An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408

Details An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408 An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408

2007-08-28

arxiv.org/abs/0708.3832v1

Astrophys.J.669:1050-1057,2007

Astronomy and Astrophysics

Astrophysics

20 pages, 4 figures, ApJ (in press)

Scientific paper

10.1086/521576

We report observations of 6cm, 3.6cm, 1.3cm, and 7mm radio continuum, conducted with the Very Large Array towards IRAS18566+0408, one of the few sources known to harbor H2CO 6cm maser emission. Our observations reveal that the emission is dominated by an ionized jet at cm wavelengths. Spitzer/IRAC images from GLIMPSE support this interpretation, given the presence of 4.5um excess emission at approximately the same orientation as the cm continuum. The 7mm emission is dominated by thermal dust from a flattened structure almost perpendicular to the ionized jet, thus, the 7mm emission appears to trace a torus associated with a young massive stellar object. The H2CO 6cm maser is coincident with the center of the torus-like structure. Our observations rule out radiative pumping via radio continuum as the excitation mechanism for the H2CO 6cm maser in IRAS18566+0408.

Affiliated with

Also associated with

No associations

Rating

An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An H2CO 6cm Maser Pinpointing a Possible Circumstellar Torus in IRAS18566+0408 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-363327