<p>Yes. Stars (those objects that are supported by hydrogen fusion) can be as cool as spectral type L2.</p>
<p>Brown dwarfs can be as warm as M4/5 when they are young.</p>
<p>i.e. there isn't a clear spectral type Vs mass relationship. It depends on age too.</p>

CC BY-SA 4.0
2020-11-11T23:26:30.203Z
2020-11-11T23:26:30.203Z
ProfRob
<p>We have the &quot;normal&quot; main sequence stars, OBAFGKM. Below K and M are the brown dwarfs, L,T, and Y. Zooming into the area at the edges of M and L, we have spectral types M9, M9.5, L0, and L1. So I am wondering, is there any red dwarf that has a spectral type of L?</p>

<star><temperature><brown-dwarf><stellar-classification>
Can red dwarf stars have a spectral type of L?
WarpPrime
# Can red dwarf stars have a spectral type of L?

(Asked by: username_0 on 2020-11-11)

We have the "normal" main sequence stars, OBAFGKM. Below K and M are the brown dwarfs, L,T, and Y. Zooming into the area at the edges of M and L, we have spectral types M9, M9.5, L0, and L1. So I am wondering, is there any red dwarf that has a spectral type of L?

**Tags:** star, temperature, brown-dwarf, stellar-classification


---

## 1 answers

### Answer by username_1 on 2020-11-11. Score: 2 | Accepted answer

Yes. Stars (those objects that are supported by hydrogen fusion) can be as cool as spectral type L2.

Brown dwarfs can be as warm as M4/5 when they are young.

i.e. there isn't a clear spectral type Vs mass relationship. It depends on age too.


---

