Search Results - "Laird, E. S"

The evolution of the hard X-ray luminosity function of AGN by Aird, J., Nandra, K., Laird, E. S., Georgakakis, A., Ashby, M. L. N., Barmby, P., Coil, A. L., Huang, J.-S., Koekemoer, A. M., Steidel, C. C., Willmer, C. N. A.

“…We present new observational determinations of the evolution of the 2–10 keV X-ray luminosity function (XLF) of active galactic nuclei (AGN). We utilize data…”
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A new method for determining the sensitivity of X-ray imaging observations and the X-ray number counts by Georgakakis, A., Nandra, K., Laird, E. S., Aird, J., Trichas, M.

“…We present a new method for determining the sensitivity of X-ray imaging observations, which correctly accounts for the observational biases that affect the…”
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Host galaxy morphologies of X-ray selected AGN: assessing the significance of different black hole fuelling mechanisms to the accretion density of the Universe at z∼ 1 by Georgakakis, A., Coil, A. L., Laird, E. S., Griffith, R. L., Nandra, K., Lotz, J. M., Pierce, C. M., Cooper, M. C., Newman, J. A., Koekemoer, A. M.

“…We use morphological information of X-ray selected active galactic nuclei (AGN) hosts to set limits on the fraction of the accretion density of the Universe at…”
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AEGIS: The Color-Magnitude Relation for X-Ray-selected Active Galactic Nuclei by Nandra, K, Georgakakis, A, Willmer, C. N. A, Cooper, M. C, Croton, D. J, Davis, M, Faber, S. M, Koo, D. C, Laird, E. S, Newman, J. A

“…We discuss the relationship between rest-frame color and optical luminosity for X-ray sources in the range 0.6< z <1.4 selected from the Chandra survey of the…”
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Measuring the dark matter halo mass of X-ray AGN at z ∼ 1 using photometric redshifts by Mountrichas, G., Georgakakis, A., Finoguenov, A., Erfanianfar, G., Cooper, M. C., Coil, A. L., Laird, E. S., Nandra, K., Newman, J. A.

“…Data from the All Wavelength Extended Groth strip International Survey (AEGIS), Cosmological evolution Survey (COSMOS) and Extended Chandra Deep Field-South…”
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Excess AGN activity in the z= 2.30 Protocluster in HS 1700+64 by Digby-North, J. A., Nandra, K., Laird, E. S., Steidel, C. C., Georgakakis, A., Bogosavljević, M., Erb, D. K., Shapley, A. E., Reddy, N. A., Aird, J.

“…We present the results of spectroscopic, narrow-band and X-ray observations of a z= 2.30 protocluster in the field of the QSO HS 1700+643. Using a sample of…”
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Evidence for two modes of black hole accretion in massive galaxies at z∼2 by Rangel, C., Nandra, K., Barro, G., Brightman, M., Hsu, L., Salvato, M., Koekemoer, A. M., Brusa, M., Laird, E. S., Trump, J. R., Croton, D. J., Koo, D. C., Kocevski, D., Donley, J. L., Hathi, N. P., Peth, M., Faber, S. M., Mozena, M., Grogin, N. A., Ferguson, H. C., Lai, K.

“…We investigate the relationship between active galactic nucleus (AGN) activity and host galaxy properties using a sample of massive galaxies at z ∼ 2 in the…”
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The role of AGN in the colour transformation of galaxies at redshifts z≈ 1 by Georgakakis, A., Nandra, K., Yan, R., Willner, S. P., Lotz, J. M., Pierce, C. M., Cooper, M. C., Laird, E. S., Koo, D. C., Barmby, P., Newman, J. A., Primack, J. R., Coil, A. L.

“…We explore the role of active galactic nuclei (AGN) in establishing and/or maintaining the bimodal colour distribution of galaxies by quenching their star…”
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Mid-Infrared Properties of X-Ray Sources in the Extended Groth Strip by Barmby, P, Alonso-Herrero, A, Donley, J. L, Egami, E, Fazio, G. G, Georgakakis, A, Huang, J.-S, Laird, E. S, Miyazaki, S, Nandra, K, Park, S. Q, Pérez-González, P. G, Rieke, G. H, Rigby, J. R, Willner, S. P

“…Mid-infrared observations of active galactic nuclei (AGNs) are important for understanding the physical conditions around the central accretion engines…”
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AEGIS: Host Galaxy Morphologies of X-Ray-selected and Infrared-selected Active Galactic Nuclei at 0.2 ≤ z < 1.2 by Pierce, C. M, Lotz, J. M, Laird, E. S, Lin, L, Nandra, K, Primack, J. R, Faber, S. M, Barmby, P, Park, S. Q, Willner, S. P, Gwyn, S, Koo, D. C, Coil, A. L, Cooper, M. C, Georgakakis, A, Koekemoer, A. M, Noeske, K. G, Weiner, B. J, Willmer, C. N. A

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A deep Chandra survey of the Groth Strip – I. The X-ray data by Nandra, K., Laird, E. S., Adelberger, K., Gardner, Jonathan P., Mushotzky, R. F., Rhodes, J., Steidel, C. C., Teplitz, H. I., Arnaud, K. A.

