Browsing Chapman, Scott by Title

Now showing items 28-47 of 211

  • Deep Gemini/GMOS imaging of an extremely isolated globular cluster in the Local Group 

    Mackey, A. D., A. M. N. Ferguson, M. J. Irwin, N. F. Martin, et al. 2009. "Deep Gemini/GMOS imaging of an extremely isolated globular cluster in the Local Group." Monthly Notices of the Royal Astronomical Society 401:533.
    We report on deep imaging of a remote M31 globular cluster, MGC1, obtained with Gemini/GMOS. Our colour-magnitude diagram for this object extends ~5 magnitudes below the tip of the red giant branch and exhibits features ...

  • Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z=1.5 

    Aravena, M., C. L. Carilli, M. Salvato, M. Tanaka, et al. 2012. "Deep observations of CO line emission from star-forming galaxies in a cluster candidate at z=1.5." Monthly Notices of the Royal Astronomical Society 426: 258.
    We report results from a deep Jansky Very Large Array (JVLA) search for CO 1-0 line emission from galaxies in a candidate galaxy cluster at z~1.55 in the COSMOS field. We target 4 galaxies with optical spectroscopic redshifts ...

  • Deep SAURON Spectral-Imaging of the diffuse Lyman-alpha halo LAB1 in SSA22 

    Bower, Richard, S. L. Morris, R. Bacon, R. J. Wilman, et al. 2004. "Deep SAURON Spectral-Imaging of the diffuse Lyman-alpha halo LAB1 in SSA22." Monthly Notices of the Royal Astronomical Society 351(1): 63-69
    We have used the SAURON panoramic integral field spectrograph to study the structure of the Ly-alpha emission-line halo, LAB1, surrounding the sub-millimeter galaxy SMM J221726+0013. This emission-line halo was discovered ...

  • A Deep WSRT 1.4 GHz Radio Survey of the Spitzer Space Telescope FLSv Region 

    Morganti, R., M. A. Garrett, S. Chapman, W. Baan, et al. 2004. "A Deep WSRT 1.4 GHz Radio Survey of the Spitzer Space Telescope FLSv Region." 424(1): 371-378
    The First Look Survey (FLS) is the first scientific product to emerge from the Spitzer Space Telescope. A small region of this field (the verification strip) has been imaged very deeply, permitting the detection of ...

  • Density Variations in the NW Star Stream of M31 

    Carlberg, R. G., Harvey B. Richer, Alan W. McConnachie, Mike Irwin, et al. 2011. "Density Variations in the NW Star Stream of M31." The Astrophysical Journal 731:124.
    The Pan Andromeda Archeological Survey (PAndAS) CFHT Megaprime survey of the M31-M33 system has found a star stream which extends about 120 kpc NW from the center of M31. The great length of the stream, and the likelihood ...

  • Detection of molecular gas in a distant submillimetre galaxy at z=4.76 with ATCA 

    Coppin, Kristen, Scott Chapman, Ian Smail, Mark Swinbank, et al. 2010. "Detection of molecular gas in a distant submillimetre galaxy at z=4.76 with ATCA." Monthly Notices of the Royal Astronomical Society 407:103
    We have detected the CO(2-1) transition from the submillimetre galaxy (SMG) LESSJ033229.4-275619 at z=4.755 using the new Compact Array Broadband Backend system on the Australian Telescope Compact Array. These data have ...

  • The disappearance of Lyα blobs: a GALEX search at z=0.8 

    Keel, William C., Raymond E. White III., Scott Chapman, and Rogier A. Windhorst. 2009. "The disappearance of Lyα blobs: a GALEX search at z=0.8." Astronomical Journal 138(3):986.
    Lyman alpha blobs - luminous, spatially extended emission-line nebulae, often lacking bright continuum counterparts - are common in dense environments at high redshift. Until recently, atmospheric absorption and filter ...

  • Discovery and analysis of three faint dwarf galaxies and a globular cluster in the outer halo of the Andromeda galaxy 

    Martin, N. F., R. A. Ibata, M. J. Irwin, S. Chapman, et al. 2006. "Discovery and analysis of three faint dwarf galaxies and a globular cluster in the outer halo of the Andromeda galaxy." Monthly Notices of the Royal Astronomical Society 371(4): 1983-1991
    We present the discovery of three faint dwarf galaxies and a globular cluster in the halo of the Andromeda galaxy (M31), found in our MegaCam survey that spans the southern quadrant of M31, from a projected distance of ~50 ...

  • The Discovery of Remote Globular Clusters in M33 

    Huxor, A., A. M. N. Ferguson, M. K. Barker, N. R. Tanvir, et al. 2009. "The Discovery of Remote Globular Clusters in M33." The Astrophysical Journal Letters, 698(2): 77-L81
    We present the discovery of four remote star clusters in M33, one of which is of an extended nature. Three of the clusters were discovered using survey data from the Isaac Newton Telescope Wide-Field Camera while one was ...

  • Do globular clusters possess Dark Matter halos? A case study in NGC 2419 

    Ibata, Rodrigo, Carlo Nipoti, Antonio Sollima, Michele Bellazzini, et al. 2012. "Do globular clusters possess Dark Matter halos? A case study in NGC 2419." Monthly Notices of the Royal Astronomical Society 428(4):3648.
    We use recently published measurements of the kinematics, surface brightness and stellar mass-to-light ratio of the globular cluster NGC 2419 to examine the possibility that this Galactic halo satellite is embedded in a ...

  • Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution 

    Chapman, S. C., A. W. Blain, R. Ibata, R. J. Ivison, et al. 2009. "Do submillimeter galaxies really trace the most massive dark matter halos? Discovery of a high-z cluster in a highly active phase of evolution." The Astrophysical Journal 691(1): 560-568
    We present detailed observations of a z~1.99 cluster of submillimeter galaxies (SMGs), discovered as the strongest redshift spike in our entire survey of ~100 SMGs across 800 square arcmin. It is the largest blank-field ...

  • Draco, a flawless dwarf galaxy 

    Segall, Mathieu, Rodrigo Ibata, Michael Irwin, Nicolas Martin, et al. 2007. "Draco, a flawless dwarf galaxy." Monthly Notices of the Royal Astronomical Society 375(3): 831-842
    The Draco dwarf spheroidal galaxy (dSph), with its apparent immense mass to light ratio and compact size, holds many clues to the nature of the enigmatic dark matter. Here we present deep photometric studies of this dwarf ...

  • Dynamical Structure of the Molecular Interstellar Medium in an Extremely Bright, Multiply Lensed z 3 Submillimeter Galaxy Discovered with Herschel 

    Riechers, Dominik A., A. Cooray, A. Omont, R. Neri, et al. 2011. "Dynamical Structure of the Molecular Interstellar Medium in an Extremely Bright, Multiply Lensed z 3 Submillimeter Galaxy Discovered with Herschel." The Astrophysical Journal Letters 733:L12
    We report the detection of CO 5-4, 3-2, and 1-0 emission in the strongly lensed, Herschel/SPIRE-selected submillimeter galaxy (SMG) HLSW-01 at z=2.9574+/-0.0001, using the Plateau de Bure Interferometer, the Combined Array ...

  • Dynamics in the satellite system of Triangulum: Is AndXXII a dwarf satellite of M33? 

    Chapman, S. C., L. Widrow, M. L. M. Collins, J. Dubinski, et al. 2012. "Dynamics in the satellite system of Triangulum: Is AndXXII a dwarf satellite of M33?." Monthly Notices of the Royal Astronomical Society 430(1): 37.
    We present results from a spectroscopic survey of the dwarf spheroidal And XXII and the two extended clusters EC1 and EC2. These three objects are candidate satellites of the Triangulum galaxy, M33, which itself is likely ...

  • The effect of lensing on the identification of bright SCUBA galaxies 

    Chapman, S. C., Ian Smail, R. J. Ivison, and A. W. Blain. 2002. "The effect of lensing on the identification of bright SCUBA galaxies." Monthly Notices of the Royal Astronomical Society 335(1): 17-L21
    Spectroscopic surveys of luminous submillimetre-selected sources have uncovered optically-bright galaxies at z<1 close to the positions of several submillimetre (submm) sources. Naive statistical analyses suggest that ...

  • Energetic galaxy-wide outflows in high-redshift ultra-luminous infrared galaxies hosting AGN activity 

    Harrison, C. M., D. M. Alexander, A. M. Swinbank, Ian Smail, et al. 2012. "Energetic galaxy-wide outflows in high-redshift ultra-luminous infrared galaxies hosting AGN activity." Monthly Notices of the Royal Astronomical Society 426:1073.
    We present integral field spectroscopy observations, covering the [O III]4959,5007 emission-line doublet of eight high-redshift (z=1.4-3.4) ultra-luminous infrared galaxies (ULIRGs) that host Active Galactic Nuclei (AGN) ...

  • Evidence for a Major Merger Origin of High Redshift Sub-millimeter Galaxies 

    Conselice, Christopher J., Scott C. Chapman, and Rogier A. Windhorst. 2003. "Evidence for a Major Merger Origin of High Redshift Sub-millimeter Galaxies." The Astrophysical Journal 596(1): 5-L8
    Sub-mm detected galaxies located at redshifts $z > 1$ host a major fraction of the bolometric luminosity at high redshifts due to thermal emission from heated dust grains, yet the nature of these objects remains a mystery. ...

  • Evidence for an accretion origin for the outer halo globular cluster system of M31 

    Mackey, Dougal, Avon Huxor, Annette Ferguson, Mike Irwin, et al. 2010. "Evidence for an accretion origin for the outer halo globular cluster system of M31." The Astrophysical Journal Letters 717(1): L11.
    We use a sample of newly-discovered globular clusters from the Pan-Andromeda Archaeological Survey (PAndAS) in combination with previously-catalogued objects to map the spatial distribution of globular clusters in the M31 ...

  • Evidence for extended, obscured starbursts in submm galaxies 

    Chapman, S. C., Ian Smail, R. Windhorst, T. Muxlow, et al. 2004. "Evidence for extended, obscured starbursts in submm galaxies." The Astrophysical Journal 611(2): 732-738
    We compare high-resolution optical and radio imaging of 12 luminous submm galaxies at z=2.2+/-0.2 observed with HST and the MERLIN and VLA at comparable spatial resolution, 0.3" (2kpc). The radio emission traces the likely ...

  • Exploring the Properties of the M31 Halo Globular Cluster System 

    Huxor, A. P., A. M. N. Ferguson, N. R. Tanvir, M. J. Irwin, et al. 2011. "Exploring the Properties of the M31 Halo Globular Cluster System." Monthly Notices of the Royal Astronomical Society 414:770.
    Following on from our discovery of a significant population of M31 outer halo globular clusters (GCs), and updates to the Revised Bologna Catalogue of M31 GCs, we investigate the GC system of M31 out to an unprecedented ...