EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 503 / No 1 (August III 2009) A&A, 503 1 (2009) 61-72 Full HTML
Free Access
 

 

Table 8:

Helium abundances.
  0335-052E  
Property Nos. 1+2a Nos. 1+2b Nos. 1+2c Nos. 4+5c No.7a No.7b 0335-052Wb
a) Benjamin et al. (2002) emissivities  
$\Delta$I(H$\alpha $)/I(H$\alpha $) 0.0004 0.0013 0.0177 0.0007 0.0500 0.0491 0.0490
$T_{\rm e}$(He+) 19520 20250 20410 20330 19110 18970 17030
$N_{\rm e}$(He+) 162 132 53 12 12 10 14
$\tau$($\lambda$3889) 4.59 5.01 5.01 1.24 0.01 0.02 0.02
y+($\lambda$4471) 0.0834 $\pm$ 0.0021 0.0820 $\pm$ 0.0013 0.0827 $\pm$ 0.0013 0.0834 $\pm$ 0.0028 0.0858 $\pm$ 0.0118 0.0812 $\pm$ 0.0030 0.0935 $\pm$ 0.0086
y+($\lambda$5876) 0.0852 $\pm$ 0.0014 0.0839 $\pm$ 0.0013 0.0777 $\pm$ 0.0012 0.0798 $\pm$ 0.0015 0.0816 $\pm$ 0.0035 0.0802 $\pm$ 0.0020 0.0780 $\pm$ 0.0065
y+($\lambda$6678) 0.0768 $\pm$ 0.0017 0.0798 $\pm$ 0.0014 0.0818 $\pm$ 0.0017 0.0792 $\pm$ 0.0016 0.0876 $\pm$ 0.0092 0.0812 $\pm$ 0.0049 0.0791 $\pm$ 0.0137
y+wm 0.0822 $\pm$ 0.0010 0.0821 $\pm$ 0.0008 0.0805 $\pm$ 0.0008 0.0801 $\pm$ 0.0010 0.0826 $\pm$ 0.0031 0.0806 $\pm$ 0.0016 0.0831 $\pm$ 0.0048
y2+($\lambda$4686) 0.0011 $\pm$ 0.0001 0.0012 $\pm$ 0.0000 0.0026 $\pm$ 0.0000 0.0041 $\pm$ 0.0002 ... 0.0012 $\pm$ 0.0001 ...
ICF 0.9936 0.9935 0.9933 0.9928 0.9928 0.9929 0.9896
y($\lambda$4471) 0.0839 $\pm$ 0.0021 0.0827 $\pm$ 0.0013 0.0848 $\pm$ 0.0013 0.0868 $\pm$ 0.0028 0.0852 $\pm$ 0.0117 0.0818 $\pm$ 0.0030 0.0926 $\pm$ 0.0085
y($\lambda$5876) 0.0857 $\pm$ 0.0014 0.0846 $\pm$ 0.0013 0.0798 $\pm$ 0.0012 0.0833 $\pm$ 0.0015 0.0811 $\pm$ 0.0035 0.0809 $\pm$ 0.0020 0.0772 $\pm$ 0.0064
y($\lambda$6678) 0.0774 $\pm$ 0.0017 0.0805 $\pm$ 0.0014 0.0838 $\pm$ 0.0017 0.0827 $\pm$ 0.0016 0.0870 $\pm$ 0.0092 0.0819 $\pm$ 0.0049 0.0783 $\pm$ 0.0135
ywm 0.0828 $\pm$ 0.0010 0.0828 $\pm$ 0.0008 0.0825 $\pm$ 0.0008 0.0835 $\pm$ 0.0010 0.0820 $\pm$ 0.0031 0.0812 $\pm$ 0.0016 0.0822 $\pm$ 0.0048
Y 0.2486 $\pm$ 0.0030 0.2486 $\pm$ 0.0024 0.2481 $\pm$ 0.0024 0.2503 $\pm$ 0.0032 0.2470 $\pm$ 0.0097 0.2452 $\pm$ 0.0049 0.2474 $\pm$ 0.0148
