Computer Science
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.337..337p&link_type=abstract
Nature (ISSN 0028-0836), vol. 337, Jan. 26, 1989, p. 337-339.
Computer Science
17
H Ii Regions, Nebulae, Photoionization, Stellar Spectra, X Ray Binaries, Absorption Spectra, Charge Coupled Devices, Magellanic Clouds, Spectral Line Width, Stellar Luminosity, Stellar Temperature
Scientific paper
The characteristics of the H II region N44C in the LMC are interpreted here in terms of a fossil X-ray photoionized nebula resembling the recently discovered He III region around the luminous X-ray binary LMC X-1. The presently extinct X-ray source that has been responsible for the high ionization in N44C could well be identical with the transient LMC X-5. From photon-counting arguments and recombination timescales of the interstellar plasma, it is found that less than 100 years ago the X-ray luminosity should have been comparable with that of the most luminous X-ray binaries.
Motch Christian
Pakull Manfred W.
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