<p>It just means a binary formed as part of the initial star formation process, as opposed to one formed later in some sort of stellar interaction.</p>

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2024-07-29T21:34:45.660Z
2024-07-29T21:34:45.660Z
ProfRob
<p>I came across the term primordial binary in the article Stellar Collisions During Binary-Binary and Binary-Star Interactions by JM Fregeu:</p>
<p>&quot;The realization during the 1990s that primordial binaries are present in globular clusters in dynamically significant numbers has completely changed our theoretical perspective on
these systems&quot;</p>
<p>But what is a primordial binary? I don't think it means primordial black hole, which is what came up when I searched for it. Maybe a type of binary system that's really old (comparable to the age of the cluster)? I'm just not sure.</p>

<binary-star><globular-clusters>
What is a Primordial binary?
Astrovis
# What is a Primordial binary?

(Asked by: username_0 on 2024-07-29)

I came across the term primordial binary in the article Stellar Collisions During Binary-Binary and Binary-Star Interactions by JM Fregeu:

"The realization during the 1990s that primordial binaries are present in globular clusters in dynamically significant numbers has completely changed our theoretical perspective on
these systems"

But what is a primordial binary? I don't think it means primordial black hole, which is what came up when I searched for it. Maybe a type of binary system that's really old (comparable to the age of the cluster)? I'm just not sure.

**Tags:** binary-star, globular-clusters


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## 1 answers

### Answer by username_1 on 2024-07-29. Score: 16 | Accepted answer

It just means a binary formed as part of the initial star formation process, as opposed to one formed later in some sort of stellar interaction.


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