Praesepe
H beta observations
No
Ref
beta
N
0038
290
2.746
2
0045
290
2.791
2
0114
290
2.806
2
0150
290
2.758
2
0218
290
2.687
2
0370
290
2.714
2
0429
290
2.736
2
0449
290
2.813
2
0459
290
2.677
2
0534
290
2.881
2
1166
290
2.875
2