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CO(1-0) in z gtrsim 4 Quasar Host Galaxies: No Evidence for Extended Molecular Gas Reservoirs
formation high-redshift
2014/12/24
We present 12CO(J = 1 → 0) observations of the high-redshift quasi-stellar objects (QSOs) BR 1202-0725 (z = 4.69), PSS J2322+1944 (z = 4.12), and APM 08279+5255 (z = 3.91) using the NRAO Green Bank Te...
Far-infrared and Molecular CO Emission From the Host Galaxies of Faint Quasars at z~6
Far-infrared Molecular CO Emission Host Galaxies Faint Quasars
2011/10/21
We present new millimeter and radio observations of nine z~6 quasars discovered in deep optical and near-infrared surveys. We observed the 250 GHz continuum in eight of the nine objects and detected t...
Using HST observations of 147 host galaxies of low-mass black holes (BHs), we systematically study the structures and scaling relations of these active galaxies. Our sample is selected to have central...
The host galaxies and black-hole:galaxy mass ratios of luminous quasars at z~4
galaxies: active – galaxies: fundamental parameters – galaxies: high-redshift –galaxies: photometry – infrared: galaxies – quasars: general
2011/10/8
We present and analyse the deepest, high-quality Ks-band images ever obtained of luminous quasars at z~4, in an attempt to determine the basic properties of their host galaxies less than 1 Gyr after t...
The Properties of Type Ia Supernova Host Galaxies from the Sloan Digital Sky Survey
galaxies fundamental parameters — galaxies statistics — supernovae general
2010/11/12
We investigate the properties and environments of Type Ia Supernova (SN Ia) host galaxies in
the Stripe 82 of the Sloan Digital Sky Survey-II Supernova Survey centered on the celestial equator.Host g...
The missing gas problem in GRB host galaxies: evidence for a highly ionised component
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
There is considerable discrepancy between the amount of X-ray absorption and that inferred from optical (rest frame UV) as measured along gamma-ray burst (GRB) sight lines, with the former being typic...
The stellar content of low redshift BL Lac host galaxies from multicolour imaging
stellar content host galaxies low redshift
2009/7/9
The stellar content of low redshift BL Lac host galaxies from multicolour imaging。
Case Studies of Interacting QSO Host Galaxies。
The study of gamma-ray bursts and their host galaxies in the GTC era
gamma-ray bursts host galaxies GTC era
2009/6/12
The study of gamma-ray bursts and their host galaxies in the GTC era。
Preliminary Results on VLT K-band Imaging Observations of GRB Host Galaxies
evolution high-redshift Gamma-ray Bursts
2009/5/19
We have obtained K-band imaging observations of Gamma-
Ray Burst (GRB) host galaxies with the near-infrared spectro-imager
ISAAC installed on the Very Large Telescope at Paranal (Chile). The
derive...