Browsing Chapman, Scott by Title

Now showing items 182-201 of 211

  • Strangers in the night: Discovery of a dwarf spheroidal galaxy on its first Local Group infall 

    Chapman, S. C., J. Penarrubia, R. Ibata, A. McConnachie, et al. 2007. "Strangers in the night: Discovery of a dwarf spheroidal galaxy on its first Local Group infall." The Astrophysical Journal 662(2): 79-L82
    We present spectroscopic observations of the AndXII dwarf spheroidal galaxy using DEIMOS/Keck-II, showing it to be moving rapidly through the Local Group (-556 km/s heliocentric velocity, -281 km/s relative to Andromeda ...

  • The structure of star clusters in the outer halo of M31 

    Tanvir, N. R., A. D. Mackey, A. M. N. Ferguson, A. P. Huxor, et al. 2012. "The structure of star clusters in the outer halo of M31." Monthly Notices of the Royal Astronomical Society 422:162.
    We present a structural analysis of halo star clusters in M31 based on deep Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) imaging. The clusters in our sample span a range in galactocentric projected distance ...

  • Sub-mm and near-IR observations of galaxies selected at 170 microns 

    Sajina, A., C. Borys, S. Chapman, H. Dole, et al. 2003. "Sub-mm and near-IR observations of galaxies selected at 170 microns." Monthly Notices of the Royal Astronomical Society 343(4): 1365-1375
    We present results from JCMT sub-mm observations of sources selected from the {\sl ISO} FIRBACK (Far-IR BACKground) survey, along with UKIRT near-IR imaging of a sub-sample. This gives valuable insight into the brightest ...

  • Submillimeter Galaxies at z 2: Evidence for Major Mergers & Constraints on Lifetimes, IMF and CO-H2 Conversion Factor 

    Tacconi, L. J., R. Genzel, I. Smail, R. Neri, et al. 2008. "Submillimeter Galaxies at z 2: Evidence for Major Mergers & Constraints on Lifetimes, IMF and CO-H2 Conversion Factor." The Astrophysical Journal 680(1): 246-262
    We report sub-arcsecond resolution IRAM PdBI millimeter CO interferometry of four z~2 submillimeter galaxies (SMGs), and sensitive CO (3-2) flux limits toward three z 2 UV-/optically selected star forming galaxies. The new ...

  • Submillimeter Observations of Millimeter Bright Galaxies Discovered by the South Pole Telescope 

    Greve, T. R., J. D. Vieira, A. Weiss, J. E. Aguirre, et al. 2012. "Submillimeter Observations of Millimeter Bright Galaxies Discovered by the South Pole Telescope." The Astrophysical Journal 756:101.
    We present APEX SABOCA 350micron and LABOCA 870micron observations of 11 representative examples of the rare, extremely bright (S_1.4mm > 15mJy), dust-dominated millimeter-selected galaxies recently discovered by the South ...

  • Submillimeter Observations of the Ultraluminous BAL Quasar APM 08279+5255 

    Lewis, Geraint F., Scott C. Chapman, Rodrigo A. Ibata, Michael J. Irwin, et al. 1998. "Submillimeter Observations of the Ultraluminous BAL Quasar APM 08279+5255." The Astrophysical Journal 505(1): 1-L5
    With an inferred bolometric luminosity of $5\times10^{15}{\rm \lsun}$, the recently identified z=3.87, broad absorption line quasar APM 08279+5255 is apparently the most luminous object currently known. As half of its ...

  • Submillimetre and far-infrared spectral energy distributions of galaxies: the luminosity-temperature relation and consequences for photometric redshifts 

    Blain, Andrew W., V. E. Barnard, and Scott C. Chapman. 2003. "Submillimetre and far-infrared spectral energy distributions of galaxies: the luminosity-temperature relation and consequences for photometric redshifts." Monthly Notices of the Royal Astronomical Society 338(3): 733-744
    The spectral energy distributions (SEDs) of dusty high-redshift galaxies are poorly sampled in frequency and spatially unresolved. Their form is crucially important for estimating the large luminosities of these galaxies ...

  • Submillimetre Detection of the z=2.83 Lyman-Break Galaxy, Westphal-MM8, and Implications for SCUBA2 

    Chapman, Scott C., and Caitlin M. Casey. 2009. "Submillimetre Detection of the z=2.83 Lyman-Break Galaxy, Westphal-MM8, and Implications for SCUBA2." Monthly Notices of the Royal Astronomical Society 398:1615.
    We present confusion limited submillimetre (submm) observations with the SCUBA camera on the JCMT of the z=2.83 Lyman-break galaxy (LBG), Westphal-MM8, reaching an 850um sensitivity even greater than that achieved in the ...

  • A submillimetre galaxy at z=4.76 in the LABOCA survey of the Extended Chandra Deep Field South 

    Coppin, Kristen, Ian Smail, David M. Alexander, Axel Weiss, et al. 2009. "A submillimetre galaxy at z=4.76 in the LABOCA survey of the Extended Chandra Deep Field South." 395(4): 1905-1914
    We report on the identification of the highest redshift submm-selected source currently known: LESSJ033229.4-275619. This source was detected in the Large Apex BOlometer CAmera (LABOCA) Extended Chandra Deep Field South ...

  • 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 ...