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A Model for the Maser Source NGC 7538 IRS 1

Published online by Cambridge University Press:  07 August 2017

Preethi Pratap ,
Lewis E. Snyder  and
Wolfgang Batrla
Preethi Pratap
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, Massachusetts 02138
Lewis E. Snyder
Affiliation:
University of Illinois, Astronomy Dept., 1002 W. Green St., Urbana, Illinois 61801
Wolfgang Batrla
Affiliation:
Fachhochschule Coburg, Abteiling Muenchberg, Kulmbacher Str. 76, D-8660 Muenchberg, Germany

Abstract

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High resolution observations of the molecular cloud around NGC 7538 IRS 1 in the J=1-0 transition of 13CO show that the lower bound for density in that region is about 2 × 103 cm−3. The study of various molecular transitions and the continuum measurements of the H II region indicate that the conditions required by the Boland and de Jong model for the excitation of the H2CO maser are not very stringent or unique.

Type
Chemistry of Interface Regions
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 347 - 348
Copyright
Copyright © Kluwer 1992 

References

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