Near-infrared polarization images of the Orion proplyds
arXiv:0805.0605 · doi:10.1051/0004-6361:20077555
Abstract
We performed AO-assisted high-resolution imaging polarimetry on selected Orion proplyds close to the Trapezium stars in the J, H, and K bands. Differential polarimetric images of one of the largest and brightest proplyds are interpreted using 3D radiation transfer simulations based on the Monte Carlo method. Although not fully resolvable by ground-based observations, the circumstellar material can be mapped with polarimetry. We present constraints on the disk parameters of the giant proplyd 177-341. We tested whether dust models with different grain size distributions could explain the observed extent of the polarization patterns and find that simple models with larger grains will not reproduce the spectral polarization behavior. The technique of polarimetric differential imaging (PDI) in the NIR provides a good opportunity to study the structure of the Orion proplyds.
arXiv comment10 pages, 11 figures, 4 online figures
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- Sequential Star Formation in RCW 34: A Spectroscopic Census of the Stellar Content of High-mass Star-forming Regions
- Protoplanetary Disks in the Orion Nebula Cluster: Gas Disk Morphologies and Kinematics as seen with ALMA
- Ionized gas diagnostics from protoplanetary discs in the Orion Nebula and the abundance discrepancy problem
- Polarized near-infrared light of the Dusty S-cluster Object (DSO/G2) at the Galactic Center