Optical studies of X-ray selected Active Galactic Nuclei (AGN) in the direction of the Large Magellanic Cloud (LMC)

Details Optical studies of X-ray selected Active Galactic Nuclei (AGN) in the direction of the Large Magellanic Cloud (LMC) Optical studies of X-ray selected Active Galactic Nuclei (AGN) in the direction of the Large Magellanic Cloud (LMC)

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984xue..conf...28p&link_type=abstract

In Max-Planck Inst. für Physik und Astrophysik X-Ray and UV Emission from Active Galactic Nuclei p 28-31 (SEE N85-17790 08-88)

Astronomy and Astrophysics

Astrophysics

1

Active Galactic Nuclei, Magellanic Clouds, Optical Emission Spectroscopy, Stellar Spectra, Heao 2, Point Sources, Seyfert Galaxies, Stellar Luminosity, X Ray Sources

Scientific paper

Optical follow-up studies of 19 X-ray point sources detected with the Einstein HRI detector revealed that 17 are not associated with our neighboring galaxy being either galactic foreground stars or background interlopers. It is found that 80% of this sample are coronal-type stellar X-ray emitters, some of them optically faint Me stars with high Lx/Lv ratios. Including one less accurately positioned IPC source, only four objects are identified with active galactic nuclei showing broad Balmer and narrow forbidden emission. Their X-ray and optical luminosity classify them as Seyfert 1 galaxies at low redshift (z0.2). Two AGN at z = 0.063 and 0.075 are optically resolved on deep Schmidt plates, and 1 exhibits the combination of strong FeII emission and low OIII/H Beta line ratio. Their potential role for the study of the LMC interstellar medium is pointed out.

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