A Catalog of MIPSGAL Disk and Ring Sources
AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
Pagination or Media Count:
We present a catalog of 416 extended, resolved, disk and ringlike objects as detected in the MIPSGAL 24 micron survey of the Galactic plane. This catalog is the result of a search in the MIPSGAL image data for generally circularly symmetric, extended bubbles without prior knowledge or expectation of their physical nature. Most of the objects have no extended counterpart at 8 microns or 70 microns with less than 20 detections at each wavelength. For the 54 objects with central point sources, the sources are nearly always seen in all Infrared Array Camera bands. About 70 objects 16 have been previously identified. with another 35 listed as Infrared Astronomical Satellite sources. Among the identified objects, those with central sources are mostly listed as emission-line stars, but with other source types including supernova remnants SNRs, luminous blue variables, and planetary nebulae PNe. The 57 identified objects of 362 without central sources are nearly all PNe approximately 90, which suggests that a large fraction of the 300 unidentified objects in this category are also PNe. These identifications suggest that this is primarily a catalog of evolved stars. Also included in the catalog are two filamentary objects that are almost certainly SNRs, and 10 unusual compact extended objects discovered in the search. Two of these show remarkable spiral structure at both 8 microns and 24 microns. These are likely background galaxies previously hidden by the intervening Galactic plane.
- Celestial Mechanics