The circumstellar envelope of VX Sgr

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1992 English Publisher:Springer Science and Business Media LLCJournal:Astrophysics and Space Science, volume 192, pages 53-62 (issn: 0004-640X, eissn: 1572-946X,

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Authors: Yu Zhiyao;

doi: 10.1007/bf00653259

The circumstellar envelope of VX Sgr

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Abstract

By use of the data for VLBI observation of SiO masrs, and MERLIN observation of H2O and OH masers of VX Sgr, we found that the SiO, H2O, OH 1665/7, OH 1612 masers occur on a few separated shells, and the order of magnitude of the radii of their corresponding shells is 1014, 1015, 1016 cm, respectively. The field of the expanding velocity of the shells is obtained. It is important to note ice-layer covers on the surface of dust and grain for outlayer envelopes.

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Academia Sinica
Taiwan

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