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| Paper: |
Innovative Imaging of Young Stars: First Light ExPo Observations |
| Volume: |
448, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun |
| Page: |
15 |
| Authors: |
Jeffers, S. V.; Canovas, H.; Keller, C. U.; Min, M.; Rodenhuis, M. |
| Abstract: |
We have developed an innovative imaging polariemter, ExPo, that
excels in the imaging of the circumstellar environments of young
stars. The basic physics that ExPo exploits is that starlight
reflected from a star's circumstellar environment becomes linearly
polarised, making it easily separable from unpolarised starlight. Our
preliminary results, from the William Herschel Telescope in La Palma,
show that ExPo has successfully detected several known protoplanetary
disks out to a much larger distance and at a finer resolution than
previously observed. ExPo has also made a significant number of new
detections of protoplanetary disks and stellar outflows. We use
innovative data analysis techniques, related to speckle
interferometry, to detect the innermost parts of the disk to much
closer than any other techniques operating at visible wavelengths. In
this paper I present highlights of ExPo's first light observations. |
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