A Search for H2CO 6cm Emission toward Young Stellar Objects III: VLA Observations
E. D. Araya (1, 2, 3), P. Hofner (2,3), W. M. Goss (2), H. Linz (4),, S. Kurtz (5), L. Olmi (6,7) ((1) University of New Mexico, Albuquerque, USA,, (2) National Radio Astronomy Observatory, Socorro, USA, (3) New Mexico, Institute of Mining, Technology, Socorro, USA
TL;DR
This paper reports the discovery of two new formaldehyde (H2CO) 6cm maser sources in the Galaxy using VLA observations, expanding the known sample and analyzing their association with young stellar objects.
Contribution
First detection of H2CO masers in G23.01-0.41 and G25.83-0.18, increasing the known Galactic sample and characterizing their properties.
Findings
Discovered two new H2CO maser sources.
H2CO masers are associated with very young massive stars.
Maser environments are rich and close to star-forming regions.
Abstract
We report the results of our third survey for formaldehyde (H2CO) 6cm maser emission in the Galaxy. Using the Very Large Array, we detected two new H2CO maser sources (G23.01-0.41 and G25.83-0.18), thus increasing the sample of known H2CO maser regions in the Galaxy to seven. We review the characteristics of the G23.01-0.41 and G25.83-0.18 star forming regions. The H2CO masers in G23.01-0.41 and G25.83-0.18 share several properties with the other known H2CO masers, in particular, emission from rich maser environments and close proximity to very young massive stellar objects.
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