Imaging circumstellar disks around young stars by multi-aperture interferometry

Details Imaging circumstellar disks around young stars by multi-aperture interferometry Imaging circumstellar disks around young stars by multi-aperture interferometry

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.354..111m&link_type=abstract

In ESA, Targets for Space-Based Interferometry p 111-115 (SEE N93-31750 12-89)

Physics

1

Accretion Disks, Astronomical Interferometry, Light Scattering, Pre-Main Sequence Stars, Stellar Envelopes, Thermal Emission, Images, Spatial Resolution, Star Formation, Stellar Physics, Wavelengths

Scientific paper

Synthetic images of circumstellar accretion disks, computed from a model where the complete disk vertical structure is solved are presented. The emission processes in the disk are: thermal emission arising from accretion process, thermal emission due to reprocessing of stellar photons in the disk, and scattering of the stellar photons at the disk's surface. The images are discussed in the framework of multi-aperture interferometry. It is shown that scattering is easier to detect at short wavelengths while thermal emission is more easily detected at mid and far infrared wavelengths because of the smoother variation of the radial brightness profiles. The primary constraint for detecting thermal emission is spatial resolution while a high dynamical range is mandatory to detect scattered light. More precisely, exploring the structure of accretion disks requires interferometers with a spatial resolution of at least 2 mas for an intensity ratio of 100 in the midinfrared, that is, baselines ranging from 100 m to 1 km. Hence, groundbased, spacebased and lunarbased interferometers appear as complementary tools that will provide both the range of baselines and the high dynamical range required to probe the detailed physical structure of circumstellar disks around young stars.

Affiliated with

Also associated with

No associations

Rating

Imaging circumstellar disks around young stars by multi-aperture interferometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Imaging circumstellar disks around young stars by multi-aperture interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging circumstellar disks around young stars by multi-aperture interferometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1114342