| Issue |
A&A
Volume 455, Number 1, August III 2006
|
|
|---|---|---|
| Page(s) | 131 - 134 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20054219 | |
| Published online | 31 July 2006 | |
3D spectroscopy with VLT/GIRAFFE
III. Mapping electron densities in distant galaxies
1
Laboratoire Galaxies Etoiles Physique et Instrumentation, Observatoire de Paris, 5 place Jules Janssen, 92195 Meudon, France e-mail: mathieu.puech@obspm.fr
2
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching bei München, Germany
Received:
16
September
2005
Accepted:
17
January
2006
We used the moderately high spectral resolution of
FLAMES/GIRAFFE (
) to derive electron densities from [OII]
line ratios in 6 galaxies at 
. These measurements
have been done through the GIRAFFE multiple integral field units
and are the very first mapping of electron densities in
such distant objects. This allows us to confirm an outflow and
identify the role of giant HII regions in galactic disks. Such
measurements could be used in the future to investigate the
nature of the physical processes responsible for the high star
formations rates observed in galaxies between 
and
.
Key words: galaxies: kinematics and dynamics / galaxies: ISM
© ESO, 2006
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