Now showing items 234-253 of 532

  • 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 ...
  • 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 ...
  • The LABOCA survey of the Extended Chandra Deep Field South - radio and mid-infrared counterparts to submillimetre galaxies 

    Biggs, A. D.; Ivison, R. J.; Ibar, E.; Wardlow, J. L.; Dannerbauer, H.; Smail, Ian; Walter, F.; Weiss, A.; Chapman, S. C.; Coppin, K. E. K.; De Breuck, C.; Dickinson, M.; Knudsen, K. K.; Mainieri, V.; Menten, K.; Papovich, C. (2010-12-01)
    We present radio and infrared (3.6-24um) counterparts to submillimetre galaxies (SMGs) detected in the Extended Chandra Deep Field South with the LABOCA 870-um bolometer camera on the 12-m Atacama Pathfinder Experiment. ...
  • A LABOCA survey of the Extended Chandra Deep Field South - submillimeter properties of near-IR selected galaxies 

    Greve, T. R.; Weiss, A.; Walter, F.; Smail, I.; Zheng, X. Z.; Knudsen, K. K.; Coppin, K. E. K.; Kovacs, A.; Bell, E. F.; de Breuck, C.; Dannerbauer, H.; Dickinson, M.; Gawiser, E.; Lutz, D.; Rix, H. -W; Schinnerer, E.; Alexander, D.; Bertoldi, F.; Brandt, W. N.; Chapman, S. C.; Ivison, R. J.; Koekemoer, A. M.; Kreysa, E.; Kurczynski, P.; Menten, K.; Siringo, G.; Swinbank, M.; van der Werf, P. (2009-03-31)
    Using the 330hr ESO-MPG 870-micron survey of the Extended Chandra Deep Field South (ECDF-S) obtained with the Large Apex BOlometer CAmera (LABOCA) on the Atacama Pathfinder EXperiment (APEX), we have carried out a stacking ...
  • The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies 

    Wardlow, J. L.; Smail, Ian; Coppin, K. E. K.; Alexander, D. M.; Brandt, W. N.; Danielson, A. L. R.; Luo, B.; Swinbank, A. M.; Walter, F.; Weiss, A.; Xue, Y. Q.; Zibetti, S.; Bertoldi, F.; Biggs, A. D.; Chapman, S. C.; Dannerbauer, H.; Dunlop, J. S.; Gawiser, E.; Ivison, R. J.; Knudsen, K. K.; Kovacs, A.; Lacey, C. G.; Menten, K. M.; Padilla, N.; Rix, H. -W; van der Werf, P. P. (2010-06-10)
    [abridged] We derive photometric redshifts from 17-band optical to mid-IR photometry of 74 robust counterparts to 68 of the 126 submillimetre galaxies (SMGs) selected at 870um by LABOCA observations in the ECDFS. The median ...
  • The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies 

    Hickox, Ryan C.; Wardlow, J. L.; Smail, Ian; Myers, A. D.; Alexander, D. M.; Swinbank, A. M.; Danielson, A. L. R.; Stott, J. P.; Chapman, S. C.; Coppin, K. E. K.; Dunlop, J. S.; Gawiser, E.; Lutz, D.; van der Werf, P.; Weiss, A. (2011-12-01)
    We present a measurement of the spatial clustering of submillimetre galaxies (SMGs) at z = 1-3. Using data from the 870 micron LESS survey, we employ a novel technique to measure the cross-correlation between SMGs and ...
  • The LABOCA survey of the Extended Chandra Deep Field South: Two modes of star formation in AGN hosts? 

