519 citations · 4.5k across the 73 of their papers we have counts for
73 papers
Gaia-EDR3 Parallax Distances to the Great Carina Nebula and its Star Clusters (Trumpler 14, 15, 16)
Michael Shull, Jeremy Darling, Charles Danforth
Using offset-corrected Gaia-EDR3 parallax measurements and spectrophotometric methods, we have determined distances for 69 massive stars in the Carina OB1 association and associate…
A Far Ultraviolet Spectroscopic Explorer Survey of Interstellar Molecular Hydrogen in the Galactic Disk
J. Michael Shull, Charles W. Danforth, Katherine L. Anderson
We report results from a FUSE survey of interstellar molecular hydrogen (H2) in the Galactic disk toward 139 O-type and early B-type stars at Galactic latitudes ,…
Softening of the Metagalactic Ionizing Background from Internal He II Absorption in Quasars
Michael Shull, Charles Danforth
Quasars and active galactic nuclei (AGN) are significant contributors to the metagalactic ionizing background at redshifts z < 3. Recent HST/COS composite spectra of AGN find a har…
Distances to Galactic OB-stars: Photometry vs. Parallax
J. Michael Shull, Charles W. Danforth
For application to surveys of interstellar matter and Galactic structure, we compute new spectrophotometric distances to 139 OB stars frequently used as background targets for UV s…
The Ultraviolet Detection of Diffuse Gas in Galaxy Groups
John T. Stocke, Brian A. Keeney, Charles W. Danforth +5
A small survey of the UV-absorbing gas in 12 low- galaxy groups has been conducted using the Cosmic Origins Spectrograph (COS) on-board the Hubble Space Telescope (HST). Targets…
Observations of the MIssing Baryons in the warm-hot intergalactic medium
F. Nicastro, J. Kaastra, Y. Krongold +18
It has been known for decades that the observed number of baryons in the local universe falls about 30-40% short of the total number of baryons predicted by Big-Bang Nucleosynthesi…