The optical spectrum and morphology of the probable X-ray galaxy NGC 5506 /3U 1410-03/

Details The optical spectrum and morphology of the probable X-ray galaxy NGC 5506 /3U 1410-03/ The optical spectrum and morphology of the probable X-ray galaxy NGC 5506 /3U 1410-03/

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.177..673w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 177, Dec. 1976, p. 673-685.

Astronomy and Astrophysics

Astronomy

71

Astronomical Spectroscopy, Galactic Nuclei, Galactic Radiation, Optical Measurement, X Ray Sources, X Ray Spectra, Balmer Series, Compton Effect, Emission Spectra, Seyfert Galaxies, Spectral Line Width, Spectrum Analysis

Scientific paper

Optical and X-ray spectra of the galaxy NGC 5506 are analyzed, and it is concluded that the galaxy is active with many highly ionized species, and that identification with the X-ray source 3U 1410-03 is valid. Photographs reveal a highly elongated system traversed by dust lanes, suggesting irregular type II with some resemblance to the galaxy M 82. Lines in the spectrum of the galactic nucleus are discussed and compared to those of comparable objects; dereddened line intensities and reddening of the nucleus are analyzed. NGC 5506 is assigned to a class of objects with ionization and excitation conditions reminiscent of Seyfert galaxies, but minus the high-velocity gas flow. A low-energy cutoff near 0.9 keV for the X-ray spectrum is required for identification with the X-ray source. Some further proposed NGC 5506 observations are listed.

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