THE COSMOS ACTIVE GALACTIC NUCLEUS SPECTROSCOPIC SURVEY. I.XMM-NEWTONCOUNTERPARTS

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Infrared Spectroscopic Diagnostics for Active Galactic Nuclei

Infrared spectroscopy in the midand far-infrared provides powerful diagnostics for studying the emission regions in active galaxies. The large variety of ionic fine structure lines can probe gas conditions in a variety of physical conditions, from highly ionized gas excited by photons originated by black hole accretion to gas photoionized by young stellar systems. The critical density and the i...

متن کامل

NGC 4151 – A unified active galactic nucleus

We present a unified picture of active galactic nuclei which we construct from a detailed model of line emission in the active source in NGC 4151. This source provides us with an opportunity to explore the variation of structure with luminosity in an object which, in the model, derives its unusual properties as a consequence of the angle of the accretion disc to the line of sight. The key featu...

متن کامل

AN X-RAY–SELECTED ACTIVE GALACTIC NUCLEUS AT z = 4.6 DISCOVERED BY THE CYDER SURVEY

We present the discovery of a high-redshift, X-ray–selected active galactic nucleus (AGN) by the Calan-Yale Deep Extragalactic Research (CYDER) survey: CXOCY J033716.7 050153, located at z 1⁄4 4:61, the second high-redshift AGN discovered by this survey. Here we present its optical, near-IR, and X-ray properties and compare it with other optical and X-ray–selected high-redshift AGNs. The optica...

متن کامل

On radio-bright Active Galactic Nuclei in a complete Spectroscopic Redshift Survey

Analysis of the frequency and physical properties of galaxies with starformation and AGN activity in different environments in the local universe is a cornerstone for understanding structure formation and galaxy evolution. We have built a new multiwavelength catalog for galaxies in a complete redshift survey (the 15R Survey), gathering information on their Hα, R-band, radio, far-infrared, and X...

متن کامل

Active Galactic Nucleus Emission-line Properties versus the Eddington Ratio

We analyze UV spectra for a large sample of 578 type 1 active galactic nuclei and derive Eddington ratios, L=LEdd, from the bolometric luminosities and emission-line widths for each object in the sample. The sample spans 5 orders of magnitude in supermassive black hole (SMBH) mass, 7 orders of magnitude in luminosity, and a redshift range 0 z 5. We include a sample of 26 low-redshift narrow-lin...

متن کامل

ذخیره 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: The Astrophysical Journal

سال: 2009

ISSN: 0004-637X,1538-4357

DOI: 10.1088/0004-637x/696/2/1195