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Published May 1987 | Published
Journal Article Open

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


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" (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.

Additional Information

© 1987 American Astronomical Society. Received 21 January 1987. We thank our night assistant at Palomar, Juan Carrasco, and the entire staff of the Observatory for their help in obtaining these observations. Discussions with Eric Becklin were most stimulating. This work was supported by grants from the NSF.

Attached Files

Published - 1987AJ_____93_1057N.pdf


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