Near Infrared Imaging of G29.29-0.02

Session 42 - Molecular Clouds: Models and Observations.
Display session, Tuesday, June 11
Great Hall,

[42.07] Near Infrared Imaging of G29.29-0.02

A. Coil (Princeton U.), A. M. Watson (NMSU), D. S. Shepherd (U. Wisconsin, Madison), E. B. Churchwell (U. Wisconsin, Madison), P. Hofner (U. zu Köln)

We present near infrared images of the cometary ultracompact HII region G29.29-0.02. From the ratio of Br\gamma to 1.3cm flux we estimate the extinction to be A_K = 2.2 \pm 0.1, and this allows us to unambiguously identify the ionizing star. We measure a projected separation of 2.8 arcsec between the ionizing star and the putative bow shock. Puzzlingly, the ionizing star appears to be somewhat more luminous at K than expected for a main-sequence O star, but it does not appear to have an infrared excess. Our data strengthen a previous suggestion that the ultracompact HII region is associated with a cluster of young stars.

Program listing for Tuesday