Browsing University of Hertfordshire by Author "Clarke, J.R.A."

Now showing items 1-5 of 5

    • Chromospheric activities and kinematics for solar type dwarfs and subgiants : analysis of the activity distribution and the AVR 

      Jenkins, J.S.; Murgas, F.; Rojo, P.; Jones, H.R.A.; Day-Jones, A.C.; Jones, M.I.; Clarke, J.R.A.; Ruiz, M.; Pinfield, D.J. (2011)
      Aims : In this work we present chromospheric activity indices, kinematics, radial-velocities, and rotational velocities for more than 850 FGK-type dwarfs and subgiant stars in the southern hemisphere and test how best to ...

    • Discovery of a widely separated ultracool dwarf–white dwarf binary 

      Day-Jones, A.C.; Pinfield, D.J.; Napiwotzki, R.; Burningham, B.; Jenkins, J.S.; Jones, H.R.A.; Folkes, S.; Weights, D.; Clarke, J.R.A. (2008)

    • A search for southern ultracool dwarfs in young moving groups 

      Clarke, J.R.A.; Pinfield, D.J.; Galvez-Ortiz, M.C.; Jenkins, J.S.; Burningham, B.; Deacon, Niall; Jones, H.R.A.; Pokorny, R.S.; Barnes, J.R.; Day-Jones, A.C. (2010)
      We associate 132 low-mass ultracool dwarfs in the southern hemisphere as candidate members of five moving groups (MGs) using photometric and astrometric selection techniques. Of these objects, we present high-resolution ...

    • Spectroscopy and kinematics of low-mass members of young moving groups 

      Galvez-Ortiz, M. C.; Clarke, J.R.A.; Pinfield, D.J.; Jenkins, J. S.; Folkes, S. L.; Garcia Perez, A. E.; Day-Jones, A.C.; Burningham, B.; Jones, H.R.A.; Barnes, J. R.; Pokorny, R.S. (2010)
      We study a target sample of 68 low-mass objects (with spectral types in the range M4.5–L1) previously selected via photometric and astrometric criteria, as possible members of five young moving groups: the Local Association ...

    • VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea 

      Saito, R.K.; Hempel, M.; Minniti, D.; Lucas, P.W.; Rejkuba, M.; Toledo, I.; Gonzalez, O. A.; Alonso-García, J.; Irwin, M.J.; Gonzalez-Solares, E.; Hodgkin, S.T.; Lewis, J.R.; Cross, N.; Ivanov, V.D.; Kerins, E.; Emerson, J.P.; Soto, M.; Amôres, E.B.; Gurovich, S.; Dékány, I.; Angeloni, R.; Beamin, J.C.; Catelan, M.; Padilla, N.; Zoccali, M.; Pietrukowicz, P.; Moni Bidin, C.; Mauro, F.; Geisler, D.; Folkes, S.L.; Sale, S.E.; Borissova, J.; Kurtev, R.; Ahumada, A.V.; Alonso, M.V.; Adamson, A.; Arias, J.I.; Bandyopadhyay, R.M.; Barbá, R.H.; Barbuy, B.; Baume, G. L.; Bedin, L.R.; Bellini, A.; Benjamin, R.; Bica, E.; Bonatto, C.; Bronfman, L.; Carraro, G.; Chenè, A.N.; Clariá, J.J.; Clarke, J.R.A.; Contreras, C.; Corvillón, A.; de Grijs, R.; Dias, B.; Drew, J.E.; Fariña, C.; Feinstein, C.; Fernández-Lajús, E.; Gamen, R.C.; Gieren, W.; Goldman, B.; González-Fernández, C.; Grand, R. J. J.; Gunthardt, G.; Hambly, N.C.; Hanson, M. M.; Helminiak, K.G.; Hoare, M.G.; Huckvale, L.; Jordán, A.; Kinemuchi, K.; Longmore, A.; López-Corredoira, M.; Maccarone, T.; Majaess, D.; Martín, E.L.; Masetti, N.; Mennickent, R.E.; Mirabel, I.F.; Monaco, L.; Morelli, L.; Motta, V.; Palma, T.; Parisi, M.C.; Parker, Q.; Peñaloza, F.; Pietrzyski, G.; Pignata, G.; Popescu, B.; Read, M. A.; Rojas, A.; Roman-Lopes, A.; Ruiz, M.T.; Saviane, I.; Schreiber, M. R.; Schröder, A. C.; Sharma, S.; Smith, M.D.; Sodré, L.; Stead, J.; Stephens, A. W.; Tamura, M.; Tappert, C.; Thompson, Mark; Valenti, E.; Vanzi, L.; Walton, N.A.; Weidmann, W.; Zijlstra, A. (2012)
      Context. The ESO public survey VISTA variables in the Vía Láctea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for about five years. Aims. We ...