Abstract
view Abstract Citations (39) References (25) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Near-infrared spectrophotometry of polarized compact infrared sources Joyce, R. R. ; Simon, T. Abstract 2-4 micron spectrophotometry of polarized compact infrared sources associated with dense molecular clouds has been obtained. Deep ice absorption bands at 3.1 micron appear in the most highly polarized sources, whereas shallow absorption bands predominate in the weakly polarized objects. These observations suggest that the presence of ice grains may be a necessary condition for strong polarization in young OB stars embedded in molecular clouds. If the observed infrared polarization is produced by magnetically aligned core-mantle grains having a weakly ferromagnetic metallic oxide core and an ice mantle, rather than by paramagnetic silicate grains, the magnetic field strengths required to align the grains may be 5-10 times weaker than fields previously derived for the Orion Molecular Cloud. Publication: The Astrophysical Journal Pub Date: September 1982 DOI: 10.1086/160282 Bibcode: 1982ApJ...260..604J Keywords: Infrared Astronomy; Interstellar Matter; Molecular Clouds; Near Infrared Radiation; Polarized Electromagnetic Radiation; Absorption Spectra; Cosmic Dust; Ice; Infrared Spectra; Metal Oxides; Spectrophotometry; Astrophysics full text sources ADS |
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