28 citations · 71 across the 6 of their papers we have counts for
6 papers
Non-detection of Broad Hydrogen Radio Recombination Lines in Circinus Galaxy
Junzhi Wang, Yong Shi, Zhi-Yu Zhang +5
The line widths of broad line regions (BLRs) of AGNs are key parameters for understanding the central super massive black holes (SMBHs). However, due to obscuration from dusty toru…
Molecules in the carbon-rich protoplanetary nebula CRL 2688
Jian-Jie Qiu, Yong Zhang, Jiang-Shui Zhang +1
We present observations of the carbon-rich protoplanetary nebula (PPN) CRL 2688 made with the Institut de Radioastronomie Millimetrique (IRAM) 30 m telescope in the 3mm and 2mm ban…
Molecular Oxygen in the nearest QSO Mrk 231
Junzhi Wang, Di Li, Paul F. Goldsmith +7
We report the detection of an emission feature at the 12 sigma level with FWHM line width of about 450 km/s toward the nearest quasi-stellar object, QSO Mrk 231. Based on observati…
λ = 2 mm spectroscopy observations toward the circumnuclear disk of NGC 1068
Jianjie Qiu, Jiangshui Zhang, Yong Zhang +2
Aims. We investigate the physical and chemical conditions of molecular gas in the circumnuclear disk (CND) region of NGC 1068. Methods. We carried out a spectral line survey with t…
Mapping Observations of complex organic molecules around Sagittarius B2 with ARO 12m telescope
Juan Li, Junzhi Wang, Haihua Qiao +10
We performed high-sensitivity mapping observations of several complex organic molecules around Sagittarius B2 with ARO 12m telescope at 3-mm wavelength. Based on their spatial dist…
Determining electron temperature and density in a H II region by using the relative strengths of hydrogen radio recombination lines
F. -Y. Zhu, Q. -F. Zhu, J. -Z. Wang +1
We have introduced a new method of estimating the electron temperature and density of H II regions by using single dish observations. In this method, multiple hydrogen radio recomb…