112 citations · 312 across the 20 of their papers we have counts for
21 papers
Constrain the Size of Broad Line Region in NGC 1068 Using Sub-millimeter Excess
Qi Guo, Junzhi Wang, Lingrui Lin +3
Constraining the size of broad-line region (BLR) close to the accretion disk in active galactic nuclei (AGNs) is key to understand the central engine and evolution of AGN. We propo…
Spectuner-D1: Spectral Line Fitting of Interstellar Molecules Using Deep Reinforcement Learning
Yisheng Qiu, Tianwei Zhang, Tie Liu +6
Spectral lines from interstellar molecules provide crucial insights into the physical and chemical conditions of the interstellar medium. Traditional spectral line analysis relies…
Widespread Hot Molecular Gas Heated by Shear-induced Turbulence in the Galactic Center
Juan Li, Junzhi Wang, Zhiqiang Shen +13
We observed NH3 metastable inversion lines from (3, 3) to (18, 18) toward G0.66-0.13 in the Galactic center with the Shanghai Tianma 65m radio telescope and Yebes 40 m telescope. H…
An nl-model with a full radiative transfer treatment for level populations of hydrogen atoms in a spherically symmetric H II region
F. -Y. Zhu, J. Wang, Y. Qiu +2
Context. The radiation field consisting of hydrogen recombination lines and continuum emission might significantly affect the hydrogen-level populations in ultra- and hypercompact…
ATOMS: ALMA Three-millimeter Observations of massive Star-forming regions -XX. Probability distribution function of integrated intensity for dense molecular gas tracers
C. Zhang, Tie Liu, Sihan Jiao +16
We report the observations of J=1-0 of HCN, HCO+, H13CO+, and H13CN, HC3N (J=11-10) emission towards 135 massive star-forming clumps, as part of the ATOMS (ALMA Three-millimeter Ob…
The first Ka-band (26.1-35 GHz) blind line survey towards Orion KL
Xunchuan Liu, Tie Liu, Zhiqiang Shen +30
We conducted a Ka-band (26.1--35 GHz) line survey towards Orion KL using the TianMa 65-m Radio Telescope (TMRT). It is the first blind line survey in the Ka band, and achieves a se…
Origins of the shocks in high-mass starless clump candidates
Feng-Yao Zhu, Junzhi Wang, Yaoting Yan +2
Shocks are abundant in star-forming regions, and are often related with star formation. In our previous observations toward 100 starless clump candidates (SCCs) in the Galaxy, a sa…
Spatial distributions and kinematics of shocked and ionized gas in M17
Feng-Yao Zhu, Junzhi Wang, Yaoting Yan +2
Massive stars are formed in molecular clouds, and produce H II regions when they evolve onto the main sequence. The expansion of H II region can both suppress and promote star form…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -XIV. Properties of resolved UC Hii regions
C. Zhang, Feng-Yao Zhu, Tie Liu +15
Hydrogen recombination lines (RRLs) are one of the major diagnostics of the physical properties of H{\sc ii} regions. We use RRL H40, He40 and 3 mm continuum emission to inve…
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…
A Q-band line survey towards Orion KL using the Tianma radio telescope
Xunchuan Liu, Tie Liu, Zhiqiang Shen +28
We have conducted a line survey towards Orion KL using the Q-band receiver of Tianma 65 m radio telescope (TMRT), covering 34.8--50 GHz with a velocity resolution between 0.79 km s…
Inverted level populations of hydrogen atoms in ionized gas
Feng-Yao Zhu, Junzhi Wang, Qing-Feng Zhu +1
Context. Level population inversion of hydrogen atoms in ionized gas may lead to stimulated emission of hydrogen recombination lines, and the level populations can in turn be affec…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- IV. Radio Recombination Lines and evolution of star formation efficiencies
C. Zhang, Neal J. Evans, T. Liu +11
We report detection of radio recombination line (RRL) H toward 75 sources, with data obtained from ACA observations in the ATOMS survey of 146 active Galactic star forming…
ATOMS:ALMA Three-millimeter Observations of Massive Star-forming regions -- III :Catalogues of candidate hot molecular cores and Hyper/Ultra compact HII regions
Hong-Li Liu, Tie Liu, Neal J. Evans +50
We have identified 453 compact dense cores in 3 mm continuum emission maps in the ATOMS (ALMA Three-millimeter Observations of Massive Star-forming regions) survey, and compiled th…
Multiple HCN line observations towards 19 Galactic massive star-forming regions
Huanxue Feng, Junzhi Wang, Shanghuo Li +5
We performed observations of the HCN (24-23, 17-16, 11-10, 8-7) lines towards a sample consisting of 19 Galactic massive star-forming regions with the Arizona Radio Observatory…
Searching for shocks in high-mass starless clump candidates
Feng-Yao Zhu, Jun-Zhi Wang, Tie Liu +3
In order to search for shocks in the very early stage of star formation, we performed single-point surveys of SiO J=1-0, 2-1 and 3-2 lines and the HCO line towa…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- I. Survey description and a first look at G9.62+0.19
Tie Liu, Neal J. Evans, Kee-Tae Kim +41
The "ATOMS," standing for {\it ALMA Three-millimeter Observations of Massive Star-forming regions}, survey has observed 146 active star forming regions with ALMA Band 3, aiming to…
ATOMS: ALMA Three-millimeter Observations of Massive Star-forming regions -- II. Compact objects in ACA observations and star formation scaling relations
Tie Liu, Neal J. Evans, Kee-Tae Kim +40
We report studies of the relationships between the total bolometric luminosity ( or ) and the molecular line luminosities of transitions of H$^{13…
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…
The hydrodynamical models of the cometary compact H II region
Feng-Yao Zhu, Qing-Feng Zhu, Juan Li +2
We have developed a full numerical method to study the gas dynamics of cometary ultra-compact (UC) H II regions, and associated photodissociation regions (PDRs). The bow-shock and…
Line Profile studies of Hydrodynamical Models of Cometary Compact H II Regions
Feng-Yao Zhu, Qing-Feng Zhu
We simulate evolution of cometary H II regions based on several champagne flow models and bow shock models, and calculate the profiles of the [Ne II] fine-structure line at $12.81μ…