we propose cam cvf spectral mapping of ngc4945 and ic342 in order to follow-up and complement our iso sws and pht-s studies of these starburst galaxies. active star formation in ngc4945 has been shown e.g. by the detection of the neii and ne iii lines at 12.8 and 15.5 micron. our current model for ngc4945 assumes a nucleus in a post-burst phase surrounded by a starburst disk. the spectra of ngc4945 are also rich in prominent pah/dust features. comparable results are to be expected for ic342. however, due to the large aperture of the sws spectrometer it is not possible to disentangle the relative contributions from the burned-out nucleus and the surrounding starburst regions to the neon line emission. it is also impossible to judge where exactly the pah features, which are generally believed to be good starburst tracers, arise: in the starburst region itself or rather in photodissociation fronts at its outskirts. it is therefore crucial to obtain spatially resolved information using the cam lw cvf to cover the neii and neiii lines and many of the pah features with adequate s/n and spatial resolution.
Instrument
CAM01 , CAM04
Temporal Coverage
1997-08-11T02:47:41Z/1997-09-12T11:15:26Z
Version
1.0
Mission Description
The Infrared Space Observatory (ISO) was the worlds 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, MAIOLINO et al., 1999, 'IMAGING SPECTROSCOPY OF THE STARBURSTS NGC 4945 AND IC342: DISENTANGLING STARFORMING REGIONS', 1.0, European Space Agency, https://doi.org/10.5270/esa-synizk9
