Search Results - "Armour, Mary‐Helen"

3‐D geophysical modeling of a buried, simple impact crater: Holleford impact structure, Ontario, Canada by Armour, Mary‐Helen, Boyce, Joseph I., Shulman, Zackary, Zilkey, David R.

“…Holleford Crater is a deeply buried, 2.35 km diameter late Proterozoic‐early Cambrian (550 ± 50 Ma) simple impact crater located in southeastern Ontario,…”
Get full text

Emission‐Line Helium Abundances in Highly Obscured Nebulae by Armour, Mary‐Helen, Ballantyne, David R., Ferland, Gary J., Karr, Jennifer, Martin, P. G.

“…This paper outlines a way to determine the ionization correction factor (ICF) using only infrared data. We identify four line pairs, [Neiii] 36 μm/[Neii] 12.8…”
Get full text

Emission-line Helium Abundances in Highly Obscured Nebulae by Armour, Mary-Helen, Ballantyne, David R, Ferland, Gary J, Karr, Jennifer, Martin, P. G

“…This paper outlines a way to determine the ICF using only infrared data. We identify four line pairs, [NeIII] 36$\micron$/[NeII] 12.8$\micron$,…”
Get full text