Browsing Physics & Atmospheric Science by Author "Chapman, Scott C."

Now showing items 1-20 of 38

  • Accurate Spectral energy distributions and selection effects for high-redshift dusty galaxies: a new hot population to discover with the Spitzer Space Telescope? 

    Blain, Andrew W.; Chapman, Scott C.; Smail, Ian; Ivison, Rob (2004-08-10)
    The spectral energy distributions (SEDs) of dust-enshrouded galaxies with powerful restframe far-infrared emission have been constrained by a range of ground-based and space-borne surveys. The IRAS catalog provides a ...

  • Adaptive optics near-IR imaging of NGC2992 - unveiling core structures related to radio figure-8 loops 

    Chapman, Scott C.; Morris, Simon L.; Alonso-Herrero, Almudena; Falcke, Heino (2000-05-11)
    We present near-IR adaptive optics, VLA radio and HST optical imaging of the nearby Seyfert galaxy NGC2992. Spiral structure and an extension to the West are traced down to the core region at the limiting resolution of our ...

  • B1933+503, a dusty radio quasar at z>2: implications for blank field sub-mm surveys? 

    Chapman, Scott C.; Scott, Douglas; Lewis, Geraint F.; Borys, Colin; Fahlman, Gregory G. (1998-10-27)
    We present a detailed mm-wave and optical study of the gravitational lens system B1933+503, discovered by Sykes et al.(1998) in the radio. This object is probably the most complex lens system known, with 10 lensed components ...

  • A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (Part II); Distances to the Satellites of M31 

    Conn, Anthony R.; Ibata, Rodrigo A.; Lewis, Geraint F.; Parker, Quentin A.; Zucker, Daniel B.; Martin, Nicolas F.; McConnachie, Alan W.; Irwin, Mike J.; Tanvir, Nial; Fardal, Mark A.; Ferguson, Annette M. N.; Chapman, Scott C.; Valls-Gabaud, David (2012-09-21)
    In `A Bayesian Approach to Locating the Red Giant Branch Tip Magnitude (PART I),' a new technique was introduced for obtaining distances using the TRGB standard candle. Here we describe a useful complement to the technique ...

  • Confirmation of a Dominating Hot-Dust Component in z~2 Star Forming ULIRGs 

    Casey, Caitlin M.; Chapman, Scott C. (2009-01-28)
    This submission has been withdrawn.

  • Constraining Dust and Molecular Gas Properties in Lyman Alpha Blobs at z 3 

    Yang, Yujin; Decarli, Roberto; Dannerbauer, Helmut; Walter, Fabian; Weiss, Axel; Leipski, Christian; Dey, Arjun; Chapman, Scott C.; Floc'h, Emeric Le; Prescott, Moire K. M.; Neri, Roberto; Borys, Colin; Matsuda, Yuichi; Yamada, Toru; Hayashino, Tomoki; Tapken, Christian; Menten, Karl M. (2011-10-07)
    In order to constrain the bolometric luminosities, dust properties and molecular gas content of giant Lyman alpha nebulae, the so-called Lyman alpha blobs, we have carried out a study of dust continuum and CO line emission ...

  • Constraining Star Formation and AGN in z~2 Massive Galaxies using High Resolution MERLIN Radio Observations 

    Casey, Caitlin M.; Chapman, Scott C.; Muxlow, Tom W. B.; Beswick, Rob J.; Alexander, David M.; Conselice, Christopher J. (2009-05-21)
    We present high spatial resolution MERLIN 1.4GHz radio observations of two high redshift (z~2) sources, RGJ123623 (HDF147) and RGJ123617 (HDF130), selected as the brightest radio sources from a sample of submillimetre-faint ...

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

    Conselice, Christopher J.; Chapman, Scott C.; Windhorst, Rogier A. (2003-10-10)
    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. ...

  • First detections of FIRBACK sources with SCUBA 

    Scott, Douglas; Lagache, Guilaine; Borys, Colin; Chapman, Scott C.; Halpern, Mark; Sajina, Anna; Ciliegi, Paolo; Clements, David L.; Dole, Herve; Oliver, Sebastian; Puget, Jean-Loup; Reach, William T.; Rowan-Robinson, Michael (1999-10-22)
    The FIRBACK (Far InfraRed BACKground) survey represents the deepest extensive 170 micron images obtained by the ISO satellite. The sources detected comprise about 10% of the Cosmic IR Background (CIB) seen by COBE, and, ...

