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- W2040364608 abstract "view Abstract Citations (41) References (30) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS IRAS Surface Brightness Maps of Reflection Nebulae in the Pleiades Castelaz, Michael W. ; Sellgren, K. ; Werner, M. W. Abstract Surface brightness maps at 12, 25, 60, and 100 microns were made of a 2.5 deg x 2.5 deg area of the reflection nebulae in the Pleiades by coadding IRAS scans of this region. Emission is seen surrounding 17 Tau, 20 Tau, 23 Tau, and 25 Tau in all four bands, coextensive with the visible reflection nebulosity, and extending as far as 30 arcminutes from the illuminating stars. The infrared energy distributions of the nebulae peak in the 100 micron band, but up to 40 percent of the total infrared power lies in the 12 and 25 micron bands. The brightness of the 12 and 25 micron emission and the absence of temperature gradients at these wavelengths are inconsistent with the predictions of equilibrium thermal emission models. The emission at these wavelengths appears to be the result of micron nonequilibrium emission from very small grains, or from molecules consisting of 10-100 carbon atoms, which have been excited by ultraviolet radiation from the illuminating stars. Publication: The Astrophysical Journal Pub Date: February 1987 DOI: 10.1086/165024 Bibcode: 1987ApJ...313..853C Keywords: Astronomical Maps; Brightness Distribution; Infrared Astronomy; Pleiades Cluster; Reflection Nebulae; Star Clusters; Emission Spectra; Energy Distribution; Infrared Astronomy Satellite; Spaceborne Astronomy; Astronomy; CLUSTERS: OPEN; INFRARED: SOURCES; NEBULAE: REFLECTION full text sources ADS | data products SIMBAD (7)" @default.
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- W2040364608 date "1987-02-01" @default.
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- W2040364608 title "IRAS surface brightness maps of reflection nebulae in the Pleiades" @default.
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