294 citations · 578 across the 18 of their papers we have counts for
17 papers · 1 filter
Physical and Chemical Conditions of Molecular Gas in NGC 1068: The nuclear feedback in the circumnuclear disk and starburst ring
Bin Jia, Serena Viti, Erica Behrens +1
Molecular gas in galaxies is shaped by both star formation and active galactic nuclei. In NGC 1068, the circumnuclear disk and the starburst ring offer a nearby case to study these…
Testing the Physical Parameter Constraining Power of HCN and HNC with Neural Networks
Erica Behrens, Jeffrey G. Mangum, Mathilde Bouvier +2
We quantify the utility of HCN and HNC to characterize gas conditions in the nearby starburst galaxy NGC 253. We use measurements from the Atacama Large Millimeter/Submillimeter Ar…
Probing the Kinematics of Multiple- and Single-Protostar Systems in Perseus with N2H+
Erica Behrens, Adele Plunkett, Zhi-Yun Li
We analyze the dense gas kinematics in two Class 0/I protostellar cores, Per 30 and NGC 1333 IRAS 7, in the Perseus molecular cloud to determine whether their velocity structures a…
Shock-induced HCNH+ abundance enhancement in the heart of the starburst galaxy NGC 253 unveiled by ALCHEMI
Y. Gong, C. Henkel, C. T. Bop +15
Understanding the chemistry of molecular clouds is pivotal to elucidate star formation and galaxy evolution. As one of the important molecular ions, HCNH+ plays an important role i…
Neural Network Constraints on the Cosmic-Ray Ionization Rate and Other Physical Conditions in NGC 253 with ALCHEMI Measurements of HCN and HNC
Erica Behrens, Jeffrey G. Mangum, Serena Viti +15
We use a neural network model and ALMA observations of HCN and HNC to constrain the physical conditions, most notably the cosmic-ray ionization rate (CRIR, zeta), in the Central Mo…
An ALCHEMI inspection of sulphur-bearing species towards the central molecular zone of NGC 253
M. Bouvier, S. Viti, E. Behrens +19
Sulphur-bearing species are detected in various environments within Galactic star-forming regions and are particularly abundant in the gas phase of outflows and shocks, and photo-d…
Molecular isotopologue measurements toward super star clusters and the relation to their ages in NGC253 with ALCHEMI
J. Butterworth, S. Viti, P. P. Van der Werf +18
Determining the evolution of the CNO isotopes in the interstellar medium (ISM) of starburst galaxies can yield important constraints on the ages of superstar clusters (SSCs), or on…
Volume density structure of the NGC253 CMZ through ALCHEMI excitation analysis
Kunihiko Tanaka, Jeffrey G. Mangum, Serena Viti +21
We present a spatially-resolved excitation analysis for the central molecular zone (CMZ) of the starburst galaxy NGC 253 using the data from the ALMA Large program ALCHEMI, whereby…
Reconstructing the shock history in the CMZ of NGC 253 with ALCHEMI
K. -Y. Huang, S. Viti, J. Holdship +19
HNCO and SiO are well known shock tracers and have been observed in nearby galaxies, including the nearby (D=3.5 Mpc) starburst galaxy NGC 253. The simultaneous detection of these…
Tracing Interstellar Heating: An ALCHEMI Measurement of the HCN Isomers in NGC 253
Erica Behrens, Jeffrey G. Mangum, Jonathan Holdship +17
We analyze HCN and HNC emission in the nearby starburst galaxy NGC 253 to investigate its effectiveness in tracing heating processes associated with star formation. This study uses…
Energizing Star Formation: The Cosmic Ray Ionization Rate in NGC 253 Derived From ALCHEMI Measurements of HO and SO
Jonathan Holdship, Jeffrey G. Mangum, Serena Viti +16
The cosmic ray ionization rate (CRIR) is a key parameter in understanding the physical and chemical processes in the interstellar medium. Cosmic rays are a significant source of en…
ALCHEMI: an ALMA Comprehensive High-resolution Extragalactic Molecular Inventory. Survey presentation and first results from the ACA array
S. Martín, J. G. Mangum, N. Harada +32
We used the Atacama Large Millimeter/submillimeter Array (ALMA), covering a nearly contiguous 289 GHz frequency range between 84.2 and 373.2 GHz, to image the continuum and spectra…
Local Environments of Low-Redshift Supernovae
Serena A. Cronin, Dyas Utomo, Adam K. Leroy +7
We characterize the local (2-kpc sized) environments of Type Ia, II, and Ib/c supernovae (SNe) that have recently occurred in nearby ( Mpc) galaxies. Using ultraviolet…
Starburst Energy Feedback Seen Through HCO/HOC Emission in NGC 253 from ALCHEMI
Nanase Harada, Sergio Martín, Jeffrey G. Mangum +19
Molecular abundances are sensitive to UV-photon flux and cosmic-ray ionization rate. In starburst environments, the effects of high-energy photons and particles are expected to be…
PHANGS-ALMA: Arcsecond CO(2-1) Imaging of Nearby Star-Forming Galaxies
Adam K. Leroy, Eva Schinnerer, Annie Hughes +69
We present PHANGS-ALMA, the first survey to map CO J=2-1 line emission at ~1" ~ 100pc spatial resolution from a representative sample of 90 nearby (d<~20 Mpc) galaxies that lie on…
Relative Alignment between Dense Molecular Cores and Ambient Magnetic Field: The Synergy of Numerical Models and Observations
Che-Yu Chen, Erica A. Behrens, Jasmin E. Washington +26
The role played by magnetic field during star formation is an important topic in astrophysics. We investigate the correlation between the orientation of star-forming cores (as defi…
A z=0 Multi-wavelength Galaxy Synthesis I: A WISE and GALEX Atlas of Local Galaxies
Adam K. Leroy, Karin M. Sandstrom, Dustin Lang +8
We present an atlas of ultraviolet and infrared images of ~15,750 local (d < 50 Mpc) galaxies, as observed by NASA's WISE and GALEX missions. These maps have matched resolution (FW…