2006/11/17 by James M. De Buizer · 4 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Bipolar outflow #Cluster (spacecraft) #Infrared #Maser #Outflow #Protostar #Stellar, planetary, and galactic studies #Thermal emission #Wavelength #Young stellar object #astro-ph
paper · pdf · doi:10.1086/511263
To appear in ApJ Letters, version with full resolution figures available at http://www.ctio.noao.edu/~debuizer
arxiv created 2006/11/17 · openalex publication_date 2006/12/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The mid-infrared emission at the center of IRAS 21026+4104 is not that of a simple compact source, as one would expect from an isolated high-mass protostellar object. Furthermore, the central thermal infrared emission does not appear to be coming directly from a circumstellar disk as has been recently hypothesized from near-infrared observations. The mid-infrared structure is complex, but with the help of multiple-wavelength information two plausible scenarios to explain the emission in the region are advanced. The first is that there is a tight cluster of young stellar objects here. The second is that the mid-infrared emission and masers are delineating the walls of the outflow cavities of a massive stellar source located in the center of the near- and mid-infrared dark lane.