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          Document History for Document ID 276865

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Document Version Version Comment Date Status
276865.0 [No comment] 28.05.2018 16:41 Released

ID: 276865.0, MPI für Astronomie / Publikationen_mpia
Discovery of an H2CO 6 centimeter maser in IRAS 18566+0408
Authors:Araya, E.; Hofner, P.; Kurtz, S.; Linz, H.; Olmi, L.; Sewilo, M.; Watson, C.; Churchwell, E.
Date of Publication (YYYY-MM-DD):2005
Title of Journal:The Astrophysical Journal
Journal Abbrev.:The Astrophysical Journal
Volume:618
Start Page:339
End Page:343
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report VLA observations toward IRAS 18566+0408 conducted to determine the nature of the H2CO 6 cm emission line recently detected by Araya and coworkers. Our observations clearly show that the H2CO source is due to maser emission, making IRAS 18566+0408 only the fourth Galactic H2CO 6 cm maser source, out of five known H2CO emitters. We also report detection of a weak 2 cm continuum source that is coincident with the H2CO maser. Given the current observational constraints, the maser could be due to the radiative pumping mechanism proposed by Boland & de Jong; however, the coincidence of the new H2CO maser with 22 GHz H2O masers suggests that shocked molecular gas could also play a role in its excitation.
Free Keywords:ISM: H II Regions; ISM: Molecules; Masers; Radio Lines: ISM; Stars: Formation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph- bib_query?b... [ID No:1]