The Lx-T Scaling Relation of Low Lx Genuine Elliptical Galaxies

We propose to observe five Xrayfaint genuine elliptical galaxies (for 150ksec). The observed tight correlation between Lx and T for a small sample of Egalaxies suggests that the retention of hot gas (potential depth) and thebalance between heating and cooling is closely regulated. The available datasuggest that the tight relation may extend down to log(Lx)virgul38.5. However,theoretical predictions and numerical simulations suggest that the gas is in anoutflow/wind state at these Lx, predicting an end to the correlation. We proposeto constrain observationally the LxT relation at the lowest Lx to test the mostsubstantial effect of the baryonic physics and provide the necessaryconfirmation of feedback recipes or the need for their corrections. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]