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41.
Astronomy Reports - The paper describes three methods for constructing synthetic Doppler tomograms. These methods are applied to the results of MHD simulation of the V808 Aur polar, and the... 相似文献
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A. G. Sokol A. N. Kruk D. A. Chebotarev Yu. N. Palyanov N. V. Sobolev 《Doklady Earth Sciences》2015,465(2):1262-1267
Study of the mechanism of carbonation and wehrlitization of harzburgite upon metasomatism by carbonatitic melts of various genesis was carried out. Experiments with durations of 60–150 h were performed at 6.3 GPa and 1200°C. The data showed that carbonatite with MgO/CaO > 0.3 percolating into the peridotitic lithosphere may provide crystallization of magnesite in it. The influence of all studied carbonatites results in wehrlitization of peridotite. The compositions of melts formed by interaction with harzburgite (~2 wt % SiO2, Ca# = 36–47) practically do not depend on the composition of the initial carbonatite. Based on the data obtained, we conclude that the formation of magnesite-bearing and magnesite-free metasomatized peridotites may have a significant influence on the CO2 regime in the further generation of kimberlitic magmas of groups I and II. 相似文献
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Nikolay Bonev Peter Marchev Robert Moritz Petyo Filipov 《International Journal of Earth Sciences》2015,104(7):1837-1864
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Astronomical Council, USSR Academy of Sciences; Urals State University. Translated from Astrofizika, Vol. 28, No. 2, pp. 405–417, March–April, 1988. 相似文献
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V. V. Sobolev 《Astrophysics》1966,2(3):119-123
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Andrei M. Sobolev Edmund C. Sutton Dinah M. Cragg Peter D. Godfrey 《Astrophysics and Space Science》2005,295(1-2):189-196
In studies of the environment of massive young stellar objects, recent progress in both observations and theory allows a unified treatment of data for maser and quasi-thermal lines. Interferometric maser images provide information on the distribution and kinematics of masing gas on small spatial scales. Observations of multiple masing transitions provide constraints on the physical parameters.Interferometric data on quasi-thermal molecular lines permits an investigation of the overall distribution and kinematics of the molecular gas in the vicinity of young stellar objects, including those which are deeply embedded. Using multiple transitions of different molecules, one can obtain good constraints on the physical and chemical parameters. Combining these data enables the construction of unified models, which take into account spatial scales differing by orders of magnitude.Here, we present such a combined analysis of the environment around the ultracompact HII region in W3(OH). This includes the structure of the methanol masing region, physical structure of the near vicinity of W3(OH), detection of new masers in the large-scale shock front and embedded sources in the vicinity of the TW young stellar object. 相似文献