Browsing Chapman, Scott by Title

Now showing items 106-125 of 211

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

    Banerji, Manda, Scott C. Chapman, Ian Smail, S. Alaghband-Zadeh, et al. 2011. "Luminous Starbursts in the Redshift Desert at z 1-2: Star Formation Rates, Masses & Evidence for Outflows." Monthly Notices of the Royal Astronomical Society 418:1071.
    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, William E. Harris, Annette M. N. Ferguson, Avon Huxor, et al. 2011. "The M33 Globular Cluster System with PAndAS Data: The Last Outer Halo Cluster?." The Astrophysical Journal 730: 112.
    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, Andrew W. Blain, Mark Swinbank, Ian Smail, et al. 2013. "Mapping the Clumpy Structures within Submillimeter Galaxies using Laser-Guide Star Adaptive Optics Spectroscopy." The Astrophysical Journal 767(2):151
    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., Scott C. Chapman, R. M. Rich, Rodrigo A. Ibata, et al. 2013. "The masses of Local Group dwarf spheroidal galaxies: The death of the universal mass profile." The Astrophysical Journal 783(1):7.
    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 ...

  • Measurement of the Sunyaev-Zel'dovich Increment in Massive Galaxy Clusters 

    Zemcov, Michael, Mark Halpern, Colin Borys, Scott Chapman, et al. 2003. "Measurement of the Sunyaev-Zel'dovich Increment in Massive Galaxy Clusters." Monthly Notices of the Royal Astronomical Society 346(4): 1179-1188
    We have detected the Sunyaev-Zel'dovich (SZ) increment at 850 microns in two galaxy clusters (Cl 0016+16 and MS 1054.4-0321) using SCUBA (Sub-millimetre Common User Bolometer Array) on the James Clerk Maxwell Telescope. ...

  • Mid- to far infrared properties of star-forming galaxies and active galactic nuclei 

    Magdis, G. E., D. Rigopoulou, G. Helou, D. Farrah, et al. 2013. "Mid- to far infrared properties of star-forming galaxies and active galactic nuclei." Astronomy and Astrophysics 558: A136
    We study the mid- to far-IR properties of a 24um-selected flux-limited sample (S24 > 5mJy) of 154 intermediate redshift (~0.15), infrared luminous galaxies, drawn from the 5MUSES survey. By combining existing mid-IR ...

  • A Mid-Infrared Imaging Survey of Submillimeter-Selected Galaxies with the Spitzer Space Telescope 

    Laura J. Hainline, A. W. Blain, Ian Smail, D. T. Frayer, S. C. Chapman, R. J. Ivison,D.M.Alexander,. 2009. "A Mid-Infrared Imaging Survey of Submillimeter-Selected Galaxies with the <I>Spitzer Space Telescope</I>." The Astrophysical Journal 699(2): 1610-1632.
    We present <I>Spitzer</I>-IRAC and MIPS mid-IR observations of a sample of 73 radio-detected submillimeter-selected galaxies (SMGs) with spectroscopic redshifts, the largest such sample published to date. From our data, ...

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

    Menéndez-Delmestre, Karín, Andrew W. Blain, Dave M. Alexander, Ian Smail, et al. 2007. "Mid-Infrared Spectroscopy of High Redshift Submillimeter Galaxies: First Results." The Astrophysical Journal 655(2): 65-L68
    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&lt;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, Andrew W. Blain, Ian Smail, Dave M. Alexander, et al. 2009. "Mid-Infrared Spectroscopy of Submillimeter Galaxies: Extended Star Formation in Massive High Redshift Galaxies." The Astrophysical Journal 699(1):667.
    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 ...

  • Modeling the evolution of infrared luminous galaxies: the influence of the Luminosity-Temperature distribution 

    Lewis, Geraint F., Scott C. Chapman, and George Helou. 2005. "Modeling the evolution of infrared luminous galaxies: the influence of the Luminosity-Temperature distribution." The Astrophysical Journal 621(1): 32-40
    The evolution of the luminous infrared galaxy population is explored using a pure luminosity evolution model which incorporates the locally observed luminosity-temperature distribution for IRAS galaxies. Pure luminosity ...

  • Molecular Gas in Submillimetre-Faint, Star-Forming Ultraluminous Galaxies at z>1 

    Casey, C. M., S. C. Chapman, R. Neri, F. Bertoldi, et al. 2009. "Molecular Gas in Submillimetre-Faint, Star-Forming Ultraluminous Galaxies at z>1." Monthly Notices of the Royal Astronomical Society 415:2723.
    [abridged] We present interferometric CO observations of twelve z~2 submillimetre-faint, star-forming radio galaxies (SFRGs) which are thought to be ultraluminous infrared galaxies (ULIRGs) possibly dominated by warmer ...

