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16 papers · 2 filters
Relation between radio core length and black hole mass for active galactic nuclei
Xinwu Cao, D. R. Jiang
We explore the relation between the linear length of radio core and the central black hole mass for a sample of radio-loud active galactic nuclei (AGNs). An empirical relation betw…
Intermediate-band Surface Photometry of the Edge-on Galaxy: NGC 4565
Hong Wu, Dave Burstein, Zugan Deng
We present a deep, 42.79 hr image of the nearby, edge-on galaxy NGC 4565 in the Beijing-Arizona-Taipei-Connecticut (BATC) 6660A band using the large-format CCD system on the 0.6m S…
Determination of proper motions and membership of the open star cluster NGC2548
Z. Y. Wu, K. P. Tian, L. Balaguer-Nunez +3
Absolute proper motions, their corresponding errors and membership probabilities of 501 stars in the intermediate-age open cluster NGC2548 region are determined from MAMA measureme…
Instability of an accretion disk with a magnetically driven wind
Xinwu Cao, H. C. Spruit
We present a linear analysis of the stability of accretion disks in which angular momentum is removed by the magnetic torque exerted by a centrifugally driven wind. The effects of…
The Fundamental Plane of Spiral Galaxies: Search from Observational Data
J. L. Han, Z. G. Deng, Z. L. Zou +2
The fundamental plane of spiral galaxies was searched from observational data, which can be approximately represented in observational parameters by , where ,…
The Fundamental Plane of Spiral Galaxies: Theoretical Expectations
Shiyin Shen, H. J. Mo, Chenggang Shu
Current theory of disk galaxy formation is used to study fundamental-plane (FP) type of relations for disk galaxies. We examine how the changes in model parameters affect these rel…