Browsing by Author "Pinfield, David"

Now showing items 1-6 of 6

    • A chemical survey of exoplanets with ARIEL 

      Tinetti, Giovanna; Drossart, Pierre; Eccleston, Paul; Hartogh, Paul; Heske, Astrid; Leconte, Jérémy; Micela, Giusi; Ollivier, Marc; Pilbratt, Göran; Puig, Ludovic; Turrini, Diego; Vandenbussche, Bart; Wolkenberg, Paulina; Beaulieu, Jean Philippe; Buchave, Lars A.; Ferus, Martin; Griffin, Matt; Guedel, Manuel; Justtanont, Kay; Lagage, Pierre Olivier; Machado, Pedro; Malaguti, Giuseppe; Min, Michiel; Nørgaard-Nielsen, Hans Ulrik; Rataj, Mirek; Ray, Tom; Ribas, Ignasi; Swain, Mark; Szabo, Robert; Werner, Stephanie; Barstow, Joanna; Burleigh, Matt; Cho, James; du Foresto, Vincent Coudé; Coustenis, Athena; Decin, Leen; Encrenaz, Therese; Galand, Marina; Gillon, Michael; Helled, Ravit; Morales, Juan Carlos; Muñoz, Antonio García; Moneti, Andrea; Pagano, Isabella; Pascale, Enzo; Piccioni, Giuseppe; Pinfield, David; Sarkar, Subhajit; Selsis, Franck; Jones, Hugh (2018-11-01)
      Thousands of exoplanets have now been discovered with a huge range of masses, sizes and orbits: from rocky Earth-like planets to large gas giants grazing the surface of their host star. However, the essential nature of ...

    • New Planetary Systems from the Calan-Hertfordshire Extrasolar Planet Search and the Core Accretion Mass Limit 

      Jenkins, J. S.; Jones, Hugh; Tuomi, Mikko; Diaz, M.; Cordero, J. P.; Aguayo, A.; Pantoja, B.; Arriagada, P.; Mahu, R.; Brahm, R.; Rojo, P.; Soto, M. G.; Ivanyuk, O.; Becerra Yoma, N.; Day-Jones, A. C.; Ruiz, M. T.; Pavlenko, Y. V.; Barnes, J. R.; Murgas, F.; Pinfield, David; Jones, M. I.; Lopez-Morales, M.; Shectman, S.; Butler, R. P.; Minniti, D. (2017-04-01)
      We report the discovery of eight new giant planets, and updated orbits for four known planets, orbiting dwarf and subgiant stars using the CORALIE, HARPS, and MIKE instruments as part of the Calan–Hertfordshire Extrasolar ...

    • The observed distribution of spectroscopic binaries from the Anglo-Australian Planet Search 

      Jenkins, J. S.; Díaz, M.; Jones, Hugh; Butler, R. P.; Tinney, Chris G.; O'Toole, S. J.; Carter, B.D.; Wittenmyer, R.; Pinfield, David (2015-10-21)
      We report the detection of sixteen binary systems from the Anglo-Australian Planet Search. Solutions to the radial velocity data indicate that the stars have companions orbiting with a wide range of masses, eccentricities ...

    • Precision radial velocities of 15 M5-M9 dwarfs 

      Barnes, J. R.; Jenkins, J. S.; Jones, H. R A; Jeffers, S. V.; Rojo, P.; Arriagada, P.; Jordán, A.; Minniti, D.; Tuomi, Mikko; Pinfield, David; Anglada-Escudé, G. (2014-04-11)
      We present radial velocity measurements of a sample ofM5V-M9Vstars from our Red-Optical Planet Survey, operating at 0.652-1.025 μm. Radial velocities for 15 stars, with rms precision down to 2.5m-1 over a week-long time-scale, ...

    • Primeval very low-mass stars and brown dwarfs -- II. The most metal-poor substellar object 

      Zhang, Z. H.; Homeier, D.; Pinfield, David; Lodieu, N.; Jones, Hugh; Allard, F.; Pavlenko, Ya V. (2017-06-01)
      SDSS J010448.46+153501.8 has previously been classified as an sdM9.5 subdwarf. However, it's very blue J-K colour (-0.15+/-0.17) suggests a much lower metallicity compared to normal sdM9.5 subdwarfs. Here we re-classify ...

    • Spectroscopic signatures of youth in low-mass kinematic candidates of young moving groups 

      Galvez-Ortiz, M. C.; Kuznetsov, M.; Clarke, J. R. A.; Pavlenko, Ya. V.; Folkes, S. L.; Pinfield, David; Jones, Hugh; Jenkins, J. S.; Barnes, John; Burmingham, B.; Day-Jones, A. C.; Martin, E. L.; Garcia Perez, A. E.; del Burgo, C.; Pokorny, R. S. (2014-04-21)
      We present a study of age-related spectral signatures observed in 25 young low-mass objects that we have previously determined as possible kinematic members of five young moving groups: the Local Association (Pleiades ...