High-resolution, far-infrared observations of NGC 2071

Details High-resolution, far-infrared observations of NGC 2071 High-resolution, far-infrared observations of NGC 2071

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364..164b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 364, Nov. 20, 1990, p. 164-172. Research supported by ASI.

Astronomy and Astrophysics

Astronomy

75

Far Infrared Radiation, Infrared Sources (Astronomy), Reflection Nebulae, Astronomical Models, Cosmic Dust, Density Distribution, Luminosity, Radiative Transfer, Temperature Distribution

Scientific paper

The far-IR emission of the visible reflection nebula NGC 2071 has been resolved at both 50 and 100 microns along several directions. The observations reveal an extended, roughly spherical source with an average source diameter of about 12 arcsec or 4700 AU at 50 microns and about 16 arcsec or 6200 AU at 100 microns. The source is modeled using a radiative transport code to match scans of the source and previous photometry. The luminosity of the source is 520 solar at a distance of 390 pc. The optical depth at 100 microns is 0.20, implying a mass of 1.2-10 solar within a radius of 5900 AU. The density gradient is in good agreement with theoretical models for infalling envelopes around protostars and in reasonable agreement with other observational determinations.

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