Team ceremonies for visitors from space (9)

I believe the answer is:

siderites

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'visitors from space' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.

'team ceremonies' is the wordplay.
'team' becomes 'side' (both can mean a sports team).
'ceremonies' becomes 'rites' (rite is a kind of ceremony).
'side'+'rites'='SIDERITES'

'for' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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