Paper:	Chemical Reactions in Protoplanetary Disks and Possibility of Detecting H2O Snowline Using Spectroscopic Observations with ALMA
Volume:	499, Revolution in Astronomy with ALMA: The Third Year
Page:	289
Authors:	Notsu, S.; Nomura, H.; Ishimoto, D.; Walsh, C.; Honda, M.; Millar, T. J.
Abstract:	We calculate chemical reactions and obtain abundance distribution of H2O gas. We confirm that the abundance of H2O is high not only in the region inside H2O snowline near the equatorial plane but also in the hot surface layer of outer disk. We also calculate velocity profiles of H2O emission lines, and find that we can obtain the information of H2O snowline through investigating the profiles of some line transitions that have small Einstein A coefficient and large excitation energy. Some useful H2O emission lines exist at sub-millimeter wavelength and are observable with ALMA.

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