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18 papers · 2 filters
No evidence for a different accretion mode for all 3CR FR I radio galaxies
Xinwu Cao, Steve Rawlings
We have analyzed the optical and radio properties of a sample of 3CR FR I radio galaxies which have Hubble Space Telescope imaging capable of detecting optical cores. The jet power…
The Three-point Correlation Function of Galaxies Determined from the 2dF Galaxy Redshift Survey
Y. P. Jing, G. Boerner
In a detailed analysis of the three point correlation function (3PCF) for the 2dF Galaxy Redshift Survey we have accurately measured the 3PCF for galaxies of different luminosity.…
Black hole masses and Doppler factors of -ray active galactic nuclei
Zhong-Hui Fan, Xinwu Cao
The sizes of the broad-line regions (BLRs) in -ray active galactic nuclei (AGNs) are estimated from their optical continuum luminosity by using the empirical relation between $R…
Physical properties of DLA metallicity and neutral hydrogen column density
J. L. Hou, C. G. Shu, W. P. Chen +2
We investigate some basic properties of Damped Lyman alpha systems based on the Semi-Analytical model of disk galaxy formation theory. We derive the DLA metallicity, column density…
Galactic metallicity distribution from open clusters
L. Chen, J. L. Hou, J. J. Wang
We have compiled two new Galactic open cluster catalogues. The first one has 119 objects with age, distance and metallicity data, while the second one has 144 objects with both abs…
The Dependence of the Galaxy Luminosity Function on Large-Scale Environment
H. J. Mo, Xiaohu Yang, Frank C. van den Bosch +1
A basic assumption in current halo occupation model is that the properties of a galaxy depend only on the mass of its dark matter halo. An important consequence of this is that the…