Browsing by Author "Smith, Howard"

Now showing items 1-7 of 7

    • Constraining the Evolution of Galaxies over the Interaction Sequence with Multiwavelength Observations and Simulations 

      Lanz, Lauranne (2013-10-18)
      Interactions are crucial for galaxy formation and profoundly affect their evolution. However, our understanding of the impact of interactions on star formation and activity of the central supermassive black hole remains ...

    • Merger Signatures in the Dynamics of Star-Forming Gas 

      Hung (洪肇伶), Chao-Ling; Hayward, Christopher C.; Smith, Howard A.; Ashby, Matthew L N; Lanz, Lauranne; Martínez-Galarza, Juan R.; Sanders, D. B.; Zezas, Andreas (American Astronomical Society, 2016)
      The recent advent of integral field spectrographs and millimeter interferometers has revealed the internal dynamics of many hundreds of star-forming galaxies. Spatially resolved kinematics have been used to determine the ...

    • Optical spectroscopic observations of gamma-ray blazars candidates I: preliminary results 

      Paggi, A.; Milisavljevic, Danny; Masetti, N.; Jiménez-Bailón, E.; Chavushyan, V.; Massaro, F.; Giroletti, M.; Smith, Howard A.; Margutti, R.; Tosti, G.; Martínez-Galarza, J. R.; Otí-Floranes, H.; Landoni, M.; Grindlay, Jonathan E.; Funk, S. (IOP Publishing, 2014)
      A significant fraction (~30%) of the γ-ray sources listed in the second Fermi/LAT (2FGL) catalog is still of unknown origin, being not yet associated with counterparts at lower energies. Using the available information at ...

    • Resolved Dust Emission in a Quasar at Z = 3.65 

      Clements, D. L.; Petitpas, Glen Raymond; Farrah, D.; Hatziminaoglou, E.; Babbedge, T.; Rowan-Robinson, M.; Pérez-Fournon, I.; Hernán-Caballero, Antonio; Castro-Rodríguez, Nieves; Lonsdale, C.; Surace, J.; Franceschini, A.; Wilkes, Belinda Jane; Smith, Howard A. (IOP Publishing, 2009)
      We present submillimeter observations of the z = 3.653 quasar SDSS 160705+533558 together with data in the optical and infrared. The object is unusually bright in the far-IR and submillimeter with an IR luminosity of ∼1014 ...

    • Simulated Galaxy Interactions as Probes of Merger Spectral Energy Distributions 

      Lanz, Lauranne; Hayward, Christopher C.; Zezas, Andreas; Smith, Howard A.; Ashby, Matthew L N; Brassington, Nicola; Fazio, Giovanni Gene; Hernquist, Lars Eric (IOP Publishing, 2014)
      We present the first systematic comparison of ultraviolet-millimeter spectral energy distributions (SEDs) of observed and simulated interacting galaxies. Our sample is drawn from the Spitzer Interacting Galaxy Survey and ...

    • The total infrared luminosity may significantly overestimate the star formation rate of quenching and recently quenched galaxies 

      Hayward, C. C.; Lanz, L.; Ashby, Matthew L N; Fazio, Giovanni Gene; Hernquist, Lars Eric; Martinez-Galarza, J. R.; Noeske, K.; Smith, Howard A.; Wuyts, S.; Zezas, Andreas (Oxford University Press (OUP), 2014)
      The total infrared (IR) luminosity is very useful for estimating the star formation rate (SFR) of galaxies, but converting the IR luminosity into an SFR relies on assumptions that do not hold for all galaxies. We test the ...

    • Variations of the Ism Compactness Across the Main Sequence of Star Forming Galaxies: Observations and Simulations 

      Martínez-Galarza, J. R.; Smith, Howard A.; Lanz, L; Hayward, Christopher C.; Zezas, Andreas; Rosenthal, L.; Weiner, A.; Hung, C.; Ashby, Matthew L N; Groves, B. (American Astronomical Society, 2016)
      The majority of star-forming galaxies follow a simple empirical correlation in the star formation rate (SFR) versus stellar mass (M∗) plane, usually referred to as the star formation Main Sequence (MS). Here we combine a ...