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Evidence for non-isotropic mass loss from central stars of some emission nebulae

Published online by Cambridge University Press:  14 August 2015

Paris Pişmiş*
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México

Extract

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In our general program of research on the velocity field of emission nebulae, using the photographic Fabry-Pérot technique, we have included: NGC 6164-5, an H II region with striking symmetry, NGC 2359 a “ring nebula” and Ml-67. The exciting stars in all three are centrally located and are of spectral types 06f (showing P Cygni profiles), WN 5 and WN 8 respectively.

Type
Session 1: Optical Spectroscopy
Copyright
Copyright © Reidel 1979 

References

Pişmiş, P.: 1974, Rev. Mexicana Astron. Astrof., 1, 45.Google Scholar
Pişmiş, P., Recillas-Cruz, E., Hasse, I.: 1977, Rev. Mexicana Astron. Astrof., 2, 209.Google Scholar
Pişmiş, P., Recillas-Cruz, E.: 1977, B.A.A.S., 9, 601.Google Scholar