Global properties of interacting disk-type galaxies

Abstract

view Abstract Citations (274) References (65) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Global Properties of Interacting Disk-Type Galaxies Bushouse, Howard A. Abstract Optical, far-IR, and radio observations of global properties are presented for a sample of strongly interacting disk-type galaxies. Global star formation rates (SFRs) for the galaxies span a large range and are, on average, a factor of 2.5 higher than similarly determined global SFRs for isolated spiral galaxies. New star formation occurs preferentially in or near the nuclear regions. H I 21 cm emission-line profiles indicate the presence of anomalous velocity material and chaotic patterns of gas motion in many interacting systems. Few systems show evidence for the presence of a well-organized rotating H I disk such as are seen in isolated spiral galaxies. Neutral hydrogen gas mass-to-blue luminosity ratios are not atypical when compared with isolated spirals. The evidence indicates that local rather than global properties of these galaxies govern the star-formation process. The observations generally support the notion that enhanced SFRs are caused by increased cloud collision rates and dissipative flows of gas to the nucleus. Publication: The Astrophysical Journal Pub Date: September 1987 DOI: 10.1086/165523 Bibcode: 1987ApJ...320...49B Keywords: Astronomical Photometry; Disk Galaxies; Far Infrared Radiation; Galactic Nuclei; Interacting Galaxies; Radio Observation; Stellar Evolution; Computational Astrophysics; Infrared Astronomy; Stellar Luminosity; Astrophysics; GALAXIES: INTERACTIONS; GALAXIES: NUCLEI; GALAXIES: PHOTOMETRY; GALAXIES: STELLAR CONTENT; GALAXIES: STRUCTURE; INFRARED: SOURCES; STARS: FORMATION full text sources ADS | data products SIMBAD (120) NED (102)