Zobrazeno 71 - 80
of 6 792
pro vyhledávání: '"Laird, E. A."'
Autor:
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.
We visually and quantitatively determine the host galaxy morphologies of 94 intermediate redshift (0.2 < z < 1.2) active galactic nuclei (AGN), selected using Chandra X-ray and Spitzer mid-infrared data in the Extended Groth Strip. Using recently dev
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608381
Autor:
Davis, M., Guhathakurta, P., Konidaris, N., Newman, J. A., Ashby, M. L. N., Biggs, A. D., Barmby, P., Bundy, K., Chapman, S., Coil, A. L., Conselice, C., Cooper, M., Croton, D., Eisenhardt, P., Ellis, R., Faber, S., Fang, T., Fazio, G. G., Georgakakis, A., Gerke, B., Goss, W. M., Gwyn, S., Harker, J., Hopkins, A., Huang, J. -S., Ivison, R. J., Kassin, S. A., Kirby, E., Koekemoer, A., Koo, D. C., Laird, E., Floc'h, E. Le, Lin, L., Lotz, J., Marshall, P. J., Martin, D. C., Metevier, A., Moustakas, L. A., Nandra, K., Noeske, K., Papovich, C., Phillips, A. C., Rich, R. M., Rieke, G. H., Rigopoulou, D., Salim, S., Schiminovich, D., Simard, L., Smail, I., Small, T. A., Weiner, B., Willmer, C. N. A., Willner, S. P., Wilson, G., Wright, E., Yan, R.
Publikováno v:
Astrophys.J.660:L1-L6,2007
In this the first of a series of Letters, we present a description of the panchromatic data sets that have been acquired in the Extended Groth Strip region of the sky. Our survey, the All-wavelength Extended Groth strip International Survey (AEGIS),
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607355
Autor:
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 AGN using a sample of 53 spectroscopically identified X-ray sources in the All-wavelength Extended Groth strip International Survey. We quantify the local density in the vicinity of an X-ray source by measuring the p
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607274
Autor:
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
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607270
Autor:
Georgakakis, A., Nandra, K ., Laird, E. S., Gwyn, S., Steidel, C. C., Sarajedini, V. L., Barmby, P., Faber, S. M., Coil, A. L., Cooper, M. C., Davis, M., Newman, J. A.
Publikováno v:
Mon.Not.Roy.Astron.Soc.371:221-234,2006
We discuss the optical and X-ray spectral properties of the sources detected in a single 200ks Chandra pointing in the Groth-Westphal Strip region. Optical identifications and spectroscopic redshifts are primarily from the DEEP2 survey. This is compl
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606139
Autor:
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., Perez-Gonzalez, P. G., Rieke, G. H., Rigby, J. R., Willner, S. P.
Publikováno v:
Astrophys.J.642:126-139,2006
Mid-infrared observations of Active Galactic Nuclei (AGN) are important for understanding of the physical conditions around the central accretion engines. Chandra and XMM-Newton X-ray observations of a 300 arcmin^2 region in the Extended Groth Strip
Externí odkaz:
http://arxiv.org/abs/astro-ph/0512618
Autor:
Laird, E. A., Petta, J. R., Johnson, A. C., Marcus, C. M., Yacoby, A., Hanson, M. P., Gossard, A. C.
Publikováno v:
Phys. Rev. Lett. 97, 056801 (2006).
We measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much larger than the hyperfine energy. Saturation of dephasing and damped oscill
Externí odkaz:
http://arxiv.org/abs/cond-mat/0512077
We present an estimate of the space density of Active Galactic Nuclei (AGN) at z=3. Combining deep X-ray data with Lyman Break Galaxy (LBG) colour-selection in the rest-frame UV makes for highly efficient identification of AGN in a narrow redshift ra
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503490
Publikováno v:
Mon.Not.Roy.Astron.Soc.359:47-56,2005
We present an analysis of the X-ray emission from a large sample of ultraviolet (UV) selected, star forming galaxies with 0.74
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501411
Autor:
Nandra, K., Laird, E. S., Adelberger, K., Gardner, J. P., Mushotzky, R. F., Rhodes, J., Steidel, C. C., Teplitz, H. I., Arnaud, K. A.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 356 (2005) 568-586
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 for the detection of point-sources and calculation of limiting sensitivities, which we argue
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410149