Abstract
view Abstract Citations (28) References (5) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The diffuse interstellar features studied in HD 213389 by polarimetry and spectrometry. Martin, P. G. ; Angel, J. R. P. Abstract If the diffuse interstellar features originate in grains which cause interstellar polarization, then a polarization change proportional to the change in optical depth at the features is expected. RD 21389 was chosen as an optimum candidate for a polarization study of the A4430 and A6284 diffuse features, because of its strong interstellar polarization and diffuse features and because of the reported blue emission wing at A4430. Such an emission wing is expected if the diffuse features are associated with the interstellar grains which cause continuous polarization and extinction at optical wavelengths. No polarization structure was found at a level much lower than predicted. Subsequent observations do not show a blue emission wing either. While a consistent explanation of these observations in terms of small, poorly aligned grains is possible, we suggest that a molecular or origin for the features is more attractive. Subject headings: interstellar matter - polarization - stars, individual Publication: The Astrophysical Journal Pub Date: January 1975 DOI: 10.1086/153335 Bibcode: 1975ApJ...195..379M Keywords: Cosmic Dust; Diffuse Radiation; Interstellar Matter; Polarimetry; Stellar Spectrophotometry; Error Analysis; Luminous Intensity; Optical Polarization; Optical Thickness; Spectral Bands; Stellar Spectra; Astronomy full text sources ADS | data products SIMBAD (3)
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