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Home All issues Volume 499 / No 1 (May III 2009) A&A, 499 1 (2009) 47-68 Full HTML
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Table 6:

First 4 rows: ages (measured in Gyr), metallicities [Z/H] and [E/Fe] abundances for the stacked spectra, in different redshift bins, of the red-sequence galaxies, measured using V08 models and the indices H $\gamma _{\rm F}$, Fe4383 and CN2. The spectra have been stacked separating galaxies with $\sigma $ lower than 175 km s-1 (right side) and larger than 175 km s-1 (left side). The parameters have been obtained iteratively as described in the text. Last three rows: ages, metallicities and [E/Fe] derived for the stacked spectra, at different redshifts, of morphologically classified E and S0 galaxies.
  $\sigma>175$ km s-1 $\sigma < 175$ km s-1
  Age       [Z/H]       [E/Fe]      Age       [Z/H]       [E/Fe]     
  Gyr           Gyr          
Coma $7.90\pm 1.81$ $-0.03\pm 0.06$ $0.40\pm 0.03$ $5.80\pm 0.36$ $-0.11\pm 0.03$ $0.31\pm 0.04$
z=0.45 $5.60\pm 1.05$ $-0.01\pm 0.07$ $0.35\pm 0.09$ $3.20\pm 0.64$ $-0.05\pm 0.13$ $0.16\pm 0.12$
z=0.55 $3.40\pm 0.52$ $ 0.11\pm 0.07$ $0.35\pm 0.06$ $3.40\pm 0.81$ $-0.13\pm 0.09$ $0.11\pm 0.13$
z=0.75 $2.70\pm 0.38$ $ 0.18\pm 0.11$ $0.46\pm 0.06$ $3.10\pm 0.83$ $-0.08\pm 0.14$ $0.30\pm 0.21$
z=0.45 $5.70\pm 2.42$ $ 0.02\pm 0.12$ $0.45\pm 0.10$ $2.80\pm 0.46 $ $ 0.01\pm 0.11$ $0.23\pm 0.14$
z=0.55 $3.10\pm 0.62$ $ 0.11\pm 0.12$ $0.30\pm 0.10$ $2.90\pm 0.42$ $-0.04\pm 0.10$ $0.25\pm 0.11$
z=0.75 $4.60\pm 2.32$ $-0.07\pm 0.14$ $0.55\pm 0.10$ $2.50\pm 0.34$ $0.11\pm 0.13$ $0.24\pm 0.15$

Source LaTeX | All tables | In the text

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