b) Porter et al. (2005) emissivities  
$\Delta$I(H$\alpha $)/I(H$\alpha $) 0.0010 0.0027 0.0322 0.0002 0.0488 0.0493 0.0497
$T_{\rm e}$(He+) 19520 20260 20360 20330 19060 18850 16910
$N_{\rm e}$(He+) 197 162 86 10 11 11 11
$\tau$($\lambda$3889) 4.52 5.00 5.01 1.44 0.02 0.02 0.04
y+($\lambda$4471) 0.0853 $\pm$ 0.0021 0.0841 $\pm$ 0.0013 0.0849 $\pm$ 0.0013 0.0862 $\pm$ 0.0028 0.0884 $\pm$ 0.0118 0.0835 $\pm$ 0.0030 0.0958 $\pm$ 0.0086
y+($\lambda$5876) 0.0860 $\pm$ 0.0014 0.0848 $\pm$ 0.0013 0.0792 $\pm$ 0.0012 0.0816 $\pm$ 0.0015 0.0835 $\pm$ 0.0035 0.0820 $\pm$ 0.0020 0.0800 $\pm$ 0.0065
y+($\lambda$6678) 0.0771 $\pm$ 0.0017 0.0800 $\pm$ 0.0014 0.0831 $\pm$ 0.0017 0.0796 $\pm$ 0.0016 0.0882 $\pm$ 0.0092 0.0818 $\pm$ 0.0049 0.0803 $\pm$ 0.0137
y+wm 0.0831 $\pm$ 0.0010 0.0831 $\pm$ 0.0008 0.0821 $\pm$ 0.0008 0.0814 $\pm$ 0.0010 0.0844 $\pm$ 0.0031 0.0824 $\pm$ 0.0016 0.0851 $\pm$ 0.0048
y2+($\lambda$4686) 0.0011 $\pm$ 0.0001 0.0012 $\pm$ 0.0000 0.0026 $\pm$ 0.0000 0.0041 $\pm$ 0.0002 ... 0.0012 $\pm$ 0.0001 ...
ICF 0.9936 0.9935 0.9933 0.9928 0.9928 0.9929 0.9896
y($\lambda$4471) 0.0858 $\pm$ 0.0021 0.0848 $\pm$ 0.0013 0.0869 $\pm$ 0.0013 0.0897 $\pm$ 0.0028 0.0877 $\pm$ 0.0117 0.0842 $\pm$ 0.0030 0.0948 $\pm$ 0.0085
y($\lambda$5876) 0.0865 $\pm$ 0.0013 0.0854 $\pm$ 0.0012 0.0812 $\pm$ 0.0012 0.0851 $\pm$ 0.0015 0.0829 $\pm$ 0.0035 0.0827 $\pm$ 0.0020 0.0792 $\pm$ 0.0064
y($\lambda$6678) 0.0776 $\pm$ 0.0017 0.0807 $\pm$ 0.0014 0.0851 $\pm$ 0.0017 0.0831 $\pm$ 0.0016 0.0876 $\pm$ 0.0091 0.0825 $\pm$ 0.0049 0.0794 $\pm$ 0.0135
ywm 0.0836 $\pm$ 0.0009 0.0838 $\pm$ 0.0008 0.0842 $\pm$ 0.0008 0.0849 $\pm$ 0.0010 0.0838 $\pm$ 0.0031 0.0831 $\pm$ 0.0016 0.0842 $\pm$ 0.0048
Y 0.2506 $\pm$ 0.0029 0.2510 $\pm$ 0.0023 0.2518 $\pm$ 0.0024 0.2533 $\pm$ 0.0031 0.2509 $\pm$ 0.0096 0.2493 $\pm$ 0.0048 0.2518 $\pm$ 0.0148

a Low-resolution FORS observations; b high-resolution FORS observations; c UVES observations.


Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.