  • Most Submillimetre Galaxies are Major Mergers 

    Engel, H., L. J. Tacconi, R. I. Davies, R. Neri, et al. 2010. "Most Submillimetre Galaxies are Major Mergers." The Astrophysical Journal 724(1):233.
    We analyse subarcsecond resolution interferometric CO line data for twelve sub-millimetre-luminous (S850um > 5mJy) galaxies with redshifts between 1 and 3, presenting new data for four of them. Morphologically and kinematically ...

  • The nature and origin of substructure in the outskirts of M31. I. Surveying the stellar content with the hubble space telescope advanced camera for surveys 

    Richardson J.C., Ferguson A.M.N., Johnson R.A., Irwin M.J., Faria D.C., Chapman S.C., Tanvir N.R., Ibata R.A., Johnston K.V., Lewis G.F.,McConnachie A.W.,. 2008. "The nature and origin of substructure in the outskirts of M31. I. Surveying the stellar content with the hubble space telescope advanced camera for surveys." Astron.J.Astronomical Journal 135(6): 1998-2012.
    No abstract available.

  • The nature of a gravitationally lensed sub-millimetre arc in MS0451.6-0305: two interacting galaxies at z~2.9? 

    Borys, C., S. C. Chapman, M. Donahue, G. Fahlman, et al. 2004. "The nature of a gravitationally lensed sub-millimetre arc in MS0451.6-0305: two interacting galaxies at z~2.9?." Monthly Notices of the Royal Astronomical Society 352(3): 759-767
    We present a new SCUBA image of the cluster MS0451.6-0305, which exhibits strong, extended sub-mm flux at 850 microns. The most striking feature in the map is an elongated region of bright sub-mm emission, with a flux ...

  • The nature of the bright submillimeter galaxy population: a radio pre-selected sample with I>25 

    Chapman, S. C., E. Richards, G. Lewis, G. Wilson, et al. 2001. "The nature of the bright submillimeter galaxy population: a radio pre-selected sample with I>25." The Astrophysical Journal 548(2): 147-L151
    Deep submillimetre surveys have successfully detected distant, star-forming galaxies, enshrouded in vast quantities of dust and which emit most of their energy at far infrared wavelengths. These luminous galaxies are an ...

  • Near-IR adaptive optics imaging of nuclear spiral structure in the Seyfert galaxy, NGC3227 

    Chapman, Scott C., Simon L. Morris, and Gordon A. H. Walker. 2002. "Near-IR adaptive optics imaging of nuclear spiral structure in the Seyfert galaxy, NGC3227." Monthly Notices of the Royal Astronomical Society 319(3): 666-676
    We present high spatial resolution, near-IR images in J, H, K of the nucleus of NGC3227, obtained with the Adaptive Optics bonnette on CFHT. The ~0.15 arcsec (17pc) resolution allows structures to be probed in the core ...

  • News from the Galactic suburbia: the chemical composition of the remote globular cluster NGC 2419 

    Mucciarelli, A., M. Bellazzini, R. Ibata, T. Merle, et al. 2012. "News from the Galactic suburbia: the chemical composition of the remote globular cluster NGC 2419." Monthly Notices of the Royal Astronomical Society 426:2889.
    We present the chemical analysis of 49 giant stars of the globular cluster NGC 2419, using medium resolution spectra collected with the multi-object spectrograph DEIMOS@Keck. Previous analysis of this cluster revealed a ...

  • The next generation virgo cluster survey (NGVS). I. Introduction to the survey 

    Ferrarese, L., P. Cote, J. -C Cuillandre, S. D. J. Gwyn, et al. 2012. "The next generation virgo cluster survey (NGVS). I. Introduction to the survey." The Astrophysical Journal 200(1): 4.
    No abstract available.

  • Non Axi-symmetric Anisotropy of Solar Wind Turbulence 

    Turner, A. J., G. Gogoberidze, S. C. Chapman, B. Hnat, et al. 2011. "Non Axi-symmetric Anisotropy of Solar Wind Turbulence." 107(9)
    A key prediction of turbulence theories is frame-invariance, and in magnetohydrodynamic (MHD) turbulence, axisymmetry of fluctuations with respect to the background magnetic field. Paradoxically the power in fluctuations ...

  • The nucleus of the Sagittarius dSph galaxy and M54: a window on the process of galaxy nucleation 

    Bellazzini, M., R. A. Ibata, S. C. Chapman, A. D. Mackey, et al. 2008. "The nucleus of the Sagittarius dSph galaxy and M54: a window on the process of galaxy nucleation." The Astronomical Journal 136(3): 1147-1170
    We present the results of a thorough study of the nucleus of the Sgr dwarf spheroidal galaxy and of the bright globular cluster M54 that resides within the same nucleus (Sgr,N). We have obtained accurate radial velocities ...