Thermal infrared imaging of subarcsecond structure in the trapezium nebula

Details Thermal infrared imaging of subarcsecond structure in the trapezium nebula Thermal infrared imaging of subarcsecond structure in the trapezium nebula

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...433..157h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 433, no. 1, p. 157-163

Astronomy and Astrophysics

Astronomy

26

H Ii Regions, Infrared Astronomy, Infrared Imagery, Infrared Spectra, Interstellar Matter, Molecular Clouds, Orion Nebula, Astronomical Photometry, Cosmic Dust, Infrared Photometry, Radiation Pressure, Silicates, Stellar Winds

Scientific paper

We present 11.7 and 8.8 micron images of the central region of the Ney-Allen Nebula In Orion which reveal mid-infrared counterparts to the ionized globules previously discovered by optical and radio observations. The 0.5 arcsec full width at half maximum (FWHM) resolution images also reveal several arc-shaped structures which are associated with the compact sources. Each of the arcs points toward theta1 Ori C, providing further evidence for the strong-effects of the intense radiation and wind from this star on the central Orion Nebula. Low-resolution spectra of a few of these condensations and arcs are similar to spectra of the diffuse, optically thin silicate dust observed throughout the region. Photometry of one of the condensations, however, indicates that is cooler than the others. Simple momentum-balance arguments indicate that dust in the arcs could originate in the outflow from the compact sources and flow outward until stopped by the stellar wind and radiation pressure from theta1 Ori C.

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