Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Storrie-Lombardi, Lisa J."'
Autor:
Lacy, Mark, Ridgway, Susan E., Sajina, Anna, Petric, Andreea O., Gates, Elinor L., Urrutia, Tanya, Storrie-Lombardi, Lisa J.
We present luminosity functions derived from a spectroscopic survey of AGN selected from Spitzer Space Telescope imaging surveys. Selection in the mid-infrared is significantly less affected by dust obscuration. We can thus compare the luminosity fun
Externí odkaz:
http://arxiv.org/abs/1501.04118
Autor:
Richards, Gordon T., Deo, Rajesh P., Lacy, Mark, Myers, Adam D., Nichol, Robert C., Zakamska, Nadia L., Brunner, Robert J., Brandt, W. N., Gray, Alexander G., Parejko, John K., Ptak, Andrew, Schneider, Donald P., Storrie-Lombardi, Lisa J., Szalay, Alexander S.
Publikováno v:
Astron.J.137:3884,2009
We explore the multidimensional, multiwavelength selection of quasars from mid-IR (MIR) plus optical data, specifically from Spitzer-IRAC and the Sloan Digital Sky Survey (SDSS). We apply modern statistical techniques to combined Spitzer MIR and SDSS
Externí odkaz:
http://arxiv.org/abs/0810.3567
Autor:
Fadda, Dario, Biviano, Andrea, Marleau, Francine R., Storrie-Lombardi, Lisa J., Durret, Florence
We report the first direct detection with Spitzer of galaxy filaments. Using Spitzer and ancillary optical data, we have discovered two filamentary structures in the outskirts of the cluster Abell 1763. Both filaments point toward Abell 1770 which li
Externí odkaz:
http://arxiv.org/abs/0711.2561
Autor:
Richards, Gordon T., Lacy, Mark, Storrie-Lombardi, Lisa J., Hall, Patrick B., Gallagher, S. C., Hines, Dean C., Fan, Xiaohui, Papovich, Casey, Berk, Daniel E. Vanden, Trammell, George B., Schneider, Donald P., Vestergaard, Marianne, York, Donald G., Jester, Sebastian, Anderson, Scott F., Budavari, Tamas, Szalay, Alexander S.
Publikováno v:
Astrophys.J.Suppl.166:470-497,2006
We present an analysis of the mid-infrared (MIR) and optical properties of type 1 (broad-line) quasars detected by the Spitzer Space Telescope. The MIR color-redshift relation is characterized to z=3, with predictions to z=7. We demonstrate how combi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601558
(Abridged) We present R-band images covering more than 11 square degrees of sky obtained with the KPNO 4-m telescope in preparation for the Spitzer Space Telescope First Look Survey. The FLS was designed to characterize the mid-infrared sky at depths
Externí odkaz:
http://arxiv.org/abs/astro-ph/0403490
Imaging and spectroscopy of galaxies associated with two z~0.7 damped Lyman-alpha absorption systems
Autor:
Lacy, Mark, Becker, Robert H., Storrie-Lombardi, Lisa J., Gregg, Michael D., Urrutia, Tanya, White, Richard L.
Publikováno v:
Astron.J.126:2230,2003
We have identified galaxies near two quasars which are at the redshift of damped Lyman-alpha (DLA) systems in the UV spectra of the quasars. Both galaxies are actively forming stars. One galaxy has a luminosity close to the break in the local galaxy
Externí odkaz:
http://arxiv.org/abs/astro-ph/0308193
Publikováno v:
Astrophys.J. 591 (2003) 623
We present results on two related topics: 1. A discussion of high redshift candidates (z>4.5), and 2. A study of very small galaxies at intermediate redshifts, both sets being detected in the region of the northern Hubble Deep Field covered by deep N
Externí odkaz:
http://arxiv.org/abs/astro-ph/0303618
Quasar absorbers provide a powerful observational tool with which to probe both galaxies and the intergalactic medium up to high redshift. We present a study of the evolution of the column density distribution, f(N,z), and total neutral hydrogen mass
Externí odkaz:
http://arxiv.org/abs/astro-ph/0107125
Publikováno v:
Mon.Not.Roy.Astron.Soc. 346 (2003) 1103
We present a study of the evolution of the column density distribution, f(N,z), and total neutral hydrogen mass in high-column density quasar absorbers using candidates from a recent high-redshift survey for damped Lyman-alpha (DLA) and Lyman limit s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0107045
The cosmological evolution of neutral hydrogen is an efficient way of tracing structure formation with redshift. It indicates the rate of evolution of gas into stars and hence the gas consumption and rate star formation history of the Universe. In me
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101212