VLBI observations of the OH megamaser in IC 4553 (ARP 220)

Journal Article · Mon May 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185436· OSTI ID:5642977

Diamond, P J; Norris, R P; Baan, W A; Booth, R S ^[1]

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1. National Radio Astronomy Observatory, Charlottesville, VA (USA)

IC 4553 (Arp 220) is an infrared-luminous galaxy at a redshift of 0.018 which shows characteristics of both Seyfert and starburst activity and is believed to be the result of a recent merger. It is also distinguished by its OH megamaser which is one of the most luminous OH masers discovered. The VLBI observations of the OH reported here reveal compact structure in the megamaser which is consistent with the suggested presence of two Seyfert nuclei in IC 4553. 18 refs.

• OSTI ID: 5642977
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 340; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
BASIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
GALAXIES
GALAXY NUCLEI
GRAVITATIONAL INTERACTIONS
HYDROXYL RADICALS
INFRARED RADIATION
INTERACTIONS
INTERFEROMETRY
INTERSTELLAR SPACE
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
MORPHOLOGY
RADIATIONS
RADICALS
RED SHIFT
SEYFERT GALAXIES
SPACE