Was Aragorns's son the next heir of Gondor?

[Annantar]

Was Aragorn's son the next heir of Gondor? I'm sure the answere is yes, but I've never heard of the history of Gondor after Aragorn had passed away, and I asume many of you have. So I'm wondering who became the next king, and what his son's history and his other children's were. If anyting I'm mainly looking for his son's, and if you can please add his other childrens also please! Thanx! Also please if you know, what is Gondor's history and what became of it?