235 citations · 955 across the 19 of their papers we have counts for
19 papers
The parallax and 3D kinematics of water masers in the massive star-forming region G034.43+0.24
Xiaofeng Mai, Bo Zhang, M. J. Reid +12
We report a trigonometric parallax measurement of 22 GHz water masers in the massive star-forming region G034.43+0.24 as part of the Bar and Spiral Structure Legacy (BeSSeL) Survey…
A Milliarcsecond-accurate Position for Sagittarius A*
Shuangjing Xu, Bo Zhang, Mark J. Reid +3
The absolute position of Sgr A*, the compact radio source at the center of the Milky Way, had been uncertain by several tens of milliarcseconds. Here we report improved astrometric…
Water Maser Survey towards off-plane O-rich AGBs around the orbital plane of the Sagittarius Stellar Stream
Yuanwei Wu, Bo Zhang, Jingjing Li +1
A 22 GHz water maser survey was conducted towards 178 O-rich AGB stars with the aim of identifying maser emission associated with the Sagittarius stellar stream. In this survey, ma…
A VLBA Trigonometric Parallax for RR Aql and the Mira PL Relation
Yan Sun, Bo Zhang, Mark J. Reid +4
We report VLBA observations of 22 GHz HO and 43 GHz SiO masers toward the Mira variable RR Aql. By fitting the SiO maser emission to a circular ring, we estimate the absolute…
The Bar and Spiral Arms in the Milky Way: Structure and Kinematics
Juntai Shen, Xing-Wu Zheng
The Milky Way is a spiral galaxy with the Schechter characteristic luminosity , thus an important anchor point of the Hubble sequence of all spiral galaxies. Yet the true appe…
The radio properties of the OH megamaser galaxy IRAS 02524+2046
Hao Peng, Zhongzu Wu, Bo Zhang +7
We present results from VLBI observations of continuum and OH line emission in IRAS 02524+2046 and also arcsecond-scale radio properties of this galaxy using VLA archive data. We f…
Parallaxes for star forming regions in the inner Perseus spiral arm
Bo Zhang, Mark J. Reid, Lian Zhang +8
We report trigonometric parallax and proper motion measurements of 6.7-GHz CH3OH and 22-GHz H2O masers in eight high-mass star-forming regions (HMSFRs) based on VLBA observations a…
Extended ammonia observations towards the 'Integral-Shaped Filament'
Gang Wu, Keping Qiu, Jarken Esimbek +4
Recent observations suggest a scenario in which filamentary structures in the ISM represent the first step towards clumps/cores and eventually star formation. The densest filaments…
Widespread Presence of Glycolaldehyde and Ethylene Glycol Around Sagittarius B2
Juan Li, Zhiqiang Shen, Junzhi Wang +10
We report the detection of widespread CHOHCHO and HOCHCHOH emission in Galactic center giant molecular cloud Sagittarius B2 using the Shanghai Tianma 65m Radio Telescop…
SiO Maser Survey towards off-plane O-rich AGBs around the orbital plane of the Sagittarius Stellar Stream
Yuanwei Wu, Noriyuki Matsunaga, Ross A. Burns +1
We conducted an SiO maser survey towards 221 O-rich AGB stars with the aim of identifying maser emission associated with the Sagittarius stellar stream. In this survey, maser emiss…
The local spiral structure of the Milky Way
Ye Xu, Mark Reid, Thomas Dame +7
The nature of the spiral structure of the Milky Way has long been debated. Only in the last decade have astronomers been able to accurately measure distances to a substantial numbe…
On the Relationship of UC H II Regions and Class II Methanol Masers: I. Source Catalogs
Bo Hu, Karl M. Menten, Yuanwei Wu +5
We conducted VLA C-configuration observations to measure positions and luminosities of Galactic Class II 6.7 GHz methanol masers and their associated ultra-compact H II regions. Th…
The catalogues and mid-infrared environment of Interstellar OH Masers
Haihua Qiao, Juan Li, Zhiqiang Shen +2
Data for a number of OH maser lines have been collected from surveys. The posi- tions are compared to recent mid-infrared (MIR) surveys such as Spitzer-GLIMPSE and WISE, restrictin…
Distribution of HNCO 5 in Massive Star-forming Regions
Juan Li, Junzhi Wang, Qiusheng Gu +1
The goal of this paper is to study the spatial distribution of HNCO in massive star-forming regions, and investigate its spatial association with infrared sources, as well as physi…
Large-Scale Kinematics, Astrochemistry and Magnetic Field Studies of Massive Star-forming Regions through HC3N, HNC and C2H Mappings
Juan Li, Junzhi Wang, Qiusheng Gu +2
We have mapped 27 massive star-forming regions associated with water masers using three dense gas tracers: HC3N 10-9, HNC 1-0 and C2H 1-0. The FWHM sizes of HNC clumps and C2H clum…
The Bar and Spiral Structure Legacy (BeSSeL) Survey: Mapping the Milky Way with VLBI Astrometry
Andreas Brunthaler, Mark J. Reid, Karl M. Menten +14
Astrometric Very Long Baseline Interferometry (VLBI) observations of maser sources in the Milky Way are used to map the spiral structure of our Galaxy and to determine fundamental…
A Trigonometric Parallax of Sgr B2
M. J. Reid, K. M. Menten, X. W. Zheng +2
We have measured the positions of water masers in Sgr B2, a massive star forming region in the Galactic center, relative to an extragalactic radio source with the Very Long Baselin…
Full-Polarization Observations of OH Masers in Massive Star-Forming Regions: I. Data
Vincent L. Fish, Mark J. Reid, Alice L. Argon +1
We present full-polarization VLBA maps of the ground-state, main-line, 2 Pi 3/2, J = 3/2 OH masers in 18 Galactic massive star-forming regions. This is the first large polarization…
VLBA Imaging of the OH Maser in IIIZw35
A. S. Trotter, J. M. Moran, L. J. Greenhill +2
We present a parsec-scale image of the OH maser in the nucleus of the active galaxy IIIZw35, made using the Very Long Baseline Array at a wavelength of 18 cm. We detected two disti…