Up: High-velocity interstellar clouds towards
We have presented low resolution spectra of the sightlines towards the M 15
globular cluster in both the Caii K and Nai D interstellar
lines, and have identified high-velocity clouds with
velocities between
. The present data suggest that velocity
and equivalent width variations may exist on small scales, but higher quality
data are necessary to confirm this. Together with higher quality absorption
line observations, high resolution Hi maps of the region would provide
detailed information on the substructure and size distribution of cloudlets
within the HVCs.
Acknowledgements
NL holds a postgraduate studenship from the European Social Fund and Northern
Ireland Development for Research. WRJR and RSIR acknowledge financial support
from the UK Particle and Astronomy Research Council.
Up: High-velocity interstellar clouds towards
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