Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..362..170s&link_type=abstract
The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
We present far-ultraviolet spectral images of the entire Cygnus Loop, observed with the Spectroscopy of Plasma Evolution from Astrophysical Radiation (SPEAR) instrument, also known as FIMS, onboard the first Korean Science and Technology SATellite, STSAT-1. The emission line maps of C IV 1550 Å, He II 1640 Å, Si IV/O IV] 1400 Å, and O III 1664 Å were made by fitting the spectra in each pixel with Gaussian line spread functions and a constant background. The spectral maps were subsequently smoothed with an adaptive smoothing algorithm. The spatial distributions of FUV emissions generally correspond to a limb-brightened shell and are similar to optical, radio and X-ray images. The features found in the present work include a ``carrot'', diffuse interior, and breakout features, which have not been seen in previous FUV studies. The images provide the first complete global morphology in FUV spectral line emissions of the remnant.
Edelstein José
Han Wei
Kim Il-Joong
Korpela Eric J.
Min Kyoung-Wook
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