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Methanol 7(2)-8(1)A(+) emission and some maser series in Orion KL
Zeng, Q
1996
Source PublicationAstrophysics and Space Science
ISSN0004-640X
Volume243Issue:2Pages:363—369
AbstractMethanol 7(2) - 8(1)A(+) is mapped for the first time in Orion KL. Analysing the observed data and solving the statistical equilibrium and radiative transfer equations, it is concluded that line series of J(2) - (J + 1)(1)A(+) (J = 7, 8, 9) is in quasi-thermal emission rather than the masers in Orion KL. The maser spots of methanol J(2) - J(1)E (J = 6, 7) and 8(0) - 7(1)A(+) are distributed in the northeast part of the contour plot of 7(2) - 8(1)A(+). The physical conditions of the regions of maser series J(0) - (J - 1)(1)A(+) (J = 7, 8, 9) are discussed. Also from the calculation results another maser series J(1) - (J - 1)(2)A(-) (J = 10, 11, 12) that might coexist with maser series J(2) - J(1)E, is found. The sizes of the 2-dimension Gaussian fit plots of methanol 7(2) - 8(1)A(+) and HCOOCH3 10(0, 10) - 9(0, 9)A are almost the same, and the main parts overlap each other.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8467
Collection期刊(老文献)
Recommended Citation
GB/T 7714
Zeng, Q. Methanol 7(2)-8(1)A(+) emission and some maser series in Orion KL[J]. Astrophysics and Space Science,1996,243(2):363—369.
APA Zeng, Q.(1996).Methanol 7(2)-8(1)A(+) emission and some maser series in Orion KL.Astrophysics and Space Science,243(2),363—369.
MLA Zeng, Q."Methanol 7(2)-8(1)A(+) emission and some maser series in Orion KL".Astrophysics and Space Science 243.2(1996):363—369.
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