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Yes, it is "al hya", not "ai hya".

It really looks like a capital I in the title to me (with the top serif extending both left and right). It also has ASCII code 73.

Screenshot: https://imgur.com/8HuOsqc (same in the article too)

Interesting, you are correct! It actually is an "i" instead of an "l", according to the original scientific paper. My mistake.

I assumed it is "al" because a large part of named stars are called "al-something", because the names come from Arabic. But in this case the name of the star actually is "ai hya".

Sadly I cannot edit my original comment anymore.

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