High-spatial-resolution, near-infrared observations of ARP 220

Details High-spatial-resolution, near-infrared observations of ARP 220 High-spatial-resolution, near-infrared observations of ARP 220

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93.1057n&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, May 1987, p. 1057-1061. NSF-supported research.

Astronomy and Astrophysics

Astronomy

16

Galactic Nuclei, Infrared Sources (Astronomy), Near Infrared Radiation, Spatial Resolution, Astronomical Photometry, Extragalactic Radio Sources, Luminosity

Scientific paper

High-spatial-resolution slit scans of the nucleus of Arp 220 are presented along with near-infrared photometry of the nuclear region. A single nucleus is found coincident with the strongest radio peak. The core is resolved to be on the order of 1 arcsec (370 pc) in diameter. The photometry of the central region shows a minimum near 3.7 μm which is inconsistent with the near-infrared source being a "classical" nonthermal source, such as 3C 273, embedded in a dust cloud.

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