Start multiple independent requests that rely on the same emitted value of another observable

I need to start 3 independent requests in a component that rely on a value emitted by another observable.

The first request provides an ID, once that ID is emitted I have to start 3 independent asynchronous requests which need that ID to recover the data from server.

The 3 requests should not be merged together and should remain separate so that I can be able to subscribe to each of those independent requests.

const source_id = <async_request_ID>;
const source_A = <async_request_A(ID)>;
const source_B = <async_request_B(ID)>;
const source_C = <async_request_C(ID)>;

source_id.pipe(
operator_I_am_looking_For((id) => source_A(id), source_B(id), source_C(id))
)

source_A.subscribe(...);
source_B.subscribe(...);
source_C.subscribe(...);


Probably the best way to handle this scenario is to notify the emitted value of the first request (the ID) but I'd like to know if exists a way to handle that with some kind of operator.

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