203 citations · 1.6k across the 58 of their papers we have counts for
14 papers · 1 filter
Calibrating the Cepheid Period--Wesenheit Relation in the Gaia Bands using Galactic Open Cluster Cepheids
Zehao Lin, Ye Xu, Chaojie Hao +3
Establishing the period--Wesenheit relation requires independent and accurate distance measurements of classical Cepheids (DCEPs). The precise distance provided by an associated op…
44 GHz methanol masers: Observations toward 95 GHz methanol masers
Wenjin Yang, Ye Xu, Yoon Kyung Choi +5
We report a simultaneous 44 and 95 GHz class I methanol maser survey toward 144 sources from the 95 GHz class I methanol maser catalog. The observations were made with the three te…
Local Molecular Gas toward the Aquila Rift Region
Yang Su, Ji Yang, Qing-zeng Yan +11
We present the results of a ~250 square degrees CO mapping (+26d<l<+50d and -5d<b<+5d) toward the Aquila Rift region at a spatial resolution of ~50" and a grid spacing of 30". The…
Searching for Molecular Outflows with Support Vector Machines: Dark Cloud Complex in Cygnus
Shaobo Zhang, Ji Yang, Ye Xu +6
We present a survey of molecular outflows across the dark cloud complex in the Cygnus region, based on 46.75 deg^2 field of CO isotopologues data from Milky Way Imaging Scroll Pain…
A particular carbon-chain-producing region: L1489 starless core
Yuefang Wu, Lianghao Lin, Xunchuan Liu +14
We detected carbon-chain molecules (CCMs) HC2n+1N (n=1-3) and C3S in Ku band as well as {high-energy excitation lines including C4H N=9-8, J=17/2-15/2, 19/2-17/2, and CH3CCH J=5-4,…
The effects of ionization feedback on star formation: A case study of the M16 H II region
Jin-Long Xu, Annie Zavagno, Naiping Yu +8
We aim to investigate the impact of the ionized radiation from the M16 HII region on the surrounding molecular cloud and on its hosted star formation. To present comprehensive mult…
Two-Dimensional Molecular Gas and ongoing star formation around H II region Sh2-104
Jin-Long Xu, Ye Xu, Naiping Yu +6
We performed a multiwavelength study towards HII region Sh2-104. New maps of 12CO J=1-0 and 13CO J=1-0 were obtained from the Purple Mountain Observatory (PMO) 13.7 m radio telesco…
Molecular Clouds in the North American and Pelican Nebulae: Structures
Shaobo Zhang, Ye Xu, Ji Yang
We present observations of 4.25 square degree area toward the North American and Pelican Nebulae in the transitions of CO, CO, and CO. Three molecule…
A search for 95 GHz class I methanol masers in molecular outflows
Cong-Gui Gan, Xi Chen, Zhi-Qiang Shen +2
We have observed a sample of 288 molecular outflow sources including 123 high-mass and 165 low-mass sources to search for class I methanol masers at 95 GHz transition and to invest…
A Double-Jet System in the G31.41+0.31 Hot Molecular Core
Luca Moscadelli, Jing Jing Li, Riccardo Cesaroni +3
This work presents a detailed study of the gas kinematics towards the "Hot Molecular Core" (HMC) G31.41+0.31 via multi-epoch VLBI observations of the H2O 22 GHz and CH3OH 6.7 GHz m…
The Arecibo Methanol Maser Galactic Plane Survey-IV: Accurate Astrometry and Source Morphologies
J. D. Pandian, E. Momjian, Y. Xu +2
We present accurate absolute astrometry of 6.7 GHz methanol masers detected in the Arecibo Methanol Maser Galactic Plane Survey using MERLIN and the Expanded Very Large Array (EVLA…
C2H, HC3N and HNC Observations in OMC-2/3
Qiang Liu, Ji Yang, Yan Sun +1
For the first time, the OMC-2/3 region was mapped in C2H(1-0), HC3N(10-9) and HNC(1-0) lines. In general, the emissions from all the three molecular species reveal an extended fila…
A Search for Infall Evidence in EGOs I: the Northern Sample
Xi Chen, Zhi-Qiang Shen, Jing-jing Li +2
We report the first systematic survey of molecular lines (including HCO+ (1-0) and 12CO, 13CO, C18O (1-0) lines at 3 mm band) towards a new sample of 88 massive young stellar objec…
A multiwavelength study of massive star-forming region IRAS 22506+5944
Yuan-Wei Wu, Ye Xu, Ji Yang +1
We present a multi-line study of the massive star-forming region IRAS 22506+5944. A new 6.7 GHz methanol maser was detected. 12CO, 13CO, C18O and HCO+ J = 1-0 transition observatio…