50 citations · 208 across the 22 of their papers we have counts for
23 papers
ALOHA IRDCs Molecular Line Follow-up: I. Gas properties and kinematics
Jinjin Xie, Yaoting Yan, Zhiyuan Ren +109
Infrared Dark Clouds are ideal sites for investigating the initial conditions of massive star and cluster formation. The A Lei Of the Habitat and Assembly of Infrared Dark Clouds (…
The evolution of C4H and c-C3H2 in molecular cores
Yijia Liu, Junzhi Wang, Ningyu Tang +8
Linear C4H and cyclic c-C3H2, as small unsaturated hydrocarbons, are the key precursors to complex organic molecules and are critical components of the interstellar medium. We pres…
Spatial distribution of C4H and c-C3H2 in cold molecular cores
Yijia Liu, Junzhi Wang, Shu Liu +6
CH and -CH, as unsaturated hydrocarbon molecules, are important for forming large organic molecules in the interstellar medium. We present mapping observations of C$…
Dense Outflowing Molecular Gas in Massive Star-forming Regions
Yani Xu, Junzhi Wang, Shu Liu +6
Dense outflowing gas, traced by transitions of molecules with large dipole moment, is important for understanding mass loss and feedback of massive star formation. HCN 3-2 and HCO$…
Spatial distribution of NH2D in massive star-forming regions
Yuqiang Li, Junzhi Wang, Juan Li +4
To understand the relation between NHD and its physical environment, we mapped ortho-NHD at 85.9 GHz toward 24 Galactic late-stage massive star-forming…
Opacities of dense gas tracers in galactic massive star-forming regions
Shu Liu, Junzhi Wang, Fei Li +5
Optical depths of dense molecular gas are commonly used in Galactic and extragalactic studies to constrain the dense gas mass of the clouds or galaxies. The optical depths are ofte…
Imaging Molecular Outflow in Massive Star-forming Regions with HNCO Lines
Jinjin Xie, Juan Li, Junzhi Wang +8
Protostellar outflows are considered a signpost of star formation. These outflows can cause shocks in the molecular gas and are typically traced by the line wings of certain molecu…
Discovery of a New Molecular Bubble-Outflow Structure in the Taurus B18 Cloud
Yan Duan, Di Li, Paul F. Goldsmith +5
Star formation can produce bubbles and outflows, as a result of stellar feedback. Outflows and bubbles inject momentum and energy into the surrounding interstellar medium, and so a…
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…
Properties of dense molecular gas along the major axis of M 82
Fei Li, Zhi-Yu Zhang, Junzhi Wang +6
Dense gas is important for galaxy evolution and star formation. Optically-thin dense-gas tracers, such as isotopologues of HCN, HCO+, etc., are very helpful to diagnose excitation…
Deuterated ammonia in Galactic massive star-forming regions
Yuqiang Li, Junzhi Wang, Juan Li +2
We present sensitive observations of NH2D at 110.153599 GHz toward 50 Galactic massive star-forming regions with IRAM 30-m telescope. The NH2D transition is detected toward 36 obje…
Spatial distribution of HOCN around Sagittarius B2
Siqi Zheng, Juan Li, Junzhi Wang +4
HOCN and HNCO abundance ratio in molecular gas can tell us the information of their formation mechanism. We performed high-sensitivity mapping observations of HOCN, HNCO, and HNC$^…
Widespread subsonic turbulence in Ophiuchus North 1
Yan Gong, Shu Liu, Junzhi Wang +4
Supersonic motions are common in molecular clouds. (Sub)sonic turbulence is usually detected toward dense cores and filaments. However, it remains unknown whether (sub)sonic motion…
Convergent Filaments Contracting Towards an Intermediate-mass Prestellar Core
Zhiyuan Ren, Lei Zhu, Hui Shi +11
Filamentary structures are closely associated with star-forming cores, but their detailed physical connections are still not clear. We studied the dense gas in the region of OMC-3…
HCN (1-0) opacity of outflowing gas in Arp 220W
Junzhi Wang, Shu Liu, Zhi-Yu Zhang +1
Context. We present our findings for the HCN/H13CN 1-0 line ratio in the molecular outflow of Arp 220 west based on high-resolution ALMA data. Aims. Molecular gas masses in the out…
Dense gas in local galaxies revealed by multiple tracers
Fei Li, Junzhi Wang, Feng Gao +6
We present 3 mm and 2 mm band simultaneously spectroscopic observations of HCN 1-0, HCO 1-0, HNC 1-0, and CS 3-2 with the IRAM 30 meter telescope, toward a sample of 70 sourc…
The Dependence of the Type Ia Supernova Host Bias on Observation or Fitting Technique
Jared Hand, Shu Liu, Lluís Galbany +3
More luminous Type Ia supernovae (SNe Ia) prefer less massive hosts and regions of higher star formation. This correlation is inverted during width-color-luminosity light curve sta…
CO observations toward HI-rich Ultra Diffuse Galaxies
Junzhi Wang, Kai Yang, Zhi-Yu Zhang +5
We present CO observations toward a sample of six HI-rich Ultra-diffuse galaxies (UDGs) as well as one UDG (VLSB-A) in the Virgo Cluster with the IRAM 30-m telescope. CO 1-0 is mar…
Filament Intersections and Cold Dense Cores in Orion A North
Chao Zhang, Zhiyuan Ren, Jingwen Wu +13
We studied the filament structures and dense cores in OMC-2,3 region in Orion A North molecular cloud using the high-resolution N2H+ (1-0) spectral cube observed with the Atacama L…
Are Type Ia Supernovae in Restframe Brighter in More Massive Galaxies?
Kara A. Ponder, W. Michael Wood-Vasey, Anja Weyant +5
We analyze 143 Type Ia supernovae (SNeIa) observed in band (1.6-1.8 m) and find SNeIa are intrinsically brighter in -band with increasing host galaxy stellar mass. We fin…
Pilot HI Survey of Planck Galactic Cold Clumps with FAST
Ningyu Tang, Di Li, Pei Zuo +17
We present a pilot HI survey of 17 Planck Galactic Cold Clumps (PGCCs) with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). HI Narrow Self-Absorption (HINSA) is a…
Planning the scientific applications of the Five-hundred-meter Aperture Spherical radio Telescope
Di Li, John M. Dickey, Shu Liu
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is by far the largest telescope of any kind ever built. FAST produced its first light in September 2016 and it is n…
The Interstellar Medium: The Key Component in Galactic Evolution and Modern Cosmology
Carl Heiles, Di Li, Naomi McClure-Griffiths +2
The gases of the interstellar medium (ISM) possess orders of magnitude more mass than those of all the stars combined and are thus the prime component of the baryonic universe. Wit…