Now showing items 1106-1125 of 2414

  • A Keck/DEIMOS Kinematic Study of Andromeda IX: dark matter on the smallest galactic scales 

    Chapman, Scott C.; Ibata, Rodrigo; Lewis, Geraint F.; Ferguson, Annette M. N.; Irwin, Mike; McConnachie, Alan; Tanvir, Nial (2005-10-20)
    We present the results of a kinematic survey of the dwarf spheroidal satellite of M31, And-IX, which appears to be the lowest surface brightness and also the faintest galaxy (M_V = -8.3) found to date. Using Keck/DEIMOS ...
  • A Keck/DEIMOS spectroscopic survey of faint Galactic satellites: searching for the least massive dwarf galaxies 

    Martin, N. F.; Ibata, R. A.; Chapman, S. C.; Irwin, M.; Lewis, G. F. (2007-07-31)
    [abridged] We present the results of a spectroscopic survey of the recently discovered faint Milky Way satellites Boo, UMaI, UMaII and Wil1. Using the DEIMOS spectrograph on Keck, we have obtained samples that contain from ...
  • A Keck/DEIMOS spectroscopic survey of the faint M31 satellites And IX, And XI, And XII, and And XIII 

    Collins, M. L. M.; Chapman, S. C.; Irwin, M. J.; Martin, N. F.; Ibata, R. A.; Zucker, D. B.; Blain, A.; Ferguson, A. M. N.; Lewis, G. F.; McConnachie, A. W.; Penarrubia, J. (2009-11-06)
    We present the first spectroscopic analysis of the faint M31 satellite galaxies, AndXI and AndXIII, and a reanalysis of existing spectroscopic data for two further faint companions, And IX and AndXII. By combining data ...
  • A Keck/DEIMOS spectroscopic survey of the faint M31 satellites And XV and And XVI 

    Letarte, B.; Chapman, S. C.; Collins, M.; Ibata, R. A.; Irwin, M. J.; Ferguson, A. M. N.; Lewis, G. F.; Martin, N.; McConnachie, A.; Tanvir, N. (2009-01-07)
    We present the results of a spectroscopic survey of the recently discovered M31 satellites And XV and And XVI, lying at projected distances from the centre of M31 of 93 and 130 kpc respectively. These satellites lie to the ...
  • A Keck/Deimos Survey of Red Giant Branch Stars in the Outskirts of M31 

    Ferguson, Annette; Chapman, Scott; Ibata, Rodrigo; Irwin, Mike; Lewis, Geraint; McConnachie, Alan (2004-2004-)
    We are using the DEIMOS multi-object spectrograph on the Keck II 10m telescope to conduct a spectroscopic survey of red giant branch stars in the outskirts of M31. To date, velocities have been obtained for most of the ...
  • Kevin Hewitt (Draft Profile) 

    Hewitt, Kevin (2013)
  • Kimberley Hall (Draft Profile) 

    Hall, Kimberley (2013-05-27)
  • Kinematic and Chemical constraints on the formation of M31's inner and outer halo 

    Koch, A.; Rich, R. M.; Reitzel, D. B.; Martin, N. F.; Ibata, R. A.; Chapman, S. C.; Majewski, S. R.; Mori, M.; Loh, Y. -S; Ostheimer, J. C.; Tanaka, M. (2007-11-28)
    The halo of M31 shows a wealth of substructures that are consistent with satellite accretion. Here we report on kinematic and abundance results from Keck/DEIMOS spectroscopy in the calcium triplet region of over 3500 red ...
  • The kinematic footprints of five stellar streams in Andromeda's halo 

    Chapman, S. C.; Ibata, R.; Irwin, M.; Koch, A.; Letarte, B.; Martin, N.; Collins, M.; Lewis, G. F.; McConnachie, A.; Penarrubia, J.; Rich, R. M.; Trethewey, D.; Ferguson, A. M. N.; Huxor, A.; Tanvir, N. (2008-10)
    (abridged) We present a spectroscopic analysis of five stellar streams (`A', `B', `Cr', `Cp' and `D') as well as the extended star cluster, EC4, which lies within streamC, all discovered in the halo of M31 from our ...
  • The kinematic identification of a thick stellar disc in M31 

