283 citations · 566 across the 2 of their papers we have counts for
3 papers
astro-ph2008★ 283 cited
Ultraviolet Survey of CO and H_2 in Diffuse Molecular Clouds: The Reflection of Two Photochemistry Regimes in Abundance Relationships
Y. Sheffer, M. Rogers, S. R. Federman +4
(Abridged) We carried out a comprehensive far-ultraviolet (UV) survey of ^12CO and H_2 column densities along diffuse molecular Galactic sight lines in order to explore in detail t…
astro-ph2005
Cloud Structure and Physical Conditions in Star-Forming Regions from Optical Observations. II. Analysis
K. Pan, S. R. Federman, Y. Sheffer +1
To complement the optical absorption-line survey of diffuse molecular gas in Paper I, we obtained and analyzed far ultraviolet H and CO data on lines of sight toward stars in C…
astro-ph2003
Cloud Structure and Physical Conditions in Star-forming Regions from Optical Observations. I. Data and Component Structure
K. Pan, S. R. Federman, K. Cunha +2
We present high-resolution optical spectra (at ~0.6--1.8 km s-1) of interstellar CN, CH, CH^+, \ion{Ca}{1}, \ion{K}{1}, and \ion{Ca}{2} absorption toward 29 lines of sight in three…