Suggested: Dimensionless
Exclude
Name/Symbol Condition
Symbol: Y _ { P }
Mean: 0.274 ± 0.241
Median: 0.245
Range: 0 ‒ 1.3
25 results.
arXiv Name Symbol Parsed Bound
astro-ph/9901157 🔍 (source) ^ { 4 } He abundance Y _ { P }
0.246 ± 0.0014
astro-ph/0012088 🔍 (source) proton fraction Y _ { P }
0.1776
astro-ph/0112064 🔍 (source) Y _ { P }
0.26
astro-ph/0112064 🔍 (source) Y _ { P }
0.235 +0.0050000000000000044-0.004999999999999977
astro-ph/0112064 🔍 (source) Y _ { P }
0.26
Upper
astro-ph/0303076 🔍 (source) Y _ { P }
0.2458
Lower
astro-ph/0303076 🔍 (source) Y _ { P }
0.2471
Upper
astro-ph/0304152 🔍 (source) Y _ { P }
0.2391 ± 0.002
astro-ph/0310699 🔍 (source) primordial ^ { 4 } He mass fraction Y _ { P }
0.00013000000000000002
1003.5942 🔍 (source) primordial helium abundance Y _ { P }
0.245
1004.0228 🔍 (source) proton fraction range Y _ { P }
0.0
1006.0489 🔍 (source) proton fraction range Y _ { P }
0.05
1009.0866 🔍 (source) Y _ { P }
0.313 ± 0.044
1101.3715 🔍 (source) proton fraction range Y _ { P }
0.56
1312.7706 🔍 (source) 4 } He Y _ { P }
0.254 ± 0.003
1412.8502 🔍 (source) proton fractions Y _ { P }
0.05
1412.8502 🔍 (source) proton fractions Y _ { P }
0.1
1412.8502 🔍 (source) proton fractions Y _ { P }
0.2
1412.8502 🔍 (source) proton fractions Y _ { P }
0.3
1412.8502 🔍 (source) proton fractions Y _ { P }
0.4
1412.8502 🔍 (source) proton fractions Y _ { P }
0.2
1608.02062 🔍 (source) mass Y _ { P }
0.2446 ± 0.0029
1904.01594 🔍 (source) primordial helium abundance Y _ { P }
0.2451 ± 0.0026
1905.05102 🔍 (source) primordial helium abundance Y _ { P }
0.2451 ± 0.0026
2005.12290 🔍 (source) primordial helium mass fraction Y _ { P }
0.2436 +0.0039-0.004