Browsing Chapman, Scott by Title

Now showing items 191-210 of 211

  • Submillimetre observations of a sample of broad absorption line quasars 

    Lewis, Geraint F., Scott C. Chapman, and Zdenka Kuncic. 2003. "Submillimetre observations of a sample of broad absorption line quasars." The Astrophysical Journal 596(1): 35-L38
    The broad absorption line (BAL) features seen in a small fraction of quasar optical/UV spectra are attributed to bulk outflows away from the quasar core. Observational evidence suggests that dust plays a key role in these ...

  • Submillimetre sources in rich cluster fields - source counts, redshift estimates, and cooling flow limits 

    Chapman, Scott C., Douglas Scott, Colin Borys, and Gregory G. Fahlman. 2002. "Submillimetre sources in rich cluster fields - source counts, redshift estimates, and cooling flow limits." Monthly Notices of the Royal Astronomical Society 330(1): 92-104
    Recent submillimetre surveys have revealed a population of dusty, high redshift sources of great cosmological significance for understanding dust-enshrouded star formation in distant galaxies, and for determining the origin ...

  • A submm survey of Lyman-alpha haloes in the SA22 protocluster at z=3.1 

    Geach, J. E., Y. Matsuda, Ian Smail, S. C. Chapman, et al. 2005. "A submm survey of Lyman-alpha haloes in the SA22 protocluster at z=3.1." Monthly Notices of the Royal Astronomical Society 363(4): 1398-1408
    We present the results from a submm survey of a sample of 23 giant Lya emitting nebulae in the overdensity at z=3.09 in the SA22 field. These objects, which have become known as Lya Blobs (LABs) have a diverse range of ...

  • A survey of molecular gas in luminous sub-millimetre galaxies 

    Bothwell, M. S., Ian Smail, S. C. Chapman, R. Genzel, et al. 2012. "A survey of molecular gas in luminous sub-millimetre galaxies." Monthly Notices of the Royal Astronomical Society 429(4): 3047.
    We present the results from a survey for 12CO emission in 40 luminous sub-millimetre galaxies (SMGs), with 850um fluxes of S850 = 4 - 20 mJy, conducted with the Plateau de Bure Interferometer. We detect 12CO emission in ...

  • An SZ-selected sample of the most massive galaxy clusters in the 2500-square-degree South Pole Telescope survey 

    Williamson, R., B. A. Benson, F. W. High, K. Vanderlinde, et al. 2011. "An SZ-selected sample of the most massive galaxy clusters in the 2500-square-degree South Pole Telescope survey." The Astrophysical Journal 738:139.
    The South Pole Telescope (SPT) is currently surveying 2500 deg^2 of the southern sky to detect massive galaxy clusters out to the epoch of their formation using the Sunyaev-Zel'dovich (SZ) effect. This paper presents a ...

  • Taking measure of the Andromeda halo: a kinematic analysis of the giant stream surrounding M31 

    Ibata, R., S. Chapman, A. M. N. Ferguson, M. Irwin, et al. 2004. "Taking measure of the Andromeda halo: a kinematic analysis of the giant stream surrounding M31." Monthly Notices of the Royal Astronomical Society 351(1): 117-124
    We present a spectroscopic survey of the giant stellar stream found in the halo of the Andromeda galaxy. Taken with the DEIMOS multi-object spectrograph on the Keck2 telescope, these data display a narrow velocity dispersion ...

  • The Three-Dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites 

    Conn, A. R., G. F. Lewis, R. A. Ibata, Q. A. Parker, et al. 2013. "The Three-Dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites." Astrophysical Journal 766(2): 120-120.
    No abstract available.

  • The Three-Dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites 

    Conn, Anthony R., Geraint F. Lewis, Rodrigo A. Ibata, Quentin A. Parker, et al. 2013. "The Three-Dimensional Structure of the M31 Satellite System; Strong Evidence for an Inhomogeneous Distribution of Satellites." The Astrophysical Journal 766(2):120.
    We undertake an investigation into the spatial structure of the M31 satellite system utilizing the distance distributions presented in a previous publication. These distances make use of the unique combination of depth and ...

  • The tidal trail of NGC205? 

    McConnachie, A., M. Irwin, G. Lewis, R. Ibata, et al. 2004. "The tidal trail of NGC205?." Monthly Notices of the Royal Astronomical Society 351(4): 94-L98
    Using data taken as part of the Isaac Newton Telescope Wide Field Camera (INT WFC) survey of M31, we have identified an arc-like overdensity of blue, presumably metal-poor, red giant branch stars in the north-west quadrant ...

  • Tracing the molecular gas in distant submillimetre galaxies via CO(1-0) imaging with the EVLA 

    Ivison, R. J., P. P. Papadopoulos, Ian Smail, T. R. Greve, et al. 2010. "Tracing the molecular gas in distant submillimetre galaxies via CO(1-0) imaging with the EVLA." Monthly Notices of the Royal Astronomical Society 412:1913.
    We report the results of a pilot study with the EVLA of 12CO J=1-0 emission from four SMGs at z=2.2-2.5, each with an existing detection of CO J=3-2. Using the EVLA's most compact configuration we detect strong, broad J=1-0 ...

