= = based on simple starburst models of a limited sample of iso lws observations of four ultraluminous infrared galaxies (l_ir > 10^12 l_solar; uligs), we have found that the age of the starburst responsible for the ir luminosity of the galaxy might be measured by it.s [cii] 158 um / fir ratio. we propose a new set of observations of a sample of 11 uligs at redshifts < 0.15 to help confirm and extend this conclusion, provide an evolutionary sequence, and at the same time test the suggestion that starbursts (not agns) power all of these uligs (lutz et al. 1996). as local analogs of high-z protogalaxies, the new ulig observations will also test the usefulness of [cii] as a tracer of high-z objects and, ultimately, as a diagnostic of galaxy formation models. the assembled team consists of experienced iso observers from a broad cross-section of institutions.
Instrument
LWS02
Temporal Coverage
1997-11-09T22:40:25Z/1998-04-03T15:08:04Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the world's first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
European Space Agency, 1999, Square_Bracket_Openciisquare_Bracket_Close In Nearby Uligs: Probing The Starburst Age And The Luminosity Source, 1.0, European Space Agency, https://doi.org/10.5270/esa-37imj2w
