Multiple Outflows in the Biolar Planetary Nebula M1-16: A Molecular Line Study
Extensive observations of the molecular gas in the young, compact planetary nebula M1-16 ahve been made, using the Swedish-ESO-Submillimeter Telescope.
M1-16 nebula↗
Engineering topics
Schwarz, H. E.
Publications and source records attributed to Schwarz, H. E..
A polarimetric survey of symbiotic stars
Optical and near-infrared polarization observations of 24 symbiotic stars, 14 observed with polarimetry for the first time are presented. In combination with published data, it is found that about 50 percent of the symbiotics observed polarimetrically show evidence for intrinsic polarization. The results are discussed in the light of previous observations, and comments are made on the temporal variability and wavelength dependence of the polarization. Dust scattering is identified as the dominant mechanism producing polarization in symbiotic stars. While it cannot be excluded that some symbiotic systems are completely engulfed in their dust shells, the data indicate that the H-alpha emission line may originate from outside of the dust-scattering envelopes in some systems.
Schulte-Ladbeck, R. E.↗