414 citations · 1.1k across the 41 of their papers we have counts for
36 papers · 1 filter
Metallicity Structure in Galactic Longitude-Velocity Diagrams of the Milky Way Disk and FIRE-2 Simulations
Victor Liu, Dana S. Balser, Trey V. Wenger
We investigate longitude-velocity (-) diagrams as a diagnostic tool to study the metallicity structure of the Milky Way (MW) disk. The present-day metallicity structure en…
Bar-spiral interaction produces radial migration and star formation bursts
Léa Marques, Ivan Minchev, Bridget Ratcliffe +8
Central bars and spirals are known to strongly impact the evolution of their host galaxies, both in terms of dynamics and star formation. Their typically different pattern speeds c…
Revisiting the Vertical Distribution of HI Absorbing Clouds in the Solar Neighborhood. II. Constraints from a Large Catalog of 21 cm Absorption Observations at High Galactic Latitudes
Daniel R. Rybarczyk, Trey V. Wenger, Snezana Stanimirović
The cold neutral medium (CNM) is where neutral atomic hydrogen (HI) is converted into molecular clouds, so the structure and kinematics of the CNM are key drivers of galaxy evoluti…
The Most Sensitive Radio Recombination Line Measurements Ever Made of the Galactic Warm Ionized Medium
T. M. Bania, Dana S. Balser, Trey V. Wenger +3
Diffuse ionized gas pervades the disk of the Milky Way. We detect extremely faint emission from this Galactic Warm Ionized Medium (WIM) using the Green Bank Telescope to make radio…
Revisiting the Vertical Distribution of HI Absorbing Clouds in the Solar Neighborhood
Trey V. Wenger, Daniel R. Rybarczyk, Snežana Stanimirović
The vertical distribution of cold neutral hydrogen (HI) clouds is a constraint on models of the structure, dynamics, and hydrostatic balance of the interstellar medium. In 1978, Cr…
The Metallicity-Electron Temperature Relationship in HII Regions
Dana S. Balser, Trey V. Wenger
HII region heavy-element abundances throughout the Galactic disk provide important constraints to theories of the formation and evolution of the Milky Way. In LTE, radio recombinat…
The GBT Diffuse Ionized Gas Survey (GDIGS): Discrete Sources
Dylan J. Linville, Matteo Luisi, L. D. Anderson +6
The Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS) traces ionized gas in the Galactic midplane by observing radio recombination line (RRL) emission from 4-8 GHz. The…
A comparison of the Milky Way's recent star formation revealed by dust thermal emission and high-mass stars
J. D. Soler, E. Zari, D. Elia +10
We present a comparison of the Milky Way's star formation rate (SFR) surface density () obtained with two independent state-of-the-art observational methods. The first…
Discovery of a New Population of Galactic HII Regions with Ionized Gas Velocity Gradients
Dana S. Balser, Trey V. Wenger, L. D. Anderson +4
We investigate the kinematic properties of Galactic HII regions using radio recombination line (RRL) emission detected by the Australia Telescope Compact Array (ATCA) at 4-10 GHz a…
The Southern HII Region Discovery Survey. II. The Full Catalog
Trey V. Wenger, J. R. Dawson, John M. Dickey +6
The Southern HII Region Discovery Survey (SHRDS) is a 900 hour Australia Telescope Compact Array 4-10 GHz radio continuum and radio recombination line (RRL) survey of Galactic HII…
The GBT Diffuse Ionized Gas Survey (GDIGS): Survey Overview and First Data Release
L. D. Anderson, Matteo Luisi, Bin Liu +6
The Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS) traces ionized gas in the Galactic midplane by measuring GHz radio recombination line (RRL) emission. The nom…
A VLA Census of the Galactic H II Region Population
William P. Armentrout, Loren D. Anderson, Trey V. Wenger +2
