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IR observations of the peculiar galaxy Arp220

Emerson, J. P., Clegg, P. E., Gee, G., Cunningham, C. T., Griffin, Matthew Joseph, Brown, L. M. J., Robson, E. I. and Longmore, A. J. 1984. IR observations of the peculiar galaxy Arp220. Nature 311 (5983) , pp. 237-238. 10.1038/311237a0

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Observations from IRAS (the Infrared Astronomical Satellite) have shown that the peculiar galaxy Arp220 (=IC4553) has extreme IR properties1. Its IR luminosity is 100 times greater than normal spirals and nearly equals that of the most luminous Seyfert known, Mkn231. Its optical appearance suggests that it is either a recent merger or that it has a prominent central dust lane. Soifer et al. 1 have discussed whether a starburst or a Seyfert nucleus can better explain their observations. We report here 20-, 350- and 760-µm observations which constrain the mass and size of the emitting region and compare Arp220 with the archetypal starburst galaxy M82.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: NPG
ISSN: 0028-0836
Last Modified: 04 Jun 2017 02:12

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