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Title:
A review of H2CO 6cm masers in the Galaxy
Authors:
Araya, E.; Hofner, P.; Goss, W. M.
Affiliation:
AA(National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801, USA; New Mexico Institute of Mining and Technology, Physics Department, 801 Leroy Place, Socorro, NM 87801, USA ), AB(National Radio Astronomy Observatory, P.O. Box 0, Socorro, NM 87801, USA; New Mexico Institute of Mining and Technology, Physics Department, 801 Leroy Place, Socorro, NM 87801, USA ), AC(New Mexico Institute of Mining and Technology, Physics Department, 801 Leroy Place, Socorro, NM 87801, USA )
Publication:
Astrophysical Masers and their Environments, Proceedings of the International Astronomical Union, IAU Symposium, Volume 242, p. 110-119
Publication Date:
03/2007
Origin:
CUP
Keywords:
masers, stars: formation, ISM: molecules, HII regions, radio lines: ISM
DOI:
10.1017/S1743921307012653
Bibliographic Code:
2007IAUS..242..110A

Abstract

We present a review of the field of formaldehyde (H2CO) 6cm masers in the Galaxy. Previous to our ongoing work, H2CO 6cm masers had been detected in the Galaxy only toward three regions: NGC7538 IRS1, Sgr B2, and G29.96 0.02. Current efforts by our group using the Very Large Array, Arecibo, and the Green Bank Telescope have resulted in the detection of four new H2CO 6cm maser regions. We discuss the characteristics of the known H2CO masers and the association of H2CO 6cm masers with very young regions of massive star formation. We also review the current ideas on the pumping mechanism for H2CO 6cm masers.
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