Normal galaxies x ray luminosity function its evolution
This presentation is the property of its rightful owner.
Sponsored Links
1 / 17

Normal galaxies: X-ray luminosity function & its evolution PowerPoint PPT Presentation


  • 33 Views
  • Uploaded on
  • Presentation posted in: General

Normal galaxies: X-ray luminosity function & its evolution. Panayiotis Tzanavaris (NOA) Ioannis Georgantopoulos (NOA) Antonis Georgakakis (ICL). XSurverys06 Cambridge, MA. Nov 2006. XLF importance. Unique probe of X-ray binaries and hot gas in (non-AGN) normal galaxies

Download Presentation

Normal galaxies: X-ray luminosity function & its evolution

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Normal galaxies x ray luminosity function its evolution

Normal galaxies: X-ray luminosity function & its evolution

Panayiotis Tzanavaris (NOA)

Ioannis Georgantopoulos (NOA)

Antonis Georgakakis (ICL)

XSurverys06 Cambridge, MA. Nov 2006


Xlf importance

XLF importance

  • Unique probe of X-ray binaries and hot gas in (non-AGN) normal galaxies

  • Disentangle NG evolution from AGN evolution

XSurverys06 Cambridge, MA. Nov 2006


X ray surveys

X-ray surveys

  • E-CDF-S

  • CDF-N

  • CDF-S

  • XBOOTES

XSurverys06 Cambridge, MA. Nov 2006


Normal galaxies selection criteria

Normal galaxies: selection criteria

  • Source detected in the 0.5-2.0 keV band

  • log ( fX [0.5-2.0 keV]/fR ) ≤ -1 (from filter)

  • log LX ≤ 42 (cgs)

  • HR ≡ (H-S)/(H+S) ≤ 0

  • object morphologically a galaxy

    H ≡ 2.0-8.0 keV; S ≡ 0.5-2.0 keV

XSurverys06 Cambridge, MA. Nov 2006


E cdf s

E-CDF-S

X-ray: Lehmer et al (2005)

fX,lim[0.5-2.0keV]~1.1 × 10-16 erg cm-2 s-1

Optical: COMBO-17; Wolf et al (2004)

ESO 2.2 m WFI 17 filters

Rlim,Vega = 25.4

41 sources, z med = 0.264

XSurverys06 Cambridge, MA. Nov 2006


Cdf n

CDF-N

X-ray: 2 Ms, Alexander et al (2003)

fX,lim[0.5-2.0 keV]~2.5 × 10-17 erg cm-2 s-1

Optical: Barger et al. (2003); Capak et al. (2004)

KPNO 4 m (U), Subaru 8.3 m (rest)

Rlim,AB = 26.6

79 sources, z med = 0.46

XSurverys06 Cambridge, MA. Nov 2006


Cdf s

CDF-S

X-ray: 1 Ms, Giacconi et al (2002)

fX,lim[0.5-2.0 keV]~5.5 × 10-17 erg cm-2 s-1

Optical: Szokoly et al. (2004) VLT FORS spectra

Zheng et al. (2004) z phot using

10 NUV, optical, NIR bands [ESO FORS, EIS, VLT, GOODS, COMBO-17]

56 sources, z med = 0.52

XSurverys06 Cambridge, MA. Nov 2006


Xbootes

XBOOTES

X-ray: Kenter et al (2005)

fX,lim[0.5-2.0keV]~4.7 × 10-15 erg cm-2 s-1

Optical: SDSS DR5; Adelman-McCarthy et al (2007)

5 Sloan filters u’g’r’i’z’

r’lim,SDSS = 22.2

28 sources, z med = 0.128

XSurverys06 Cambridge, MA. Nov 2006


Area curve

Area curve

XBOOTES

dominates area

XSurverys06 Cambridge, MA. Nov 2006


L x z

LX - z

  • 204 sources to

    z ~ 1.3

  • subsamples

    complementary

XSurverys06 Cambridge, MA. Nov 2006


Luminosity function

Luminosity function

  • Page & Carrera (2000)

  • φ(L, z) 

XSurverys06 Cambridge, MA. Nov 2006


Luminosity function1

Luminosity function

 0 < z < 0.2

 0.2 < z < 0.6

 0.6 < z < 1.3

Norman et al. (2004)

z < 0.5

z > 0.5

Kim et al (2006)

z < 0.3

Georgakakis et al. (2006)

z < 0.2

no evolution

L ~ (1+z)k

k = 2.7

XSurverys06 Cambridge, MA. Nov 2006


Luminosity function by type

Luminosity function by type

  • Separate Early and Late-type systems

  • Hyperz

    • 61 template SEDs from smoothly interpolated (Sullivan et al 2004) four galaxy types

    • Filters for different surveys

    • E = 0 → 25 (105)

    • L = 25 → 60 (99)

  • Then binned XLF

XSurverys06 Cambridge, MA. Nov 2006


Luminosity function late types

Luminosity function: Late types

0 < z < 0.4

0.4 < z < 1.3

  • Georgakakis et al. (2006)

    no evolution, z < 0.2

    L ~ (1+z)k

    k = 2.7

  • Power laws?

XSurverys06 Cambridge, MA. Nov 2006


Luminosity function early types

Luminosity function: Early types

 0 < z < 0.4

 0.4 < z < 1.3

  • Georgakakis et al. (2006)

    no evolution, z < 0.2

    L ~ (1+z)k

    k = 2.7

    k = 2

  • Power laws?

XSurverys06 Cambridge, MA. Nov 2006


Caveats

Caveats…

  • ML fitting to be done

  • Functional form

XSurverys06 Cambridge, MA. Nov 2006


Summary

Summary

  • One of the largest NG samples with very broad coverage of L – z space

  • Reasonable agreement with previous work but evolution in E as well

  • More data: CDF 4 Ms

    XEUS (resolution?)

XSurverys06 Cambridge, MA. Nov 2006


  • Login