A CONSTRAINT ON QUASAR CLUSTERING ATz= 5 FROM A BINARY QUASAR
نویسندگان
چکیده
منابع مشابه
An FeLoBAL Binary Quasar
In an ongoing infrared imaging survey of quasars at Keck Observatory, we have discovered that the z = 1.285 quasar SDSS J233646.2-010732.6 comprises two point sources with a separation of 1. 67. Resolved spectra show that one component is a standard quasar with a blue continuum and broad emission lines; the other is a broad absorption line (BAL) quasar, specifically, a BAL QSO with prominent ab...
متن کاملLBQS 1429-0053: a binary quasar rather than a lensed quasar
Very deep ESO/VLT FORS1 and ISAAC images, as well as HST NICMOS2 data are used to infer the nature of the quasar pair LBQS 1429-0053 A and B, either a binary quasar or a doubly-imaged lensed quasar. Direct search of a putative lensing galaxy is unsuccessful down to R=27, J=24, Ks=22.5 and H=22.5. Moreover, no galaxy overdensity close to the quasar pair is found. A weak shear analysis of the FOR...
متن کاملQuasar Clustering from Sdss Dr5: Dependences on Physical Properties
Using a homogenous sample of 38,208 quasars with a sky coverage of ∼ 4000deg2 drawn from the SDSS Data Release Five quasar catalog, we study the dependence of quasar clustering on luminosity, virial black hole mass, quasar color, and radio loudness. At z < 2.5, quasar clustering depends weakly on luminosity and virial black hole mass, with typical uncertainty levels ∼ 10% for the measured corre...
متن کاملOn Quasar Masses and Quasar Host Galaxies
The mass of massive black holes in quasar cores can be deduced using the typical velocities of Hβ-emitting clouds in the Broad Line Region (BLR) and the size of this region. However, this estimate depends on various assumptions and is susceptible to large systematic errors. The Hβ-deduced black hole mass in a sample of 14 bright quasars is found here to correlate with the quasar host galaxy lum...
متن کاملLBQS 0103 − 2753 : A 0 . 3 Arcsec Binary Quasar
Imaging and spectroscopy with HST show that LBQS 0103−2753 (V = 17.8, z = 0.848) is a binary quasar with a separation of 0 .3 or 2.3 kpc. This is by far the smallest separation binary quasar reported to date. The two components have very different spectra, including the presence of strong broad absorption lines (BALs) in component A only. The emission-line redshifts, based on the broad high ion...
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: The Astronomical Journal
سال: 2016
ISSN: 1538-3881
DOI: 10.3847/0004-6256/151/3/61