348 citations · 384 across the 8 of their papers we have counts for
8 papers
Testing Colour-magnitude Pattern as A Method in the Search for Changing-Look AGNs
Li-tao Zhu, Zhongxiang Wang, P. U. Devanand +6
We develop a simple method to search for changing-look (CL) active galactic nucleus (AGN) candidates, and conduct a test run. In this method, optical variations of AGNs are monitor…
Four Changing-Look Active Galactic Nuclei Found From Optical Variations
Litao Zhu, Jie Li, Zhongxiang Wang +1
We report the finding of four changing-look (CL) active galactic nuclei (AGN). We selected these sources due to their potential as interesting targets when considering their relati…
On the Gamma-Ray Emission of the Andromeda Galaxy M31
Yi Xing, Zhongxiang Wang, Dong Zheng +1
Using the -ray data obtained with the Large Area Telescope (LAT) onboard {\it the Fermi Gamma-ray Space Telescope (Fermi)} for 14 years, we examine the high energy emissio…
Spin transfer from dark matter to gas during halo formation
Jie Li, Danail Obreschkow, Chris Power +1
In the protogalactic density field, diffuse gas and collision-less cold dark matter (DM) are often assumed sufficiently mixed that both components experience identical tidal torque…
AT2021acak: a candidate tidal disruption event found in the Zwicky Transient Facility survey
Jie Li, Zhongxiang Wang, Dong Zheng +3
We report a candidate tidal disruption event (TDE) found in the Zwicky Transient Facility (ZTF) survey data. This candidate, with its transient name AT2021acak, showed brightness i…
Three Cases of Optical Periodic Modulation in Active Galactic Nuclei
Jie Li, Zhongxiang Wang, Dong Zheng
We report on the case of optical periodic modulation discovered in two Active Galactic Nuclei (AGN) and one candidate AGN. Analyzing the archival optical data obtained from large t…
Angular momentum-related probe of cold gas deficiencies
Jie Li, Danail Obreschkow, Claudia Lagos +3
Recent studies of neutral atomic hydrogen (HI) in nearby galaxies found that all field disk galaxies are HI saturated, in that they carry roughly as much HI as permitted before thi…
Asteroseismology of old open clusters with Kepler: direct estimate of the integrated RGB mass loss in NGC6791 and NGC6819
A. Miglio, K. Brogaard, D. Stello +21
Mass loss of red giant branch (RGB) stars is still poorly determined, despite its crucial role in the chemical enrichment of galaxies. Thanks to the recent detection of solar-like…