Hot Gas and Outflows of Nearby Normal Galaxies. Q. Daniel Wang (UMass). Most of present galaxies are not nuclear starbursters Phenomena that would be otherwise overwhelmed Disk/halo interaction Bulge wind driven by Type Ia SNe Accretion from the IGM
Q. Daniel Wang (UMass)
Subtle, but enduring strongly affect the evolution of galaxies
Yao & Wang 2005
Wang et al. 2005
Also detection of OVII K, K,and OVIII K lines
Mean T ~ 106.3+/-0.2 K
(assuming filling factor =1)
nH = 5.0(-1.8,+2.6)x10-3 cm-3exp[-|z|/1.2(-0.5,+0.7) kpc]
Total NH~1.6 x1019 cm-2
X-ray absorption is primarily around the Galactic disk within a few kpc!
Red – optical
Green – 0.3-1.5 keV band
Blue – 1.5-7 keV band
Wang et al. 2003
ACIS-S 0.3-1.5 keV intensity contours
Diffuse 0.3-1.5 keV intensity contours
~ 1.3 Msun/yr
Gone with the wind!
Li & Wang 2004
Consistent with the expected total mass loss and SN rates as well as the Fe abundance of ~ 4 x solar!
NGC 3379: ram-pressure confined galactic wind?