Astronomy and Astrophysics – Astronomy
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006pasp..118..774m&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 118, Issue 843, pp. 774-779.
Astronomy and Astrophysics
Astronomy
6
Instrumentation: Miscellaneous, Instrumentation: Polarimeters, Instrumentation: Spectrographs, Techniques: Polarimetric, Techniques: Spectroscopic
Scientific paper
We report the laboratory demonstration of polarization differential objective spectroscopy using a four-quadrant polarization mask coronagraph. The optical setup consists of a liquid crystal polarization modulator, coronagraphic optics, and an objective spectrometer. The experimental results show the detection of not only images but also objective spectra of faint companions. We also show that the proposed technique can be used as a high-contrast spectropolarimeter. It is possible to investigate the atmospheric compositions of exoplanets more clearly by using the proposed method.
Baba Naoshi
Murakami Noriko
Sato Yuzuru
Tamura Masafumi
Tate Youko
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