Fabry-Perot observations of Fe X and Fe XIV in the Cygnus Loop.
Abstract
We present results of a continuing program of observations of SNRs in the [Fe X] 6374 Å and [Fe XIV] 5303 Å coronal lines using the Fabry-Perot spectrophotometer of the Observatoire de Marseille. We have measured these lines at numerous places along the northeastern ridge of the Cygnus Loop. Our data generally agree with previously published brightnesses, obtained with non spectral techniques. The brightest [Fe X] features reach 5 10-7 erg cm-2 s-1 sr-1 averaged over 10 arcmin2. Evidence for line broadening (100 km s-1 FWHM) in a few bright fields is presented.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1989
- Bibcode:
- 1989A&A...211..217B
- Keywords:
-
- Fabry-Perot Spectrometers;
- Forbidden Bands;
- Iron;
- Nebulae;
- Supernova Remnants;
- X Ray Sources;
- Astronomical Models;
- Brightness Distribution;
- Charge Coupled Devices;
- Cygnus Constellation;
- Emission Spectra;
- Ionization;
- Visible Spectrum;
- Astrophysics