    Collins, M. L. M.; Chapman, S. C.; Ibata, R. A.; Irwin, M. J.; Rich, R. M.; Ferguson, A. M. N.; Lewis, G. F.; Tanvir, N.; Koch, A. (2010-10-25)
    We present the first characterization of a thick disc component in the Andromeda galaxy (M31) using kinematic data from the DEIMOS multi-object spectrograph instrument on Keck II. Using 21 fields in the South West of the ...
  • A kinematic study of the Andromeda dwarf spheroidal system 

    Collins, Michelle L. M.; Chapman, Scott C.; Rich, R. Michael; Ibata, Rodrigo A.; Martin, Nicolas F.; Irwin, Michael J.; Bate, Nicholas F.; Lewis, Geraint F.; Peñarrubia, Jorge; Arimoto, Nobuo; Casey, Caitlin M.; Ferguson, Annette M. N.; Koch, Andreas; McConnachie, Alan W.; Tanvir, Nial (2013-02-26)
    We present a homogeneous kinematic analysis of red giant branch stars within 18 of the 28 Andromeda dwarf spheroidal (dSph) galaxies, obtained using the Keck I LRIS and Keck II DEIMOS spectrographs. Based on their g-i ...
  • A kinematically selected, metal-poor stellar halo in the outskirts of M31 

    Chapman, S. C.; Ibata, R.; Lewis, G. F.; Ferguson, A. M. N.; Irwin, M.; McConnachie, A.; Tanvir, N. (2006-12-10)
    We present evidence for a metal-poor, [Fe/H]$\sim-1.4$ $\sigma$=0.2 dex, stellar halo component detectable at radii from 10 kpc to 70 kpc, in our nearest giant spiral neighbor, the Andromeda galaxy. This metal-poor sample ...
  • Kinematics of Outer Halo Globular Clusters in M31 

    Veljanoski, J.; Ferguson, A. M. N.; Mackey, A. D.; Huxor, A. P.; Irwin, M. J.; Côté, P.; Tanvir, N. R.; Bernard, E. J.; Chapman, S. C.; Ibata, R. A.; Fardal, M.; Lewis, G. F.; Martin, N. F.; McConnachie, A.; Peñarrubia, J. (2013-2013-)
    We present the first kinematic analysis of the far outer halo globular cluster (GC) population in the Local Group galaxy M31. Our sample contains 53 objects with projected radii of ~20-130 kpc, of which 44 have no previous ...
  • Kinetic Ising model for desorption from a chain 

    Geldart, D. J. W.; Kreuzer, H. J.; Rys, F. S. (1986-10)
    Adsorption along a linear chain of adsorption sites is considered in an Ising model with nearest neighbor interactions. The kinetics are studied in a master equation approach with transition probabilities describing single ...
  • Kinetics of 1115 surface reconstruction on Ir(100) 

    Watanabe, K.; Geldart, D. J. W.; Kreuzer, H. J. (1987-12)
    The dynamics of the 1115 reconstruction process on Ir(100) are studied on the basis of two-level rate equations. The surface energy as a function of the atomic displacement during the reconstruction is obtained by means ...
  • Kinetics of 1x1-]1x5 Surface Reconstruction on Ir(100) 

    WATANABE, K.; GELDART, DJW; KREUZER, HJ (1987-12)
    No abstract available.
  • Known and unknown SCUBA sources 

    Scott, Douglas; Borys, Colin; Halpern, Mark; Sajina, Anna; Chapman, Scott; Fahlman, Greg (2000-10-17)
    Summary and discussion of some projects to use SCUBA to target sources selected at other wavebands, as well as to find new sub-mm galaxies in `blank fields': FIRBACK galaxies; Lyman break galaxies and `the Blob'; HDF ...
  • The LABOCA Survey of the Extended Chandra Deep Field South 

    Weiss, A.; Kovacs, A.; Coppin, K.; Greve, T. R.; Walter, F.; Smail, Ian; Dunlop, J. S.; Knudsen, K. K.; Alexander, D. M.; Bertoldi, F.; Brandt, W. N.; Chapman, S. C.; Cox, P.; Dannerbauer, H.; De Breuck, C.; Gawiser, E.; Ivison, R. J.; Lutz, D.; Menten, K. M.; Koekemoer, A. M.; Kreysa, E.; Kurczynski, P.; Rix, H. -W; Schinnerer, E.; van der Werf, P. P. (2009-10-15)
    We present a sensitive 870 micron survey of the Extended Chandra Deep Field South (ECDFS) using LABOCA on the APEX telescope. The LABOCA ECDFS Submillimetre Survey (LESS) covers the full 30' x 30' field size of the ECDFS ...