Astrophysics and Space Science

, Volume 13, Issue 1, pp 110–127 | Cite as

Observations of high velocities inHii regions with a two-etalon Fabry-Pérot spectrometer

  • J. Meaburn


High internal motions of the ionized material in theHii regions M 8, M16, M 17 and the Orion Nebula were searched for with a two-etalon Fabry-Perot monochromotor. The profiles of the [Oiii], 5007 Å and in one case the 4959 Å line were obtained at many positions from these nebulae. Non-gaussian wings of up to −60 km/s were found on the profiles from M 17 and M 16 over regions several minutes across. Line doubling of up to 20 km/s was definitely found in M17 and M 8. Small components with radial velocities of up to −55 km/s with respect to the means were suspected in M 8 and the Orion Nebula.


High Velocity Radial Velocity Small Component Internal Motion Line Doubling 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© D. Reidel Publishing Company 1971

Authors and Affiliations

  • J. Meaburn
    • 1
  1. 1.Dept. of AstronomyUniversity of ManchesterEngland

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