414 citations · 2.3k across the 55 of their papers we have counts for
9 papers · 1 filter
3-He in the Milky Way Interstellar Medium: Ionization Structure
T. M. Bania, Dana S. Balser, Robert T. Rood +2
The cosmic abundance of the 3-He isotope has important implications for many fields of astrophysics. We are using the 8.665 GHz hyperfine transition of 3-He+ to determine the 3-He/…
Out-Of-Focus Holography at the Green Bank Telescope
B. Nikolic, R. M. Prestage, D. S. Balser +2
We describe phase-retrieval holography measurements of the 100-m diameter Green Bank Telescope using astronomical sources and an astronomical receiver operating at a wavelength of…
The Electron Temperature Gradient in the Galactic Disk
C. Quireza, R. T. Rood, T. M. Bania +2
We derive the electron temperature gradient in the Galactic disk using a sample of HII regions that spans Galactocentric distances 0--17 kpc. The electron temperature was calculate…
The Chemical Evolution of Helium
Dana S. Balser
We report on measurements of the 4He abundance toward the outer Galaxy HII region S206 with the NRAO Green Bank telescope. Observations of hydrogen and helium radio recombination l…
Radio Recombination Lines in Galactic HII Regions
Cintia Quireza, Robert T. Rood, Dana S. Balser +1
We report radio recombination line (RRL) and continuum observations of a sample of 106 Galactic HII regions made with the NRAO 140 Foot radio telescope in Green Bank, WV. We believ…
The Detection of 3He+ in a Planetary Nebula Using the VLA
Dana S. Balser, W. M. Goss, T. M. Bania +1
We used the VLA to search for 3He+ emission from two Galactic planetary nebulae (PNe): NGC6572 and J320}. Standard stellar models predict that the 3He/H abundance ratios for PNe sh…