39 citations · 113 across the 7 of their papers we have counts for
7 papers
The Broad Wing of [O III] λ5007 Emission Line in Active Galactic Nuclei
Zhixin Peng, Yanmei Chen, Qiusheng Gu +1
We use a type 2 AGN sample from SDSS DR7 in which the [O III] λ5007 emission line can be modeled by two Gaussian components, a broad wing plus a narrow core, to investigate the ori…
Serendipitous Discovery of Warm Absorbers in the Seyfert 2 Galaxy IRAS 18325-5926
Shui-Nai Zhang, Qiu-Sheng Gu, Li Ji +1
Warm absorption is a common phenomenon in Seyfert 1s and quasars, but rare in Seyfert 2s. In this paper, we report the detection of warm absorbers with high energy resolution in th…
The quasar SDSS J142507.32+323137.4 : dual AGNs?
Zhixin Peng, Yanmei Chen, Qiusheng Gu +1
We analyze the optical spectrum of type 1 QSO SDSS J1425+3231. This ob- ject is interesting since its narrow emission lines such as [O III]λλ4959, 5007 are double- peaked, and the…
The K-band properties of Seyfert 2 galaxies
ZhiXin Peng, Qiusheng Gu, Jorge Melnick +1
It is well known that the [O {\sc iii}]5007 emission line and hard X-ray(2-10keV) luminosities are good indicators of AGN activities and that the near and mid-infrared emission…
The Circumnuclear Star-forming Activities along the Hubble Sequence
Lei Shi, Qiusheng Gu, Zhixin Peng
In order to study the circumnuclear star-forming activity along the Hubble sequence, we cross-correlate the Sloan Digital Sky Survey Data Release 2 (SDSS DR2) with the Third Refere…
IC 225: a dwarf elliptical galaxy with a peculiar blue core
Qiusheng Gu, Yinghe Zhao, Lei Shi +2
We present the discovery of a peculiar blue core in the elliptical galaxy IC 225 by using images and spectrum from the Sloan Digital Sky Survey (SDSS). The outer parts of the surfa…