Do "starters" for Fluorescent lights contain some sort of capacitor?

As its name states it is a starter used to start, a description of a fluorescent lamp might help. When the on/off switch is closed, the line voltage 240v ac is high enough to strike the gas inside the starter and a current starts flowing through the choke coil, then through the two filaments of the tube, As the gas heats up it bends the contacts of the starter and touch each other. The moment this happens the gas starts to cool down and the contact breaks inducing a very high voltage (back e.m.f) in the choke coil this voltage adds up to the line voltage and ignites the fluorescent tube and it glows. Hence the starter is used to start you can remove the starter after the fluorescent tube lights up because it is in parallel with the tube not in series. A glowing fluorescent tube shows negative resistance, i.e, the resistance offered by the tube falls down as the applied voltage is increased. Such a condition makes the tube to draw more and more current till the current is large enough to burn out the tube. To prevent this, a current limiter is needed. This is the second fuction that is performed by the choke in series. You can also use an electronic starter which is better than normal starter.