UKIRT observations of the mid-infrared and submillimetre thermal continuum in W75N

Details UKIRT observations of the mid-infrared and submillimetre thermal continuum in W75N UKIRT observations of the mid-infrared and submillimetre thermal continuum in W75N

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248...79m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Jan. 1, 1991, p. 79-85.

Astronomy and Astrophysics

Astronomy

17

Continuous Radiation, Infrared Sources (Astronomy), Interstellar Masers, Star Clusters, Star Formation, Cosmic Dust, Early Stars, Hydroxyl Emission, Stellar Luminosity, Submillimeter Waves, Thermal Radiation

Scientific paper

Maps in the mid-IR and submillimeter thermal continuum are presented for the star-forming region W75N. Observations at 10 and 20 microns, with about 5-arcsec resolution, trace warm (about 100 K) dust heated by members of the embedded young stellar cluster. Of these, the bright near-IR point source IRS-2 appears to be a BN-like object. The OH maser source H II(B) is found to be the principal heating source in the region. Emission from the marginally better studied H II(A) dominates only at mid-infrared wavelengths. The submillimeter continuum emission traces the cool (about 30 K) dust in the cloud core surrounding the luminosity sources. The core has been spatially resolved at 350 microns, but shows no disk-like structure related to the known molecular outflow on scales larger than about 0.2 pc. Both single- and dual-component models of the dust temperature can satisfactorily account for the observed submillimeter emission.

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