IRAS observations of starburst and nonactive spiral galaxies

Abstract

view Abstract Citations (51) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS IRAS Observations of Starburst and Nonactive Spiral Galaxies Sekiguchi, Kazuhiro Abstract Far-infrared properties of starburst, Seyfert II, and nonactive spiral galaxies are analyzed using IRAS observations at 25, 60, and 100 microns. Both starburst galaxies and nonactive spirals concentrate in a small area in IR color-color diagrams. These observed colors can be interpreted in terms of a cool (about 30 K) disk component plus a warm (about 80-90 K) component. The total IR luminosities of the starburst galaxies range from 10 to the 10th to 10 to the 12th solar luminosities, while the upper limit of nonactive spiral galaxies is about 10 the 11th solar luminosities. The IR color of the starburst galaxies is that of a normal spiral galaxy plus a larger warm component contribution. The 60 micron flux is 10-20 percent larger than in the nonactive spirals of this sample. The fraction of 60-micron emission attributable to the warm component can be used as an indicator for the star-formation activity in galaxies. Publication: The Astrophysical Journal Pub Date: May 1987 DOI: 10.1086/165187 Bibcode: 1987ApJ...316..145S Keywords: Far Infrared Radiation; Galactic Radiation; Satellite Observation; Spiral Galaxies; Starburst Galaxies; Stellar Evolution; Color-Color Diagram; Infrared Astronomy Satellite; Luminous Intensity; Seyfert Galaxies; Spaceborne Astronomy; Spectrum Analysis; Astrophysics; GALAXIES: STELLAR CONTENT; INFRARED: SOURCES; STARS: FORMATION full text sources ADS | data products NED (63) SIMBAD (58)