Browsing by Author "Auld, R."

Now showing 1 - 10 of 10
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    A detailed gravitational lens model based on submillimeter array and keck adaptive optics imaging of a Herschel-atlas submillimeter galaxy AT z = 4.243.
    (2012) Bussmann, R. S.; Kim, Sam; Gurwell, M. A.; Fu, Hai; Smith, D. J. B.; Dye, S.; Auld, R.; Baes, M.; Baker, A. J.; Bonfield, D.; Cava, A.
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    Discovery of a Multiply-Lensed Submillimeter Galaxy in Early HerMES Herschel/SPIRE Data
    (2011) Conley, A.; Kim, Sam; Cooray, Asantha; Vieira, J. D.; González Solares, E. A.; Aguirre, J. E.; Amblard, A.; Auld, R.; Baker, A. J.; Beelen, A.; Blain, A.
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    Dynamical structure of the molecular interstellar medium in an extremely bright, multiply lensed z 3 submillimeter galaxy discovered with Herschel.
    (2011) Riechers, Dominik A.; Kim, Sam; Cooray, Asantha; Omont, A.; Neri, R.; Harris, A. I.; Baker, A. J.; Cox, P.; Frayer, D. T.; Carpenter, J. M.; Auld, R.
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    H-ATLAS: THE COSMIC ABUNDANCE OF DUST FROM THE FAR-INFRARED BACKGROUND POWER SPECTRUM
    (2013) Thacker, Cameron; Cooray, Asantha; Smidt, Joseph; De Bernardis, Francesco; Mitchell-Wynne, K.; Amblard, A.; Auld, R.; Baes, M.; Clements, D. L.; Dariush, A.; De Zotti, G.; Dunne, L.; Eales, S.; Hopwood, R.; Hoyos, C.; Ibar, E.; Jarvis, M.; Maddox, S.; Michalowski, M. J.; Pascale, E.; Scott, D.; Serjeant, S.; Smith, M. W. L.; Valiante, E.; van der Werf, P.
    We present a measurement of the angular power spectrum of the cosmic far-infrared background (CFIRB) anisotropies in one of the extragalactic fields of the Herschel Astrophysical Terahertz Large Area Survey at 250, 350, and 500 mu m bands. Consistent with recent measurements of the CFIRB power spectrum in Herschel-SPIRE maps, we confirm the existence of a clear one-halo term of galaxy clustering on arcminute angular scales with large-scale two-halo term of clustering at 30 arcmin to angular scales of a few degrees. The power spectrum at the largest angular scales, especially at 250 mu m, is contaminated by the Galactic cirrus. The angular power spectrum is modeled using a conditional luminosity function approach to describe the spatial distribution of unresolved galaxies that make up the bulk of the CFIRB. Integrating over the dusty galaxy population responsible for the background anisotropies, we find that the cosmic abundance of dust, relative to the critical density, to be between Omega(dust) = 10-6 and 8 x 10(-6) in the redshift range z similar to 0-3. This dust abundance is consistent with estimates of the dust content in the universe using quasar reddening and magnification measurements in the Sloan Digital Sky Survey.
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    H2O emission in high-z ultra-luminous infrared galaxies
    (2013) Omont, A.; Yang, C.; Cox, P.; Neri, R.; Beelen, A.; Bussmann, R. S.; Gavazzi, R.; van der Werf, P.; Riechers, D.; Downes, D.; Krips, M.; Dye, S.; Ivison, R.; Vieira, J. D.; Weiss, A.; Aguirre, J. E.; Baes, M.; Baker, A. J.; Bertoldi, F.; Cooray, A.; Dannerbauer, H.; De Zotti, G.; Eales, S. A.; Fu, H.; Gao, Y.; Guelin, M.; Harris, A. I.; Jarvis, M.; Lehnert, M.; Leeuw, L.; Lupu, R.; Menten, K.; Michalowski, M. J.; Negrello, M.; Serjeant, S.; Temi, P.; Auld, R.; Dariush, A.; Dunne, L.; Fritz, J.; Hopwood, R.; Hoyos, C.; Ibar, E.; Maddox, S.; Smith, M. W. L.; Valiante, E.; Bock, J.; Bradford, C. M.; Glenn, J.; Scott, K. S.
    Using the IRAM Plateau de Bure interferometer (PdBI), we report the detection of water vapor in six new lensed ultra-luminous starburst galaxies at high redshift, discovered in the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). The sources are detected either in the 2(02)-1(11) or 2(11)-2(02) H2O emission lines with integrated line fluxes ranging from 1.8 to 14 Jy km s(-1). The corresponding apparent luminosities are mu L-H2O similar to 3-12 x 10(8) L-circle dot, where mu is the lensing magnification factor (3 < mu < 12). These results confirm that H2O lines are among the strongest molecular lines in high-z ultra-luminous starburst galaxies, with intensities almost comparable to those of the high-J CO lines, and similar profiles and line widths (similar to 200-900 km s(-1)). With the current sensitivity of the PdBI, the water lines can therefore easily be detected in high-z lensed galaxies (with F(500 mu m) > 100 mJy) discovered in the Herschel surveys. Correcting the luminosities for amplification, using existing lensing models, L-H2O is found to have a strong dependence on the infrared luminosity, varying as similar to L-IR(1.2). This relation, which needs to be confirmed with better statistics, may indicate a role of radiative (infrared) excitation of the H2O lines, and implies that high-z galaxies with L-IR greater than or similar to 10(13) L-circle dot tend to be very strong emitters in water vapor, that have no equivalent in the local universe.
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    Measurements of co redshifts with Z-spec for lensed submillimeter galaxies discovered in the H-atlas survey.
    (2012) Lupu, R. E.; Kim, Sam; Scott, K. S.; Aguirre, J. E.; Aretxaga, I.; Auld, R.; Barton, E.; Beelen, A.; Bertoldi, F.; Bock, J. J.; Bonfield, D.
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    Modeling of the HerMES submillimeter source lensed by a dark matter dominated foreground group of galaxies.
    (2011) Gavazzi, R.; Kim, Sam; Cooray, Asantha; Conley, A.; Aguirre, J. E.; Amblard, A.; Auld, R.; Beelen, A.; Blain, A.; Blundell, R.; Bock, J.
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    Redshift Determination and CO Line Excitation Modeling for the Multiply-Lensed Galaxy HLSW-01.
    (2011) Scott, K. S.; Kim, Sam; Lupu, R. E.; Aguirre, J. E.; Auld, R.; Aussel, H.; Baker, A. J.; Beelen, A.; Bock, J.; Bradford, C. M.|Brisbin, D.
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    Spitzer imaging of Herschel-atlas gravitationally lensed submillimeter sources.
    (2011) Hopwood, R.; Kim, Sam; Wardlow, Julie L.; Cooray, Asantha; Khostovan, A. A.; Negrello, Mattia; Cunha, E. da; Burgarella, D.; Aretxaga, I.; Auld, R.; Baes, M.
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    Spitzer-irac identification of Herschel-atlas spire sources.
    (2012) Kim, Sam; Wardlow, Julie L.; Cooray, Asantha; Fleuren, S.; Sutherland, W.; Khostovan, A. A.; Auld, R.; Baes, M.; Bussmann, R. S.; Buttiglione, S.; Cava, A.