5 papers
Multicolor Photometric Observations of Optical Candidates to Faint ROSAT X-ray Sources in a 1 deg field of the BATC Survey
Haotong Zhang, Suijian Xue, David Burstein +6
We present optical candidates for 75 X-ray sources in a deg overlapping region with the medium deep ROSAT survey. These candidates are selected using the multi-color C…
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 ,…
Ring structure and warp of NGC5907 -- Interaction with dwarf galaxies
Zhaohui Shang, Zhongyuan Zheng, Elias Brinks +22
The edge-on, nearby spiral galaxy NGC5907 has long been used as the prototype of a ``non-interacting'' warped galaxy. We report here the discovery of two interactions with companio…
Self-Microlensing in Compact Binary Systems
Bo Qin, Xiang-Ping Wu, Zhenlong Zou
The signature of the self-microlensing in compact binaries (white dwarfs, neutron stars and black holes) is a flare with the characteristic time of typically a few minutes. The pro…
On the measurement of the Hubble constant in a local low-density universe
Xiang-Ping Wu, Zugan Deng, Zhenlong Zou +2
Astrophysical observations indicate that the ``Local Universe" has a relatively lower matter density () than the predictions of the standard inflation cosmology and the large-…