X-ray observations with the Einstein observatory of emission-line galaxies

X-ray observations of narrow-emission-line galaxies are presented and discussed. One source, NGC 136, is found to be extended in the soft X-ray band; three others, NGC 2992, NGC 5506, and NGC 7582, have been observed to vary in intensity. The best fit spectral index and cutoff energy E/sub a/ are derived for NGC 2992, NGC 5506, and NGC 7582. The X-ray spectra of these galaxies are similar to those of type I Seyfert galaxies. In the case of NGC 5506 and NGC 7582, the absorbing column N/sub H/ derived is about one order of magnitude greater than predicted from the reddening of the optical continuum and of the Balmer lines. Possible explanations for the discrepancy are discussed