the bcg in abell 2261
DESCRIPTION
The BCG in Abell 2261. Marc Postman & the CLASH team Special Guest Star: Tod Lauer. 3 arcsec (10.5 kpc) fiber Typical E-gal SED. NVSS Radio Emission Detected. BCG Model. 38 arcsec = 133 kpc . 3 0 kpc. 10 kpc. For A2261: 1 arcsec subtends ~ 3.6 kpc (h=0.7) - PowerPoint PPT PresentationTRANSCRIPT
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The BCG in Abell 2261
Marc Postman & the CLASH teamSpecial Guest Star: Tod Lauer
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3 arcsec (10.5 kpc) fiber Typical E-gal SED
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NVSS Radio Emission Detected
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BCG Model
38 arcsec = 133 kpc
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For A2261: 1 arcsec subtends ~3.6 kpc (h=0.7) BCG Half-light radius = 28 kpc (h=0.7)
10 kpc 30 kpc
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I(r) = Io((r/rb)-γ)(1 + (r/rb)-α)(γ-β)/α Cusp radius, rγ, is defined in Lauer et al. 2007:
Radius at which dln(I(r))/dlnr reaches a prescribed value, in this case -0.5.
rγ is more tightly correlated with other galaxy properties than rb
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Lum
inos
ity D
ensit
yDe-projection: Abel integral
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Need to get “knot” spectrum
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011
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Ann Zabludoff 2011