Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...197..182w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 197, no. 1-2, May 1988, p. 182-184.
Astronomy and Astrophysics
Astrophysics
10
Active Galactic Nuclei, Emission Spectra, Line Spectra, Stellar Coronas, Symbiotic Stars, X Ray Binaries, Charge Coupled Devices, Exosat Satellite, Iron, Radial Velocity, Radio Observation
Scientific paper
From observations at both Mt. Wilson and Palomar of the symbiotic star HM Sge, the authors have set new limits on the ratio of [Fe VII]/[Fe X] line intensities near 10-2 at nearly the same time as soft X-rays were also observed in that star. The resulting number ratio of Fe6+ ions to Fe9+ ions is greater than 1.4×104. A possible explanation is offered by analogy with active galactic nuclei in terms of a far-UV, soft X-ray, "big bump" that shows a sharp drop between 100 eV and 300 eV. Radiation near 100 eV would then ionize Fe5+ ions but there would be a deficiency of radiation to ionize Fe8+ ions. Radial velocities for various ions during the interval of 1983 - 1985 are also reported.
Brugel Edward W.
Wallerstein George
No associations
LandOfFree
Observations of forbidden Fe VII and forbidden Fe X lines in the symbiotic star HM SGE during the interval of 1983-1985 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observations of forbidden Fe VII and forbidden Fe X lines in the symbiotic star HM SGE during the interval of 1983-1985, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observations of forbidden Fe VII and forbidden Fe X lines in the symbiotic star HM SGE during the interval of 1983-1985 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-853625