Method to reconstruct exoplanetary spectrum.
We present a method for spectroscopic observations of exoplanets. Coronagraphic image of a star-planet system and its objective spectra are observed simultaneously. Stellar image and objective spectrum without coronagraphic suppression are also obtained as reference. By convolution of the coronagraphic image with the reference stellar spectrum, pseudo-objective spectra are synthesized. The difference between the observed and the synthesized pseudospectra reveals the distinctive features of planetary spectrum. We carry out laboratory demonstration of the proposed technique and show that the planetary spectrum is reconstructed.
Zubko
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Division of Applied Physics, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan. nzubko@eng.hokudai.ac.jp
Baba
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Shibuya
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Murakami
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