Triplet spectra of H2O masers and protoplanetary disks |
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| Authors: | E. E. Lekht A. M. S. Richards |
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| Affiliation: | (1) Instituto Nacional de Astrofisica, óptica y Electrónica, Luis Enrique Erro No. 1, Apdo Postal 51 y 216, Tonantzintla, Puebla, 72840, Mexico;(2) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119992, Russia;(3) Jodrell Bank Observatory, Macclesfield, Cheshire, SK11 9DL, UK |
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| Abstract: | ![]()
An analysis of the H2O maser emission associated with protoplanetary disks is presented. Triplet H2O spectra can be formed at certain stages in the evolution of Keplerian disks. The dependence of the mass of the central star in the Keplerian disk on the disk radius is derived. The calculations are based on the distribution of the water-vapor molecules (maser spots). In S140, the observed elongated maser spots (chains) with a smoothly varying line-of-sight velocity are interpreted as protoplanetary structures with a small intrinsic rotation. |
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