we propose to study extended emission of intermediate mass pre-main sequence stars. we have selected a sample of nearby herbig ae/be stars. we will investigate the contribution of individual dust populations (large grains, small graphites, pah) to the overall energetics of the halo. for this end, the well known mid ir excess of the objects will be imaged at different cvf positions. the detailed picture of the circumstellar environment will be used to disentangle the luminosity of the disk and envelope. our radiative transfer models will be constrained by far ir maps. out of these maps we will derive physical parameters such as far ir sizes, colour temperatures, total dust mass, density distributions and opacities.
Instrument
CAM01 , CAM04 , PHT32
Temporal Coverage
1996-02-06T14:38:27Z/1997-11-03T03:32:57Z
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, R., 1999, 'THE ENERGETICS OF EXTENDED EMISSION AROUND HERBIG HE\/BE STARS', 1.0, European Space Agency, https://doi.org/10.5270/esa-9mcbtgv
