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CLIMBER: Galaxy-Halo Connection Constraints from Next-Generation Surveys
Alan N. Pearl, Rachel Bezanson, Andrew R. Zentner +5
In the coming decade, a new generation of massively multiplexed spectroscopic surveys, such as PFS, WAVES, and MOONS, will probe galaxies in the distant universe in vastly greater…
Cosmic voids: a novel probe to shed light on our Universe
Alice Pisani, Elena Massara, David N. Spergel +26
Cosmic voids, the less dense patches of the Universe, are promising laboratories to extract cosmological information. Thanks to their unique low density character, voids are extrem…
Chandra and JVLA observations of HST Frontier Fields cluster MACS J0717.5+3745
R. J. van Weeren, G. A. Ogrean, C. Jones +24
To investigate the relationship between thermal and non-thermal components in merger galaxy clusters, we present deep JVLA and Chandra observations of the HST Frontier Fields clust…
Frontier Fields Clusters: Deep Chandra Observations of the Complex Merger MACS J1149.6+2223
G. A. Ogrean, R. J. van Weeren, C. Jones +24
The HST Frontier Fields cluster MACS J1149.6+2223 is one of the most complex merging clusters, believed to consist of four dark matter halos. We present results from deep (365 ks)…
The XXL survey XIV. AAOmega redshifts for the southern XXL field
C. Lidman, F. Ardila, M. Owers +15
We present a catalogue containing the redshifts of 3,660 X-ray selected targets in the XXL southern field. The redshifts were obtained with the AAOmega spectrograph and 2dF fibre p…
Frontier Fields Clusters: Chandra and JVLA View of the Pre-Merging Cluster MACS J0416.1-2403
G. Ogrean, R. van Weeren, C. Jones +26
Merging galaxy clusters leave long-lasting signatures on the baryonic and non-baryonic cluster constituents, including shock fronts, cold fronts, X-ray substructure, radio halos, a…
X-ray Selected Galaxy Groups in Boötes
Bruna Vajgel, Christine Jones, Paulo A. A. Lopes +4
We present the X-ray and optical properties of the galaxy groups selected in the Chandra X-Boötes survey. Our final sample comprises 32 systems at \textbf{}, with 14 below…
Tracing the evolution of Active Galactic Nuclei host galaxies over the last 9 Gyrs of Cosmic time
Andy D. Goulding, William R. Forman, Ryan C. Hickox +11
We present the results of a combined galaxy population analysis for the host galaxies of active galactic nuclei (AGN) identified at 0 < z < 1.4 within the SDSS, Bootes and DEEP2 su…
A correlation between star formation rate and average black hole accretion in star forming galaxies
Chien-Ting J. Chen, Ryan C. Hickox, Stacey Alberts +14
We present a measurement of the average supermassive black hole accretion rate (BHAR) as a function of star formation rate (SFR) for galaxies in the redshift range 0.25<z<0.8. We s…
Black hole variability and the star formation-AGN connection: Do all star-forming galaxies host an AGN?
Ryan C. Hickox, James R. Mullaney, David M. Alexander +4
We investigate the effect of active galactic nucleus (AGN) variability on the observed connection between star formation and black hole accretion in extragalactic surveys. Recent s…
Narrow-line region gas kinematics of 24,264 optically-selected AGN: the radio connection
J. R. Mullaney, D. M. Alexander, S. Fine +3
Using a sample of 24264 optically selected AGNs from the SDSS DR7 database, we characterise how the profile of the [OIII] emission line relates to bolometric luminosity (L_Bol), Ed…
The Link Between the Hidden Broad Line Region and the Accretion Rate in Seyfert 2 Galaxies
Andrea Marinucci, Stefano Bianchi, Fabrizio Nicastro +2
In the past few years more and more pieces of evidence have been presented for a revision of the widely accepted Unified Model of Active Galactic Nuclei. A model based solely on or…
X-ray Spectral Constraints for z~2 Massive Galaxies: The Identification of Reflection-Dominated Active Galactic Nuclei
D. M. Alexander, F. E. Bauer, W. N. Brandt +18
We use the 4Ms CDF-S survey to place direct X-ray constraints on the ubiquity of z~2 heavily obscured AGNs in K<22 BzK galaxies. Forty seven of the 222 BzK galaxies in the central…
Defining the intrinsic AGN infrared spectral energy distribution and measuring its contribution to the infrared output of composite galaxies
J. R. Mullaney, D. M. Alexander, A. D. Goulding +1
We use infrared spectroscopy and photometry to empirically define the intrinsic, thermal infrared spectral energy distribution (i.e., 6-100 um SED) of typical active galactic nucle…
Searching for Compton-thick active galactic nuclei at z~0.1
Andy Goulding, David Alexander, James Mullaney +4
Using a suite of X-ray, mid-IR and optical active galactic nuclei (AGN) luminosity indicators, we search for Compton-thick (CT) AGNs with intrinsic L_X>10^42erg/s at z~0.03-0.2, a…
A Chandra Perspective On Galaxy-Wide X-ray Binary Emission And Its Correlation With Star Formation Rate And Stellar Mass: New Results From Luminous Infrared Galaxies
B. D. Lehmer, D. M. Alexander, F. E. Bauer +5
We present new Chandra observations that complete a sample of seventeen (17) luminous infrared galaxies (LIRGs) with D < 60 Mpc and low Galactic column densities of N_H < 5 X 10^20…
Characterising the Far-infrared Properties of Distant X-ray Detected AGNs: Evidence for Evolution in the Infrared--X-ray Luminosity Ratio
J. R. Mullaney, D. M. Alexander, M. Huynh +2
(Abridged) We investigate the far-infrared properties of X-ray sources detected in the Chandra Deep Field-South (CDF-S) survey using the ultra-deep 70um and 24um Spitzer observatio…
Towards a Complete Census of AGNs in Nearby Galaxies: A Large Population of Optically Unidentified AGNs
Andy Goulding, Dave Alexander
Using Spitzer-IRS spectroscopy, we investigate the ubiquity of Active Galactic Nuclei (AGN) in a complete (~94%), volume-limited sample of the most bolometrically-luminous galaxies…