we propose a program of high angular resolution imaging of the thermal emission from cool dust around a selection of pre-main-sequence young stars. these observations will be used to constrain the contribution from extended envelope emission to the total thermal dust emission from the stars. work in our group and by collaborators using the kuiper airborne observatory has shown that the far-infrared is a senstive region for detecting envelope emission. we have also shown that many brighter pre-main-sequence stars have extensive envelopes which call into question the inference of circumstellar disks based solely on spectral energy distributions. in this iso proposal we plan to extend this research to fainter and lower luminosity sources, as well as to a broader range of stellar types. with these data we will have a much more complete picture of the relationship of envelope contribution to disk contribution over a range of stellar luminosity from a few solar luminosities to a few thousand solar luminosities.
Instrument
PHT32
Temporal Coverage
1996-08-04T00:21:05Z/1997-01-07T22:29:36Z
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, HARVEY et al., 1999, 'DIFFRACTION LIMITED IMAGING OF PROTOSTELLAR CLOUDS', 1.0, European Space Agency, https://doi.org/10.5270/esa-sz4xdi3
