more detail in the following subsections.

Matching Instrumental Resolutions
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The measured line-strength of a given Lick Index depends on, amongst other things, the instrumental resolution. As a result of the fixed wavelength definitions of the index bandpasses and pseudocontinua, the line-strength generally decreases as the instrumental resolution is degraded. This instrumental broadening causes the wings of the spectral feature to extend outside their bandpass window reducing the strength of the absorption feature within the window. In addition to this, adjacent spectral features may depress the flux in the continuum by being broadened into the continuum windows reducing the line-strength further.

In order to transform SDSS spectra to the Lick/IDS system, it is necessary to degrade the higher resolution SDSS spectra to match the lower resolution of the IDS instrument. But, becauseCaina Silva, 24, was in intensive care in hospital today after being struck as he walked up a ramp jump just as biker Jeff Campacci landed.

The shock accident happened on Saturday night at the start of a long-running annual stunt show in Barretos near Sao Paulo, Brazil.

Video footage posted on YouTube showed the victim being flung through the air and landing on the ground several feet away after being hit as he reached the top of the drop ramp.

Silva, who was commentating on the feats of his team’s three stuntmen including Campacci for the show, the 13th Barretos Motorcycles, was still conscious when he reached hospital.

He was admitted to intensive care after suffering breathing problems and was last night on a ventilator.

Spectator Jair Luis de Carvalho said: “He