Heavily reddened quasars atz∼ 2 in the UKIDSS Large Area Survey: a transitional phase in AGN evolution
نویسندگان
چکیده
منابع مشابه
UKIDSS Large Area Survey
We present the initial results from our search for high redshift, z & 6, quasars using near infrared data from the UKIRT Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS). Our analysis of 106 deg of sky from Data Release 1 (DR1) has resulted in the discovery of ULAS J020332.38+001229.2, a luminous (JAB = 20.0, JVega = 19.1, M1450 = −26.2) quasar at z = 5.86. Following candidate selectio...
متن کاملDust Reddened Quasars in First and Ukidss: beyond the Tip of the Iceberg
We present the results of a pilot survey to find dust-reddened quasars by matching the FIRST radio catalog to the UKIDSS near-infrared survey, and using optical data from SDSS to select objects with very red colors. The deep K-band limit provided by UKIDSS allows for finding more heavily-reddened quasars at higher redshifts as compared with previous work using FIRST and 2MASS. We selected 87 ca...
متن کاملCo-Evolution of AGN and Star-Forming Galaxies in the Australia Telescope Large Area Survey
ATLAS (Australia Telescope Large Area Survey) is a wide deep radio survey which is distinguished by its comprehensive multi-wavelength approach. ATLAS is creating a large dataset of radio-selected galaxies for studying the evolution and inter-relationship of star-forming and active galaxies. Although the project is far from complete, we are already starting to answer some of these questions, an...
متن کاملLuminosity and surface brightness distribution of K-band galaxies from the UKIDSS Large Area Survey
We present luminosity and surface-brightness distributions of 40 111 galaxies with K-band photometry from the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS), Data Release 3 and optical photometry from Data Release 5 of the Sloan Digital Sky Survey (SDSS). Various features and limitations of the new UKIDSS data are examined, such as a problem ...
متن کاملLuminous K-band Selected Quasars from UKIDSS
The largest K-band flux-limited sample of luminous quasars to date has been constructed from the UKIDSS Large Area Survey Early Data Release, covering an effective area of 12.8 deg. Exploiting the K-band excess of all quasars with respect to foreground stars, including quasars experiencing dust reddening and objects with non-standard SEDs, a list of targets suitable for spectroscopic follow-up ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2012.22099.x