You haven't provided a list of stars to choose from! Please provide the list of stars so I can help you determine which one has a surface temperature of approximately 9000 K and a luminosity 1-20 times greater than the Sun.

To help you understand the information needed, here's what we can use to identify the star:

* Surface Temperature: This is directly related to the star's color. Stars with surface temperatures around 9000 K are typically white or slightly yellowish.

* Luminosity: This measures how much energy the star emits. A star with a luminosity 1-20 times greater than the Sun is significantly brighter than our Sun.

Once you provide the list of stars, I can help you find the correct answer.