453 citations · 1.3k across the 16 of their papers we have counts for
6 papers · 1 filter
The Connection Between Different Tracers Of The Diffuse Interstellar Medium: Kinematics
Johnathan S. Rice, S. R. Federman, Nicolas Flagey +4
Using visible, radio, microwave, and sub-mm data, we study several lines of sight toward stars generally closer than 1 kpc on a component-by-component basis. We derive the componen…
Abundances and Depletions of Neutron-Capture Elements in the Interstellar Medium
Adam M. Ritchey, Steven R. Federman, David L. Lambert
We present an extensive analysis of the gas-phase abundances and depletion behaviors of neutron-capture elements in the interstellar medium (ISM). Column densities (or upper limits…
The CN/CN Ratio in Diffuse Molecular Clouds
Adam M. Ritchey, Steven R. Federman, David L. Lambert
We report the first detection of CN in diffuse molecular gas from a detailed examination of CN absorption lines in archival VLT/UVES spectra of stars probing local diffuse c…
The 7Li/6Li Isotope Ratio Near the Supernova Remnant IC 443
C. J. Taylor, A. M. Ritchey, S. R. Federman +1
We present an analysis of 7Li/6Li isotope ratios along four sight lines that probe diffuse molecular gas near the supernova remnant IC 443. Recent gamma-ray observations have revea…
The Abundance of Boron in Diffuse Interstellar Clouds
A. M. Ritchey, S. R. Federman, Y. Sheffer +1
We present a comprehensive survey of boron abundances in diffuse interstellar clouds from observations made with the Space Telescope Imaging Spectrograph (STIS) of the Hubble Space…
Interstellar CN and CH+ in Diffuse Molecular Clouds: 12C/13C Ratios and CN Excitation
A. M. Ritchey, S. R. Federman, D. L. Lambert
We present very high signal-to-noise ratio absorption-line observations of CN and CH+ along 13 lines of sight through diffuse molecular clouds. The data are examined to extract pre…