The Indirect Detection of Liquid Water in Extrasolar Protoplanetary Disks
Terzolo, Anthony J.
Morris, Melissa A.
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Phyllosilicates are hydrous minerals that form through the interaction of rock and liquid water. Phyllosilicates are found in abundance in certain types of meteorites originating from the asteroid belt, providing evidence for liquid water in the early Solar System. Most phyllosilicates show a distinct emission in the mid-infrared (MIR) portion of the electromagnetic spectrum, and can be detected in extrasolar disks . We have examined the observed spectra of several candidate extrasolar planetary systems, and have found the signature of phyllosilicates in the extrasolar disk of 1RXS J161410.6-230542. The detection of phyllosilicates in this disk would indicate the presence of liquid water and suggest a similarity to our own Solar System. We present the comparison of our model spectral energy distributions (SEDs) of the protoplanetary disk 1RXS J1614.6-2320542 to observations obtained by the Spitzer Space Telescope.