Methanol 72 81A+ emission and some maser series in Orion KL

Details Methanol 72 81A+ emission and some maser series in Orion KL Methanol 72 81A+ emission and some maser series in Orion KL

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.243..363z&link_type=abstract

Astrophysics and Space Science, Volume 243, Issue 2, pp.363-369

Astronomy and Astrophysics

Astrophysics

Scientific paper

Methanol 72 81 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 ofJ 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 methanolJ 2-J 1 E (J=6,7) and 80 71 A + are distributed in the northeast part of the contour plot of 72 81 A +. The physical conditions of the regions of maser seriesJ 0-(J-1)1 A + (J=7,8,9) are discussed. Also from the calculation results another maser seriesJ 1-(J-1)2 A - (J=10,11,12) that might coexist with maser seriesJ 2-J 1 E, is found. The sizes of the 2-dimension Gaussian fit plots of methanol 72 81 A + and HCOOCH3 10(0,10) 9(0,9)A are almost the same, and the main parts overlap each other.

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