322 citations · 3.9k across the 54 of their papers we have counts for
28 papers · 1 filter
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…
A Reexamination of Phosphorus and Chlorine Depletions in the Diffuse Interstellar Medium
Adam M. Ritchey, J. M. Brown, S. R. Federman +1
We present a comprehensive examination of interstellar P and Cl abundances based on an analysis of archival spectra acquired with the Space Telescope Imaging Spectrograph of the Hu…
A High Precision Survey of the D/H Ratio in the Nearby Interstellar Medium
S. D. Friedman, P. Chayer, E. B. Jenkins +4
We present high S/N measurements of the H I Ly alpha absorption line toward 16 Galactic targets which are at distances between approximately 190 and 2200 pc, all beyond the wall of…
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…
HD 62542: Probing the Bare, Dense Core of a Translucent Interstellar Cloud
Daniel E. Welty, Paule Sonnentrucker, Theodore P. Snow +1
We discuss the interstellar absorption from many atomic and molecular species seen in high-resolution /STIS UV and high-S/N optical spectra of the moderately reddened B3-5~V s…
The Apache Point Observatory Catalog of Optical Diffuse Interstellar Bands
Haoyu Fan, L. M. Hobbs, Julie A. Dahlstrom +7
Aiming for a new and more comprehensive DIB catalog between 4,000 and 9,000Å, we revisited the Atlas Catalog based on the observations of HD 183143 and HD 204827 (Hobbs et al. 2008…