Just so that it's written as a proper answer which people can vote on/reply to, I'll reiterate what I said in chat, and what was included in the question.
If OP included the author tag themselves, we leave it.
If OP seems reasonably sure it might be from author XYZ, we include it.
If OP is on the "meh, maybe, maybe not" side, we don't include it.
Yes, per What is the correct usage of individual works tags vs. author tags vs. franchise tags?, we usually use author tags for:
asking about a) aspects of the author's life, or b) aspects of the author's work that are not specific to a single work or franchise.
I guess pedantically speaking, story-ID "which I think was from Asimov" doesn't fall into A (it's not a part of Asimov's life) nor does it fall into B (story-ID is definitely specific to a work/franchise). On the other hand, tagging with the author tag will get the attention of people watching said author tag (if it exists), so supposedly, people who are interested in, or experts in author XYZ, and are more likely to provide an answer.
All good, no harm done, and OP having an idea of the author is rare enough so that it doesn't get messy.
About creating an author tag, I guess that's at your discretion, with an added bit of common sense. If it's a relatively unknown author that no one will be watching and no other questions can benefit from, meh. On the other hand, we could use a Sheckley tag, for instance. (4 "maybe it's Sheckley", and Sheckley was a prominent writer)