The X-ray properties of two galaxies with high far-infrared luminosities - ARP 220 and Markarian 231

Eales, Stephen Anthony ORCID: https://orcid.org/0000-0002-7394-426X and Arnaud, K. A. 1988. The X-ray properties of two galaxies with high far-infrared luminosities - ARP 220 and Markarian 231. Astrophysical Journal 324 , pp. 193-197. 10.1086/165889

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Abstract

The Einstein X-ray data for the two luminous infrared galaxies, Arp 220 and Markarian 231 have been analyzed. There is an X-ray source about 1 arcmin from the position of Arp 220 that is probably associated with it. Mrk 231 was not detected. The size of the source and its soft X-ray spectrum implies that the bulk of the X-ray emission from Arp 220 cannot be coming from the obscured active nucleus at the galaxy's center. The absence of strong X-ray emission from the active nuclei in Arp 220 and Mrk 231 suggests that there must be more line-of-sight absorption to the active nuclei than is inferred from many of the absorption indicators available.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	active galactic nuclei; astronomical spectroscopy; far infrared radiation; galactic structure; markarian galaxies; x ray sources; absorption spectra; emission spectra
Publisher:	IOP Science
ISSN:	0004-637X
Last Modified:	24 Oct 2022 11:14
URI:	https://orca.cardiff.ac.uk/id/eprint/47425

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