Dust clumps in the Galactic Plane

DOI

We present imaging observations of continuum emission from interstellar dust at 850 and 1200um of a section of the Galactic Plane covering 2deg^2^ centered at l=44{deg}. Complementary jiggle-mapping and fast-scanning techniques were used, respectively, at these two wavelengths. The mapped area includes the well-known star formation regions W49 and G45.1/45.5. Using an automated clump-finding routine, we identify 132 compact 850um emission features within the region above a completeness level of about 200mJy/beam. The positions of the latter objects were used to determine fluxes from the 1200um image. Spectral line data were subsequently obtained with the same observing beamwidth as at 850um for almost half of the objects; these were either imaged in the ^13^CO (3-2) line, or basic characteristics determined using the ^12^CO (3-2) transition. We use these data, supplemented by existing ^13^CO (1-0) and HI survey data, to determine distances and hence derive masses for the dust clump ensemble, assuming a uniform dust temperature of 15K. From these data we find that the number-mass relationship for clumps in the field is similar to that found for individual star-forming regions.

Cone search capability for table J/AJ/138/1380/clumps (Clumps identified in the 850um image with distances , masses and sources of emission probably associated with the clumps)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51381380
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/138/1380
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/138/1380
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/138/1380
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/138/1380
Provenance
Creator Matthews H.; Kirk H.; Johnstone D.; Weferling B.; Cohen M.; Jenness T.,Evans A.; Davis G.; Dent W.R.F.; Fuller G.; Jackson J.M.; Rathborne J.,Richer J.; Simon R.
Publisher CDS
Publication Year 2012
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Galactic and extragalactic Astronomy; Interdisciplinary Astronomy; Interstellar medium; Natural Sciences; Observational Astronomy; Physics