A MEASUREMENT OF THE 0.3-30 KEV SPECTRUM OF THE LOW-METALLICITY GALAXY VV114

We propose for a 30 ks XMM and 200 ks NuSTAR observation of VV114, a uniquelowmetallicity galaxy (0.3 Zsol), with highSFR (SFR 38 Msol/yr). We willmeasure ho the shape and normalization of the 0.330 keV spectral energydistribution of VV114 compares with more typical solarmetallicity galaxies inthe nearby Universe that have SEDs characterized by NuSTAR (e.g., M83, NGC 253,NGC 3256, and NGC 3310). Our observations will provide an important benchmarkfor how the Xray SED varies with metallicity, and thus how the Xray SEDs ofgalaxies are expected to vary with redshift. This will allow for more informedbandpass and bolometric corrections to highredshift galaxy studies andpopulation synthesis models, and will inform studies of Xray heating of the early Universe IGM. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]