We investigate the presence of extended ionized outflows in 18 luminous type 2 AGNs ( 11 quasars and 7 high luminosity Seyfert 2s ) at 0.3 < z < 0.6 based on VLT-FORS2 spectroscopy .
We infer typical lower limits on the radial sizes of the outflows R _ { o } \ga several \times 100 pc and upper limits R _ { o } \la 1-2 kpc .
Our results are inconsistent with related studies which suggest that large scale ( R _ { o } \sim several-15 kpc ) are ubiquitous in QSO2 .
We study the possible causes of discrepancy and propose that seeing smearing is the cause of the large inferred sizes .
The implications in our understanding of the feedback phenomenon are important since the mass M _ { o } ( through the density ) , mass injection \dot { M } _ { o } and energy injection \dot { E } _ { o } rates of the outflows become highly uncertain .
One conclusion seems unavoidable : M _ { o } , \dot { M } _ { o } and \dot { E } _ { o } are modest or low compared with previous estimations .
We obtain typically M _ { o } \la ( 0.4-22 ) \times 10 ^ { 6 } M _ { \odot } ( median 1.1 \times 10 ^ { 6 } M _ { \odot } ) assuming n = 1000 cm ^ { -3 } .
These are \sim 10 ^ { 2 } -10 ^ { 4 } times lower than values reported in the literature .
Even under the most favorable assumptions , we obtain \dot { M } _ { o } \la 10 M _ { \odot } yr ^ { -1 } in general , 100-1000 times lower than claimed in related studies .
Although the uncertainties are large , it is probable that these are lower than typical star forming rates .
In conclusion , no evidence is found supporting that typical outflows can affect the interstellar medium of the host galaxies accross spatial scales \ga 1-2 kpc .