352 citations · 1.6k across the 43 of their papers we have counts for
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CKVul: evolving nebula and three curious background stars
M. Hajduk, P. A. M. van Hoof, A. A. Zijlstra
We analyse the remnants of CK Vul (Nova Vul 1670) using optical imaging and spectroscopy. The imaging, obtained between 1991 and 2010, spans 5.6% of the life-time of the nebula. Th…
Effects of External Radiation Fields on Line Emission - Application to Star-forming Regions
Marios Chatzikos, Gary Ferland, Robin Williams +2
A variety of astronomical environments contain clouds irradiated by a combination of isotropic and beamed radiation fields. For example, molecular clouds may be irradiated by the i…
Carbon Monoxide in the Cold Debris of Supernova 1987A
J. Kamenetzky, R. McCray, R. Indebetouw +27
We report spectroscopic and imaging observations of rotational transitions of cold CO and SiO in the ejecta of SN1987A, the first such emission detected in a supernova remnant. In…
Expanded Iron UTA spectra -- probing the thermal stability limits in AGN clouds
G. J. Ferland, R. Kisielius, F. P. Keenan +5
The Fe unresolved transition array (UTAs) produce prominent features in the 15-17?A wavelength range in the spectra of Active Galactic Nuclei (AGN). Here we present new calculation…