... merger[*]
Appendices are only available in electronic form at http://www.edpsciences.org 
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...[*]
Tables C.1 and C.2 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/453/493 
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... 16 kpc/arcmin[*]
H0 is assumed to be 70 km s-1 Mpc-1 throughout this paper. 
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... [*]
This is the systemic velocity of the gas model that reproduces our 21-cm wavelength observations; the model is described in Sect. 4.1. 
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... HIPASS[*]
H I Parkes All Sky Survey. 
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... 2MASS[*]
2 Micron All Sky Survey. 
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... DSS[*]
Digitised Sky Survey. 
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... IC 4200-A[*]
As mentioned in Sect. 2, 2MASX J13090029-5153544 appears only in the catalogue of the 2MASS survey and is the closest object to IC 4200. 
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... aperture[*]
Indeed, the V-magnitude measured within a 20-arcsec-diameter aperture is in agreement with the result of Winkler (1997). 
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... Milky Way[*]
$M_{\rm H {\sc i},MW}=5$ $\times $ 109 $M_{\odot}$ (Henderson et al. 1982). 
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... respectively[*]
These are the V-band half-light radii along major and minor axis, obtained as a part of our analysis of the morphology of IC 4200 described in Sect. 4.6. 
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...$\rangle$][*]
$\langle$MgFe$\rangle$ is defined as $\langle$MgFe$\rangle$ = $\sqrt{ \rm Mgb\times{\langle Fe \rangle}}$, where $\langle$Fe$\rangle$ = (Fe5270+Fe5335)/2. 
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... type[*]
The Milky Way has LB=2.3 times ${10^{10}}~L_{\odot}$ (Van den Bergh 1988). 
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... Milky Way[*]
The stellar mass of the Milky Way is 6 $\times $ 1010 $M_{\odot}$ (Bahcall & Soneira 1980). 
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...$M_{\odot}$)[*]
Repeating this calculation without distinguishing between cold and hot accretion, we find that the total gaseous mass accreted is 7.5 $\times $ 1010 $M_{\odot}$. Assuming that the hot gas is at the virial temperature of the halo ($\sim $3.7 $\times $ 106 K) and that it is distributed within 60 kpc from the center, we estimate that its X-ray luminosity is $\sim $5 $\times $ 1041 erg/s. 
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...[*]
We note that the transformation from the "MILES value'' are based on spectra known to be slightly contaminated by scattered light. The MILES spectra that will appear in Sánchez-Blázquez et al. (2006) are corrected for this effect. 
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Copyright ESO 2006