    Lutz, D.; Mainieri, V.; Rafferty, D.; Shao, L.; Hasinger, G.; Weiss, A.; Walter, F.; Smail, I.; Alexander, D. M.; Brandt, W. N.; Chapman, S.; Coppin, K.; Schreiber, N. M. Forster; Gawiser, E.; Genzel, R.; Greve, T. R.; Ivison, R. J.; Koekemoer, A. M.; Kurczynski, P.; Menten, K. M.; Nordon, R.; Popesso, P.; Schinnerer, E.; Silverman, J. D.; Wardlow, J.; Xue, Y. Q. (2010-01-30)
    We study the co-existence of star formation and AGN activity in X-ray selected AGN by analyzing stacked 870um submm emission from a deep and wide map of the Extended Chandra Deep Field South, obtained with LABOCA at the ...
  • THE LARGE APEX BOLOMETER CAMERA SURVEY OF THE EXTENDED CHANDRA DEEP FIELD SOUTH 

    Wei, 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. (Published by the University of Chicago Press for the American Astronomical Society., 2009)
    No abstract available.
  • Large gas reservoirs and free-free emission in two lensed star-forming galaxies at z=2.7 

    Aravena, M.; Murphy, E. J.; Aguirre, J. E.; Ashby, M. L. N.; Benson, B. A.; Bothwell, M.; Brodwin, M.; Carlstrom, J. E.; Chapman, S. C.; Crawford, T. M.; de Breuck, C.; Fassnacht, C. D.; Gonzalez, A. H.; Greve, T. R.; Gullberg, B.; Hezaveh, Y.; Holder, G. P.; Holzapfel, W. L.; Keisler, R.; Malkan, M.; Marrone, D. P.; McIntyre, V.; Reichardt, C. L.; Sharon, K.; Spilker, J. S.; Stalder, B.; Stark, A. A.; Vieira, J. D.; Weiss, A. (2013-05-02)
    We report the detection of CO(1-0) line emission in the bright, lensed star-forming galaxies SPT-S 233227-5358.5 (z=2.73) and SPT-S 053816-5030.8 (z=2.78), using the Australia Telescope Compact Array (ATCA). Both galaxies ...
  • Large surface radiative forcing from topographic blowing snow residuals measured in the High Arctic at Eureka 

    Lesins, G.; Bourdages, L.; Duck, T. J.; Drummond, J. R.; Eloranta, E. W.; Walden, V. P. (2009)
    No abstract available.
  • Large surface radiative forcing from topographic blowing snow residuals measured in the High Arctic at Eureka 

    Lesins, G.; Bourdages, L.; Duck, T. J.; Drummond, J. R.; Eloranta, E. W.; Walden, V. P. (2009)
    No abstract available.
  • Large-scale enhancements in NO/NOy from subsonic aircraft emissions: Comparisons with observations 

    Witte, JC; Folkins, IA; Neima, J.; Ridley, BA; Walega, JG; Weinheimer, AJ (1997-12)
    No abstract available.
  • The large-scale structure of the halo of the Andromeda Galaxy Part I: global stellar density, morphology and metallicity properties 

    Ibata, Rodrigo A.; Lewis, Geraint F.; McConnachie, Alan W.; Martin, Nicolas F.; Irwin, Michael J.; Ferguson, Annette M. N.; Babul, Arif; Bernard, Edouard J.; Chapman, Scott C.; Collins, Michelle; Fardal, Mark; Mackey, A. D.; Navarro, Julio; Penarrubia, Jorge; Rich, R. Michael; Tanvir, Nial; Widro, Lawrence (2013-11-22)
    We present an analysis of the large-scale structure of the halo of the Andromeda galaxy, based on the Pan-Andromeda Archeological Survey (PAndAS), currently the most complete map of resolved stellar populations in any ...
  • Lattice sums for dipolar systems 

    Fujiki, N. M.; De'Bell, K.; Geldart, D. J. W. (1987-12/01)
    A general method for the evaluation of lattice sums determining the effective parameters in the Hamiltonian of a dipolar magnetic system is described. The anisotropy of the Hamiltonian is examined for crystal structures ...
  • Lattice-Gas-Model Approach to Understanding the Structures of Lithium Transition-Metal Oxides Limo(2) 

    LI, W.; REIMERS, JN; DAHN, JR (1994-01)
    No abstract available.