Observations of Bipolar and Compact HII Regions

Details Observations of Bipolar and Compact HII Regions Observations of Bipolar and Compact HII Regions

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982msngr..29...15n&link_type=abstract

The Messenger, No.29, P. 15, 1982

Astronomy and Astrophysics

Astrophysics

Scientific paper

Several investigations carried out during the last years at the Max Planck Institute for Astronomy in Heidelberg have dealt with the bipolar compact H 11 region S 106. The essential structural features of this object are: (i) There is only a single exciting star in the centre of the nebula, (ii) this star is surrounded by a disk of dust that we are seeing edge on. This disk of dust divides the nebula into two "lobes". It causes a visual extinction of the central star of about 20 magnitudes, for which reason it can be photographed only at infrared wavelengths (Eiroa, C., Elsässer, H., and Lahulla, J. F. 1979, Astronomy and Astrophysics 74, 89), whereas the light of the central star can get through the disk in the perpendicular direction. A digitized near infrared photograph of S 106 taken by Elsässer and Birkle with the 1.23 m telescope of Calar Alto is shown in Fig. 1.

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