Browsing Chapman, Scott by Title

Now showing items 202-211 of 211

  • 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 ...

  • The X-ray Spectral Properties of SCUBA Galaxies 

    Alexander, D. M., F. E. Bauer, S. C. Chapman, I. Smail, et al. 2005. "The X-ray Spectral Properties of SCUBA Galaxies." The Astrophysical Journal 632(2): 736-750
    Deep SCUBA surveys have uncovered a large population of massive submm galaxies (SMGs) at z>~1. Although it is generally believed that these galaxies host intense star-formation activity, there is growing evidence that a ...