  • The Infrared Counterparts of the Optically Unidentified CDF-S 1Ms Sources 

    Yan, Haojing; Windhorst, Rogier A.; Rottgering, Huub J. A.; Cohen, Seth H.; Odewahn, Stephen C.; Chapman, Scott C.; Keel, William C. (2003-03)
    The Chandra Deep Field South (CDF-S) 1Ms exposure produced a catalog of 346 X-ray sources, of which 59 were not visible on the VLT/FORS1 and the ESO-MPI/WFI deep R-band images to a limit of R_{vega}=26.1--26.7 mag. Using ...

  • A joint analysis of BLAST 250--500um and LABOCA 870um observations in the Extended Chandra Deep Field South 

    Chapin, Edward L.; Chapman, Scott C.; Coppin, Kristen E.; Devlin, Mark J.; Dunlop, James S.; Greve, Thomas R.; Halpern, Mark; Hasselfield, Matthew F.; Hughes, David H.; Ivison, Rob J.; Marsden, Gaelen; Moncelsi, Lorenzo; Netterfield, Calvin B.; Pascale, Enzo; Scott, Douglas; Smail, Ian; Viero, Marco; Walter, Fabian; Weiss, Axel; van der Werf, Paul (2011-02-11)
    We present a joint analysis of the overlapping BLAST 250, 350, 500um, and LABOCA 870um observations (from the LESS survey) of the ECDF-S. Out to z~3, the BLAST filters sample near the peak wavelength of far-infrared (FIR) ...

  • 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 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 ...

  • 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 ...

  • Luminous Starbursts in the Redshift Desert at z 1-2: Star Formation Rates, Masses & Evidence for Outflows 

    Banerji, Manda; Chapman, Scott C.; Smail, Ian; Alaghband-Zadeh, S.; Swinbank, A. M.; Dunlop, J. S.; Ivison, R. J.; Blain, A. W. (2011-08-01)
    We present a spectroscopic catalogue of 40 luminous starburst galaxies at z=0.7--1.7 (median z=1.3). 19 of these are submillimetre galaxies (SMGs) and 21 are submillimetre-faint radio galaxies (SFRGs). This sample helps ...

  • The M33 Globular Cluster System with PAndAS Data: The Last Outer Halo Cluster? 

    Cockcroft, Robert; Harris, William E.; Ferguson, Annette M. N.; Huxor, Avon; Ibata, Rodrigo; Irwin, Mike J.; McConnachie, Alan W.; Woodley, Kristin A.; Chapman, Scott C.; Lewis, Geraint F.; Puzia, Thomas H. (2011-01-12)
    We use CFHT/MegaCam data to search for outer halo star clusters in M33 as part of the Pan-Andromeda Archaeological Survey (PAndAS). This work extends previous studies out to a projected radius of 50 kpc and covers over 40 ...

  • Mapping the Clumpy Structures within Submillimeter Galaxies using Laser-Guide Star Adaptive Optics Spectroscopy 

    Menéndez-Delmestre, Karín; Blain, Andrew W.; Swinbank, Mark; Smail, Ian; Ivison, Rob J.; Chapman, Scott C.; Gonçalves, Thiago S. (2013-02-08)
    We present the first integral-field spectroscopic observations of high-redshift submillimeter-selected galaxies (SMGs) using Laser Guide Star Adaptive Optics (LGS-AO). We target H-alpha emission of three SMGs at redshifts ...

  • The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile 

    Collins, Michelle L. M.; Chapman, Scott C.; Rich, R. M.; 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 (2013-09-12)
    We investigate the claim that all dwarf spheroidal galaxies (dSphs) reside within halos that share a common, universal mass profile as has been derived for dSphs of the Galaxy. By folding in kinematic information for 25 ...

  • Mid-Infrared Spectroscopy of High Redshift Submillimeter Galaxies: First Results 

    Menéndez-Delmestre, Karín; Blain, Andrew W.; Alexander, Dave M.; Smail, Ian; Armus, Lee; Chapman, Scott C.; Frayer, Dave; Ivison, Rob J.; Teplitz, Harry (2007-02-01)
    We present mid-infrared spectra of 5 submillimeter galaxies at z=0.65-2.38 taken with the Spitzer Space Telescope. Four of these sources, at z<1.5, have strong PAH features and their composite spectrum is well fitted ...

  • Mid-Infrared Spectroscopy of Submillimeter Galaxies: Extended Star Formation in Massive High Redshift Galaxies 

    Menéndez-Delmestre, Karín; Blain, Andrew W.; Smail, Ian; Alexander, Dave M.; Chapman, Scott C.; Armus, Lee; Frayer, Dave; Ivison, Rob J.; Teplitz, Harry (2009-03-24)
    We used the Spitzer Infrared Spectrograph (IRS) to study the mid-IR properties and investigate the energetics of 24 Submillimeter Galaxies (SMGs). This is the largest sample of SMGs observed with Spitzer IRS and covers the ...