A New Galactic 6cm Formaldehyde Maser

Details A New Galactic 6cm Formaldehyde Maser A New Galactic 6cm Formaldehyde Maser

2006-04-17

arxiv.org/abs/astro-ph/0604350v1

Astrophys.J. 643 (2006) L33-L36

Astronomy and Astrophysics

Astrophysics

Accepted for publication in The Astrophysical Journal Letters

Scientific paper

10.1086/504840

We report the detection of a new H2CO maser in the massive star forming region G23.71-0.20 (IRAS 18324-0820), i.e., the fifth region in the Galaxy where H2CO maser emission has been found. The new H2CO maser is located toward a compact HII region, and is coincident in velocity and position with 6.7 GHz methanol masers and with an IR source as revealed by Spitzer/IRAC GLIMPSE data. The coincidence with an IR source and 6.7 GHz methanol masers suggests that the maser is in close proximity to an embedded massive protostar. Thus, the detection of H2CO maser emission toward G23.71-0.20 supports the trend that H2CO 6cm masers trace molecular material very near young massive stellar objects.

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