369 citations · 2.1k across the 36 of their papers we have counts for
26 papers · 1 filter
Mapping the Cosmic-Ray Ionization Rate in the Local Galaxy with H
Nick Indriolo, Alexei V. Ivlev, T. Pellegrin +6
Chemistry in diffuse molecular clouds relies primarily on rapid ion-molecule reactions. Formation of the initial ions, H and H, is dominated by cosmic-ray ionization of H…
The densities in diffuse and translucent molecular clouds: estimates from observations of C and from 3-dimensional extinction maps
David A. Neufeld, Daniel E. Welty, Alexei V. Ivlev +7
Newly-computed collisional rate coefficients for the excitation of C in collisions with H, presented recently by Najar and Kalugina (2020), are significantly larger than th…
Re-evaluation of the cosmic-ray ionization rate in diffuse clouds
M. Obolentseva, A. V. Ivlev, K. Silsbee +6
All current estimates of the cosmic-ray (CR) ionization rate rely on assessments of the gas density along the probed sight lines. Until now, these have been based on observations o…
High-resolution SOFIA/EXES Spectroscopy of Water Absorption Lines in the Massive Young Binary W3 IRS 5
Jialu Li, Adwin Boogert, Andrew G. Barr +9
We present in this paper mid-infrared (5-8~m) spectroscopy toward the massive young binary W3~IRS~5, using the EXES spectrometer in high-resolution mode (50,000) from the…
Salt-bearing disk candidates around high-mass young stellar objects
Adam Ginsburg, Brett A. McGuire, Patricio Sanhueza +6
Molecular lines tracing the orbital motion of gas in a well-defined disk are valuable tools for inferring both the properties of the disk and the star it surrounds. Lines that aris…
HyGAL: Characterizing the Galactic ISM with observations of hydrides and other small molecules -- I. Survey description and a first look toward W3(OH), W3 IRS5 and NGC 7538 IRS1
A. M. Jacob, D. A. Neufeld, P. Schilke +22
The HyGAL SOFIA legacy program surveys six hydride molecules -- ArH+, OH+, H2O+, SH, OH, and CH -- and two atomic constituents -- C+ and O -- within the diffuse interstellar medium…