Superwind evolution: the young starburst-driven wind galaxy NGC 2782

摘要: We present results from a 30 ksec Chandra observation of the important starburst galaxy NGC 2782, covering 0.3-10keV energy band. find evidence superwind small extent, that is likely in an early stage development. total 27 X-ray point sources within region radius 2$D_{25}$ centre and which are associated with galaxy. Of these, 13 ULXs ($L_{X}\geq 10^{39}~ erg s ^{-1}$) number have counterparts. The luminosities ULX candidates $1.2-3.9\times10^{39}~ ^{-1}$. NGC2782 seems to unusually large ULXs. Central diffuse emission extending ~ 3kpc nuclear has been detected. also structure south nucleus, coincident H{\alpha} filaments 5 GHz radio source. interpret this as blow-out forming superwind. This bubble luminosity (0.3-10 keV) $5\times10^{39}erg ^{-1}$ (around $15\%$ extended emission), inferred wind mass $1.5\times10^{6}$ M$_\odot$. discuss nature central source NGC2782, conclude it low-luminosity AGN (LLAGN), $L_{X}=6\times10^{40}~erg strong Fe line at 6.4 keV.