146 citations · 865 across the 18 of their papers we have counts for
18 papers
Faint absorption of the ground state hyperfine-splitting transitions of hydroxyl at 18 cm in the Galactic Disk
M. R. Rugel, H. Beuther, J. D. Soler +15
The interstellar hydride hydroxyl (OH) is a potential tracer of CO-dark molecular gas. We present new absorption line observations of OH at 18-cm wavelength towards four continuum…
Large-scale Map of Millimeter-wavelength Hydrogen Radio Recombination Lines around a Young Massive Star Cluster
Q. Nguyen-Luong, L. D. Anderson, L. D. +19
We report the first map of large-scale (10 pc in length) emission of millimeter-wavelength hydrogen recombination lines (mm-RRLs) toward the giant H II region around the W43-Main y…
[CII] 158 μm self-absorption and optical depth effects
C. Guevara, J. Stutzki, V. Ossenkopf-Okada +7
Context. The [CII] 158 μm far-infrared (FIR) fine-structure line is one of the most important cooling lines of the star-forming interstellar medium (ISM). High spectral resolution…
Cloud formation in the atomic and molecular phase: HI self absorption (HISA) towards a Giant Molecular Filament
Y. Wang, S. Bihr, H. Beuther +20
Molecular clouds form from the atomic phase of the interstellar medium. However, characterizing the transition between the atomic and the molecular interstellar medium (ISM) is a d…
The HI/OH/Recombination line survey of the inner Milky Way (THOR): data release 2 and HI overview
Y. Wang, H. Beuther, M. R. Rugel +17
With the Very Large Array (VLA) in C-configuration, we observed a large portion of the first Galactic quadrant ( and $\lvert b \rvert \leq 1.25…
Feedback in W49A diagnosed with radio recombination lines and models
M. R. Rugel, D. Rahner, H. Beuther +20
We present images of radio recombination lines (RRLs) at wavelengths around 17 cm from the star-forming region W49A to determine the kinematics of ionized gas in the THOR survey (T…
A search for hypercompact HII regions in the Galactic Plane
A. Y. Yang, M. A. Thompson, W. W. Tian +3
We have carried out the largest and most unbiased search for hypercompact (HC) HII regions. Our method combines four interferometric radio continuum surveys (THOR, CORNISH, MAGPIS…
Radio continuum emission in the northern Galactic plane: Sources and spectral indices from the THOR survey
Y. Wang, S. Bihr, M. Rugel +15
Radio continuum surveys of the Galactic plane can find and characterize HII regions, supernova remnants (SNRs), planetary nebulae (PNe), and extragalactic sources. A number of surv…
OH absorption in the first quadrant of the Milky Way as seen by THOR
M. R. Rugel, H. Beuther, S. Bihr +20
The hydroxyl radical (OH) is present in the diffuse molecular and partially atomic phases of the interstellar medium (ISM), but its abundance relative to hydrogen is not clear. We…
Galactic Supernova Remnant Candidates Discovered by THOR
L. D. Anderson, Y. Wang, S. Bihr +17
There is a considerable deficiency in the number of known supernova remnants (SNRs) in the Galaxy compared to that expected. Searches for extended low-surface brightness radio sour…
HI-to-H2 Transition Layers in the Star-Forming Region W43
Shmuel Bialy, Simon Bihr, Henrik Beuther +2
The process of atomic-to-molecular (HI-to-H) gas conversion is fundamental for molecular-cloud formation and star formation. 21 cm observations of the star-forming region W43 r…
The HI/OH/Recombination line survey of the inner Milky Way (THOR)
H. Beuther, S. Bihr, M. Rugel +27
Context: The past decade has witnessed a large number of Galactic plane surveys at angular resolutions below 20". However, no comparable high-resolution survey exists at long radio…
Continuum sources from the THOR survey between 1 and 2 GHz
S. Bihr, K. G. Johnston, H. Beuther +19
We carried out a large program with the Karl G. Jansky Very Large Array (VLA): "THOR: The HI, OH, Recombination line survey of the Milky Way". We observed a significant portion of…
Hierarchical fragmentation and collapse signatures in a high-mass starless region
H. Beuther, Th. Henning, H. Linz +6
Aims: Understanding the fragmentation and collapse properties of the dense gas during the onset of high-mass star formation. Methods: We observed the massive (~800M_sun) starless g…
THOR - The HI, OH, Recombination Line Survey of the Milky Way - The pilot study: HI observations of the giant molecular cloud W43
S. Bihr, H. Beuther, J. Ott +30
To study the atomic, molecular and ionized emission of Giant Molecular Clouds (GMCs), we have initiated a Large Program with the VLA: 'THOR - The HI, OH, Recombination Line survey…
Kinematic and Thermal Structure at the onset of high-mass star formation
S. Bihr, H. Beuther, H. Linz +6
We want to understand the kinematic and thermal properties of young massive gas clumps prior to and at the earliest evolutionary stages of high-mass star formation. Do we find sign…
Chemical evolution in the early phases of massive star formation. I
T. Gerner, H. Beuther, D. Semenov +5
Understanding the chemical evolution of young (high-mass) star-forming regions is a central topic in star formation research. Chemistry is employed as a unique tool 1) to investiga…
Fragmentation and dynamical collapse of the starless high-mass star-forming region IRDC18310-4
H. Beuther, H. Linz, J. Tackenberg +9
Aims: We study the fragmentation and dynamical properties of a massive starless gas clump at the onset of high-mass star formation. Methods: Based on Herschel continuum data we ide…