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Hα-Emission in Directions toward High Velocity 21cm Clouds

Published online by Cambridge University Press:  12 April 2016

Guido Münch  and
Eckhart Pitz
Guido Münch
Affiliation:
Max-Planck-Institut für AstronomieKönigstuhl, 6900 Heidelberg, FRG
Eckhart Pitz
Affiliation:
Max-Planck-Institut für AstronomieKönigstuhl, 6900 Heidelberg, FRG

Summary

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Measurements of Hα-emission in fields known to emit 21cm radiation at intermediate and high velocities are presented. The observations are partial results of a survey being carried out at the Calar Alto Observatory with a dedicated Fabry-Perot spectrometer of 15cm aperture, providing velocity and angular resolutions of 11km s-1 and 0.5 deg2. The limited material available indicates that the Hα-emission, when detected at a radial velocity nearly the same as that measured in 21cm, appears more extended in the sky than the HI-radiation.

Type
VI. Interstellar Matter at High Galactic Latitudes
Information
International Astronomical Union Colloquium , Volume 120: Structure and Dynamics of the Interstellar Medium , 1989 , pp. 372 - 382
Copyright
Copyright © Springer-Verlag 1989

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