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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Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 80, No. 4, 2003, pp. 357–363.
Original Russian Text Copyright © 2003 by Lekht, Richards.
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Lekht, E.E., Richards, A.M.S. Triplet spectra of H2O masers and protoplanetary disks. Astron. Rep. 47, 326–332 (2003). https://doi.org/10.1134/1.1568136
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DOI: https://doi.org/10.1134/1.1568136