  • A trio of new Local Group galaxies with extreme properties 

    McConnachie, Alan, Avon Huxor, Nicolas Martin, Mike Irwin, et al. 2008. "A trio of new Local Group galaxies with extreme properties." The Astrophysical Journal 688(2): 1009-1020
    We report on the discovery of three new dwarf galaxies in the Local Group. These galaxies are found in new CFHT/MegaPrime g,i imaging of the south-western quadrant of M31, extending our extant survey area to include the ...

  • Ultra Steep Spectrum radio sources in the Lockman Hole: SERVS identifications and redshift distribution at the faintest radio fluxes 

    Afonso, J., L. Bizzocchi, E. Ibar, M. Grossi, et al. 2011. "Ultra Steep Spectrum radio sources in the Lockman Hole: SERVS identifications and redshift distribution at the faintest radio fluxes." The Astrophysical Journal 743:122.
    Ultra Steep Spectrum (USS) radio sources have been successfully used to select powerful radio sources at high redshifts (z>~2). Typically restricted to large-sky surveys and relatively bright radio flux densities, it has ...

  • Understanding the nature of the optically faint radio sources and their connection to the submillimeter population 

    Chapman, Scott C., Geraint F. Lewis, Douglas Scott, Colin Borys, et al. 2002. "Understanding the nature of the optically faint radio sources and their connection to the submillimeter population." The Astrophysical Journal 570(2): 557-572
    We present a sample of 43 submillimeter sources detected (at >3 sigma), drawn from our program to follow-up optically faint radio sources with SCUBA. These sources already have associated radio and in many cases optical ...

  • Unearthing Foundations of a Cosmic Cathedral: Searching the Stars for M33's Halo 

    Cockcroft, Robert, Alan W. McConnachie, William E. Harris, Rodrigo Ibata, et al. 2012. "Unearthing Foundations of a Cosmic Cathedral: Searching the Stars for M33's Halo." 428(2): 1248-1262
    We use data from the Pan-Andromeda Archaeological Survey (PAndAS) to search for evidence of an extended halo component belonging to M33 (the Triangulum Galaxy). We identify a population of red giant branch (RGB) stars at ...

  • An upper limit to [C II] emission in a z ~= 5 galaxy 

    Marsden, Gaelen, Colin Borys, Scott C. Chapman, Mark Halpern, et al. 2005. "An upper limit to [C II] emission in a z ~= 5 galaxy." Monthly Notices of the Royal Astronomical Society 359(1): 43-46
    Low-ionization-state far-infrared (FIR) emission lines may be useful diagnostics of star-formation activity in young galaxies, and at high redshift may be detectable from the ground. In practice, however, very little is ...

  • Using [CI] to probe the Interstellar Medium in z~2.5 Sub-Millimeter Galaxies 

    Alaghband-Zadeh, S., S. C. Chapman, A. M. Swinbank, Ian Smail, et al. 2013. "Using [CI] to probe the Interstellar Medium in z~2.5 Sub-Millimeter Galaxies." Monthly Notices of the Royal Astronomical Society 435(2):1493
    We present new [CI](1-0) and 12CO(4-3) Plateau de Bure Interferometer observations of five Sub-Millimeter Galaxies (SMGs) and combine these with all available [CI](1-0) literature detections in SMGs to probe the gas ...

  • Using SCUBA to place upper limits on arcsecond scale CMB anisotropies at 850 microns 

    Borys, Colin, Scott C. Chapman, and Douglas Scott. 1999. "Using SCUBA to place upper limits on arcsecond scale CMB anisotropies at 850 microns." Monthly Notices of the Royal Astronomical Society 308(2): 527-538
    The SCUBA instrument on the James Clerk Maxwell Telescope has already had an impact on cosmology by detecting relatively large numbers of dusty galaxies at high redshift. Apart from identifying well-detected sources, such ...

  • A Vigorous Starburst in the SCUBA Galaxy N2 850.4 

    Smail, Ian, S. C. Chapman, R. J. Ivison, A. W. Blain, et al. 2003. "A Vigorous Starburst in the SCUBA Galaxy N2 850.4." Monthly Notices of the Royal Astronomical Society 342(4): 1185-1193
    We present optical and near-IR spectroscopy of a z=2.38 hyperluminous IR galaxy, covering the restframe wavelength range from 1000-5000A. It appears to comprise two components separated by less than 1" on the sky (<8kpc); ...

  • Weighing the Black Holes in z~2 Submillimeter-Emitting Galaxies Hosting Active Galactic Nuclei 

    Alexander, D. M., W. N. Brandt, I. Smail, A. M. Swinbank, et al. 2008. "Weighing the Black Holes in z~2 Submillimeter-Emitting Galaxies Hosting Active Galactic Nuclei." The Astronomical Journal 135(5): 1968-1981
    We place direct observational constraints on the black-hole masses of the cosmologically important z~2 submillimeter-emitting galaxy (SMG; f850>4mJy) population, and use measured host-galaxy masses to explore their ...

  • Westphal-MMD11: An interacting, submillimeter luminous Lyman break galaxy 

    Chapman, S. C., A. Shapley, C. Steidel, and R. Windhorst. 2002. "Westphal-MMD11: An interacting, submillimeter luminous Lyman break galaxy." The Astrophysical Journal 572(1): 1-L5
    We present new Hubble Space Telescope, high-resolution optical imaging of the submm luminous Lyman-break galaxy, Westphal-MMD11, an interacting starburst at z=2.979. The new imaging data, in conjunction with re-analysis ...