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Browsing by Author "Hickox, R. C."
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ALMA observations of a z ≈ 3.1 protocluster : Star formation from active galactic nuclei and Lyman-alpha blobs in an overdense environment
Alexander, D. M.; Simpson, J. M.; Harrison, C. M.; Mullaney, J. R.; Smail, I.; Geach, J. E.; Hickox, R. C.; Karim, A.; Kubo, M.; Lehmer, B. D.; Matsuda, Y.; Rosario, D. J.; Stanley, F.; Swinbank, A. M.; Umehata, H.; Yamada, T.; Hine, Nancy (2016-09-21)We exploit Atacama Large Interferometer Array (ALMA) 870 μm observations to measure the star formation rates (SFRs) of eight X-ray detected active galactic nuclei (AGNs) in a z ≈ 3.1 protocluster, four of which reside in ... -
The angular clustering of infrared-selected obscured and unobscured quasars
DiPompeo, M. A.; Myers, A. D.; Hickox, R. C.; Geach, J. E.; Hainline, K. N. (2014-08-21)Recent studies of luminous infrared-selected active galactic nuclei (AGN) suggest that the reddest, most obscured objects display a higher angular clustering amplitude, and thus reside in higher mass darkmatter haloes. ... -
The Halo Mass of Optically Luminous Quasars at z ,F≈ ,F1-2 Measured via Gravitational Deflection of the Cosmic Microwave Background
Geach, J. E.; Peacock, J. A.; Myers, A. D.; Hickox, R. C.; Burchard, M. C.; Jones, M. L. (2019-03-27)We measure the average deflection of cosmic microwave background photons by quasars at 〈Z〉= 1.7. Our sample is selected from the Sloan Digital Sky Survey to cover the redshift range 0.9 ≤z≤2.2 with absolute i-band magnitudes ... -
Massive compact galaxies with high-velocity outflows : Morphological analysis and constraints on AGN activity
Sell, P. H.; Tremonti, C. A.; Hickox, R. C.; Diamond-Stanic, A. M.; Moustakas, J.; Coil, A.; Williams, A.; Rudnick, G.; Robaina, A.; Geach, J. E.; Heinz, S.; Wilcots, E. M. (2014-07-11)We investigate the process of rapid star formation quenching in a sample of 12 massive galaxies at intermediate redshift (z ~ 0.6) that host high-velocity ionized gas outflows (v > 1000 km s-1). We conclude that these fast ... -
A redline starburst: CO(2-1) observations of an Eddington-limited galaxy reveal star formation at its most extreme
Geach, J. E.; Hickox, R. C.; Diamond-Stanic, A. M.; Krips, M.; Moustakas, J.; Tremonti, C. A.; Coil, A. L.; Sell, P. H.; Rudnick, G. H. (2013-04-10)We report observations of the CO(2-1) emission of SDSS J1506+54, a compact (r(e) approximate to 135 pc) starburst galaxy at z = 0.6. SDSS J1506+ 54 appears to be forming stars close to the limit allowed by stellar radiation ... -
Stellar feedback as the origin of an extended molecular outflow in a starburst galaxy
Geach, James; Hickox, R. C.; Diamond-Stanic, A. M.; Krips, M.; Rudnick, G. H.; Tremonti, C. A.; Sell, P. H.; Coil, A. L.; Moustakas, J. (2014-12-04)Recent observations have revealed that starburst galaxies can drive molecular gas outflows through stellar radiation pressure. Molecular gas is the phase of the interstellar medium from which stars form, so these outflows ... -
Violent quenching : Molecular Gas Blown to 1000 km s -1 during a Major Merger
Geach, J. E.; Tremonti, C.; Diamond-Stanic, A. M.; Sell, P. H.; Kepley, A. A.; Coil, A. L.; Rudnick, G.; Hickox, R. C.; Moustakas, J.; Yang, Yujin (2018-08-23)We present Atacama Large Millimeter/submillimeter Array observations of a massive () compact ( pc) merger remnant at z = 0.66 that is driving a 1000 km s -1 outflow of cool gas, with no observational trace of an active ... -
Weighing obscured and unobscured quasar hosts with the cosmic microwave background
DiPompeo, M.A.; Myers, A. D.; Hickox, R. C.; Geach, James; Holder, G.; Hainline, K.N.; Hall, S.W. (2015-02)We cross-correlate a cosmic microwave background (CMB) lensing map with the projected space densities of quasars to measure the bias and halo masses of a quasar sample split into obscured and unobscured populations, the ...