Doubt regarding legal heir

Hello,

You can apply for legal heirship certificate in your name as your aunty's parents and your father has also expired. 

It would devolve upon the legal representatives of deceased in terms of Indian Succession Act, 1925

Consult a local prudent lawyer for better appreciation of facts and professional advise.

In the given context, provisions of Section 47 shall apply -

47. Where intestate has left neither lineal descendant, nor father, nor mother.—Where the intestate has left neither lineal descendant, nor father, nor mother, the property shall be divided equally between his brothers and sisters and the child or children of such of them as may have died before him, such children (if more than one) taking in equal shares only the shares which their respective parents would have taken if living at the intestate’s death.

Also, please note that a nominee is only a trusty on behalf of the legal heir.