The Milky Way contains thousands of H II region candidates identified by their characteristic mid-infrared morphology, but lacking detections of ionized gas tracers such as radio c…
The Galactic HII Region Luminosity Function at Radio and Infrared Wavelengths
J. L. Mascoop, L. D. Anderson, Trey. V. Wenger +4
The Galactic HII region luminosity function (LF) is an important metric for understanding global star formation properties of the Milky Way, but only a few studies have been done a…
The GBT Diffuse Ionized Gas Survey: Tracing the Diffuse Ionized Gas around the Giant HII Region W43
Matteo Luisi, L. D. Anderson, Bin Liu +4
The Green Bank Telescope (GBT) Diffuse Ionized Gas Survey (GDIGS) is a fully-sampled radio recombination line (RRL) survey of the inner Galaxy at C-band (4-8 GHz). We average toget…
Metallicity Structure in the Milky Way Disk Revealed by Galactic HII Regions
Trey V. Wenger, Dana S. Balser, L. D. Anderson +1
The metallicity structure of the Milky Way disk stems from the chemodynamical evolutionary history of the Galaxy. We use the National Radio Astronomy Observatory Karl G. Jansky Ver…
Canadian Investigations of the Interstellar Medium
Alex S. Hill, Jan Cami, Laura Fissel +10
The interstellar medium mediates galactic evolution as the reservoir of material for future star formation and the repository of energy and matter output by stellar processes. Cana…
The Occurrence of Compact Groups of Galaxies Through Cosmic Time
Christopher D. Wiens, Trey V. Wenger, Panayiotis Tzanavaris +3
We use the outputs of a semi-analytical model of galaxy formation run on the Millennium Simulation to investigate the prevalence of 3D compact groups (CGs) of galaxies from $z = 11…
The Southern HII Region Discovery Survey I: The Bright Catalog
Trey V. Wenger, John. M. Dickey, C. H. Jordan +7
The census of Galactic HII regions is vastly incomplete in the Southern sky. We use the Australia Telescope Compact Array (ATCA) to observe 4-10 GHz radio continuum and hydrogen ra…
A Galactic Plane Defined by the Milky Way HII Region Distribution
L. D. Anderson, Trey V. Wenger, W. P. Armentrout +2
We develop a framework for a new definition of the Galactic midplane, allowing for tilt (rotation about Galactic azimuth 90deg.), and roll (rotation about Galactic azimuth 0deg.) o…
Astrochemical Kinetic Grid Models of Groups of Observed Molecular Abundances: Taurus Molecular Cloud 1 (TMC-1)
Dominique M. Maffucci, Trey V. Wenger, Romane Le Gal +1
The emission line spectra of cyanoacetylene and methanol reveal chemical and physical heterogeneity on very small (< 0.1 pc) scales toward the peak in cyanopolyyne emission in the…
Science with an ngVLA: Radio Recombination Lines from HII Regions
Dana S. Balser, L. D. Anderson, T. M. Bania +4
The ngVLA will create a Galaxy-wide, volume-limited sample of HII regions; solve some long standing problems in the physics of HII regions; and provide an extinction-free star form…
Hydrogen Radio Recombination Line Emission from M51 and NGC628
Matteo Luisi, L. D. Anderson, T. M. Bania +3
We report the discovery of hydrogen radio recombination line (RRL) emission from two galaxies with star formation rates (SFRs) similar to that of the Milky Way: M51 and NGC628. We…
Kinematic Distances: A Monte Carlo Method
Trey V. Wenger, Dana S. Balser, L. D. Anderson +1
Distances to high mass star forming regions (HMSFRs) in the Milky Way are a crucial constraint on the structure of the Galaxy. Only kinematic distances are available for a majority…
Carbon Monoxide Observations Toward Star Forming Regions in the Outer Scutum-Centaurus Spiral Arm
Trey V. Wenger, Asad A. Khan, Nicholas G. Ferraro +4
The Outer Scutum-Centaurus arm (OSC) is the most distant molecular spiral arm known in the Milky Way. The OSC may be the very distant end of the well-known Scutum-Centaurus arm, wh…