Normal galaxies: X-ray Normal galaxies: X-ray luminosity function & luminosity function & its evolution its evolution Panayiotis Tzanavaris Panayiotis Tzanavaris (NOA) (NOA) Ioannis Georgantopoulos Ioannis Georgantopoulos (NOA) (NOA) Antonis Georgakakis Antonis Georgakakis (ICL) (ICL) XSurverys06 Cambridge, MA. Nov 2006
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Normal galaxies: X-ray luminosity function & its evolution Panayiotis Tzanavaris (NOA) Ioannis Georgantopoulos (NOA) Antonis Georgakakis (ICL) XSurverys06.
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Normal galaxies: X-ray Normal galaxies: X-ray luminosity function & its luminosity function & its
Unique probe of X-ray binaries and hot Unique probe of X-ray binaries and hot gas in (non-AGN) gas in (non-AGN) normal normal galaxiesgalaxies
Disentangle NG evolution from AGN Disentangle NG evolution from AGN evolutionevolution
XSurverys06 Cambridge, MA. Nov 2006
X-ray surveys X-ray surveys
E-CDF-SE-CDF-SCDF-NCDF-NCDF-SCDF-SXBOOTESXBOOTES
XSurverys06 Cambridge, MA. Nov 2006
Normal galaxies: selection criteriaNormal galaxies: selection criteria
Source detected in the 0.5-2.0 keV bandSource detected in the 0.5-2.0 keV band log (log ( f fX X [0.5-2.0 keV][0.5-2.0 keV]/f/fR R )) ≤ ≤ -1 (from filter)-1 (from filter)
28 sources, 28 sources, z z medmed = 0.128 = 0.128
XSurverys06 Cambridge, MA. Nov 2006
Area curveArea curve
XBOOTESXBOOTES
dominates areadominates area
XSurverys06 Cambridge, MA. Nov 2006
LLX X - z - z
XSurverys06 Cambridge, MA. Nov 2006
204 sources to 204 sources to
zz ~ 1.3 ~ 1.3subsamplessubsamples
complementarycomplementary
Luminosity functionLuminosity function
Page & Carrera Page & Carrera (2000)(2000)
φφ((L, zL, z) )
XSurverys06 Cambridge, MA. Nov 2006
L(dV/dz)dzd
Nmaxz(L)
z(L)min
maxL
Lmin
Luminosity functionLuminosity function 0 < 0 < z < z < 0.20.2 0.2 < 0.2 < z < z < 0.60.6 0.6 < 0.6 < z < z < 1.31.3Norman et al. (2004)Norman et al. (2004) z < z < 0.50.5 z > z > 0.50.5 Kim et al (2006)Kim et al (2006)
z < z < 0.30.3Georgakakis et al. (2006)Georgakakis et al. (2006)
z < z < 0.20.2no evolutionno evolution L ~L ~ (1+ (1+zz))kk
k = k = 2.72.7
XSurverys06 Cambridge, MA. Nov 2006
Luminosity function by typeLuminosity function by type
Separate Separate EEarly and arly and LLate-type systemsate-type systemsHyperzHyperz
61 template SEDs from smoothly interpolated 61 template SEDs from smoothly interpolated (Sullivan et al 2004) four galaxy types(Sullivan et al 2004) four galaxy types
Filters for different surveys Filters for different surveys E = 0 → 25 (105)E = 0 → 25 (105)L = 25 → 60 (99)L = 25 → 60 (99)
Then binned XLFThen binned XLF
XSurverys06 Cambridge, MA. Nov 2006
Luminosity function: Late typesLuminosity function: Late types
0 < 0 < z < z < 0.40.4
0.4 < 0.4 < z < z < 1.31.3
Georgakakis et al. (2006)Georgakakis et al. (2006)
no evolution, no evolution, z z < 0.2< 0.2LL ~ (1+ ~ (1+zz))kk
k = k = 2.72.7
Power laws?Power laws?
XSurverys06 Cambridge, MA. Nov 2006
Luminosity function: Early typesLuminosity function: Early types
0 < 0 < z < z < 0.40.4
0.4 < 0.4 < z < z < 1.31.3
Georgakakis et al. (2006)Georgakakis et al. (2006)
no evolution, no evolution, z z < 0.2< 0.2L ~L ~ (1+ (1+zz))kk
k = k = 2.72.7k = k = 22 Power laws?Power laws?
XSurverys06 Cambridge, MA. Nov 2006
Caveats…Caveats…
ML fitting to be doneML fitting to be done
Functional formFunctional form
XSurverys06 Cambridge, MA. Nov 2006
SummarySummary
One of the largest NG samples with very One of the largest NG samples with very broad coverage of broad coverage of L – z L – z spacespace
Reasonable agreement with previous work Reasonable agreement with previous work but but evolution in E as wellevolution in E as well