Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-Wavelength Imaging of Young Stellar Object Disks: Toward an
  Understanding of Disk Structure and Dust Evolution   We review recent progress in high-resolution imaging of scattered light from
disks around young stellar objects. Many new disks have been discovered or
imaged in scattered light, and improved instrumentation and observing
techniques have led to better disk images at optical, near-infrared, and
thermal-infrared wavelengths. Multi-wavelength datasets are particularly
valuable, as dust particle properties have wavelength dependencies. Modeling
the changes in scattered-light images with wavelength gives direct information
on the dust properties. This has now been done for several different disks. The
results indicate that modest grain growth has taken place in some of these
systems. Scattered-light images also provide useful constraints on the disk
structure, especially when combined with long-wavelength SEDs. There are
tentative suggestions in some disks that the dust may have begun to settle. The
next few years should see this work extended to many more disks; this will
clarify our understanding of the evolution of protoplanetary dust and disks.

11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs