Arriagada, P.; Thompson, I.; Minniti, D.; Jenkins, James Stewart; Diaz, M. (The American Astronomical Society., 2014)
      We report the detection of GJ 832c, a super-Earth orbiting near the inner edge of the habitable zone of GJ 832, an Mdwarf previously known to host a Jupiter analog in a nearly circular 9.4 yr orbit. The combination of ...
    • Jackman, James A. G.; Jenkins, James Stewart (Oxford University Press, 2018-07)
      We present high cadence detections of two superflares from a bright G8 star (V = 11.56) with the Next Generation Transit Survey (NGTS). We improve upon previous superflare detections by resolving the flare rise and peak, ...
    • Espinoza, Nestor; Rabus, Markus; Brahm, Rafael; Jones, Matias; Jordan, Andrés; Pérez Rojas, Felipe Ignacio; Drass, Holger; Vuckovic, Maja; Hartman, Joel D.; Jenkins, James Stewart; Cortés, Cristián (Oxford University Press, 2017)
      We present the discovery of K2-113, a dense hot-Jupiter discovered using photometry from Campaign 8 of theKepler-2 (K2) mission and high-resolution spectroscopic follow-up obtained with the FEROS spectrograph. The planet ...
    • Giles, H. A. C.; Bayliss, D.; Espinoza, N.; Jenkins, James Stewart; Pantoja, B.; Soto, M. (Oxford University Press, 2018)
      We present the discovery of K2-140b, a P = 6.57 d Jupiter-mass (M-P = 1.019 +/- 0.070 M-Jup) planet transiting a V = 12.5 (G5-spectral type) star in an eccentric orbit (e = 0.120(-0.046)(+0.056)) detected using a combination ...
    • Brahm, R.; Espinoza N., Arturo; Rabus, M.; Jordán, A.; Díaz, M. R.; Rojas, F.; Vučković, M.; Zapata, A.; Cortés, C.; Drass, H.; Jenkins, James Stewart; Lachaume, R.; Pantoja, B.; Sarkis, P.; Soto, M. G.; Vasquez, S.; Henning, Th; Jones, M. I. (Oxford University Press, 2019)
      © 2018 The Author(s).We report the discovery of K2-161b, which was first identified as a planetary candidate from Kepler K2 photometry of Campaign 14, and whose planetary nature and orbital parameters were then confirmed ...
    • Brahm, R.; Espinoza, N.; Jordan, A.; Rojas, F.; Sarkis, P.; Díaz, M. R; Rabus, M.; Drass, H.; Lachaume, R.; Soto, M. G.; Jenkins, James Stewart; Jones, M. I.; Henning, Thomas; Pantoja, B.; Vuckovic, M. (Oxford University Press, 2018-06)
      We report the discovery of K2-232 b using photometric data of the Kepler K2 satellite coupled with ground-based spectroscopic observations. K2-232 b has a mass of M-P = 0.397 +/- 0.037 M-J, a radius of R-P = 1.00 +/- 0.020 ...