“…We present the results of a 200-ks Chandra observation of part of the Groth Strip region, using the ACIS-I instrument. We present a relatively simple method…”
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AEGIS: Radio and Mid-Infrared Selection of Obscured AGN Candidates by Park, S. Q, Barmby, P, Fazio, G. G, Nandra, K, Laird, E. S, Georgakakis, A, Rosario, D, Willner, S. P, Rieke, G. H, Ashby, M. L. N, Ivison, R. J, Coil, A. L, Miyazaki, S

“…The application of multiwavelength selection techniques is crucial for discovering a complete and unbiased set of active galactic nuclei (AGNs). Here, we…”
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The X-ray emission of Lyman break galaxies by Laird, E. S., Nandra, K., Hobbs, A., Steidel, C. C.

“…We present an analysis of the X-ray emission of a large sample of z∼ 3 Lyman break galaxies (LBGs), based on Chandra/ACIS observations of several LBG survey…”
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The X-ray luminosity function of AGN at z∼ 3 by Aird, J., Nandra, K., Georgakakis, A., Laird, E. S., Steidel, C. C., Sharon, C.

“…We combine Lyman-break colour selection with ultradeep (≳200 ks) Chandra X-ray imaging over a survey area of ∼0.35 deg2 to select high-redshift active galactic…”
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X-ray selected AGN in groups at redshifts z≈ 1 by Georgakakis, A., Gerke, Brian F., Nandra, K., Laird, E. S., Coil, A. L., Cooper, M. C., Newman, J. A.

“…We explore the role of the group environment in the evolution of active galactic nuclei (AGN) at the redshift interval 0.7 < z < 1.4, by combining deep Chandra…”
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The effects of an active galactic nucleus on host galaxy colour and morphology measurements by Pierce, C. M., Lotz, J. M., Primack, J. R., Rosario, D. J. V., Griffith, R. L., Conselice, C. J., Faber, S. M., Koo, D. C., Coil, A. L., Salim, S., Koekemoer, A. M., Laird, E. S., Ivison, R. J., Yan, R.

“…We assess the effects of simulated active galactic nuclei (AGN) on the colour and morphology measurements of their host galaxies. To test the morphology…”
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The central energy source of 70 μm-selected galaxies: starburst or AGN? by Symeonidis, M., Rosario, D., Georgakakis, A., Harker, J., Laird, E. S., Page, M. J., Willmer, C. N. A.

“…We present the first active galactic nuclei (AGN) census in a sample of 61 galaxies selected at 70 μm, a wavelength which should strongly favour the detection…”
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AEGIS: The Environment of X-Ray Sources at z 1 by Georgakakis, A, Nandra, K, Laird, E. S, Cooper, M. C, Gerke, B. F, Newman, J. A, Croton, D. J, Davis, M, Faber, S. M, Coil, A. L

“…We explore the environment of z - 1 AGNs using a sample of 53 spectroscopically identified X-ray sources in the All-Wavelength Extended Groth Strip…”
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X-ray properties of UV-selected star-forming galaxies at z∼ 1 in the Hubble Deep Field North by Laird, E. S., Nandra, K., Adelberger, K. L., Steidel, C. C., Reddy, N. A.

“…We present an analysis of the X-ray emission from a large sample of ultraviolet (UV) selected, star-forming galaxies with 0.74 < z < 1.32 in the Hubble Deep…”
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A statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys by Brightman, M., Silverman, J. D., Mainieri, V., Ueda, Y., Schramm, M., Matsuoka, K., Nagao, T., Steinhardt, C., Kartaltepe, J., Sanders, D. B., Treister, E., Shemmer, O., Brandt, W. N., Brusa, M., Comastri, A., Ho, L. C., Lanzuisi, G., Lusso, E., Nandra, K., Salvato, M., Zamorani, G., Akiyama, M., Alexander, D. M., Bongiorno, A., Capak, P., Civano, F., Del Moro, A., Doi, A., Elvis, M., Hasinger, G., Laird, E. S., Masters, D., Mignoli, M., Ohta, K., Schawinski, K., Taniguchi, Y.

“…We present an investigation into how well the properties of the accretion flow on to a supermassive black hole may be coupled to those of the overlying hot…”
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