New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.
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3 Pith papers cite this work. Polarity classification is still indexing.
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The ROXs 12 system shows 12CO/13CO ratios of 77 and 55 in the star and companion, with a C/O ratio of 0.54 in the companion.
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.
citing papers explorer
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Towards a measurement of the primordial helium isotope ratio
New VLT observations of He I* absorbers yield a primordial ³He/⁴He ratio of (1.15^{+0.24}_{-0.21})×10^{-4} consistent with standard Big Bang nucleosynthesis, plus an updated stellar yield scaling factor.
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The ESO SupJup Survey. X. A carbon isotope contrast in the young ROXs 12 system
The ROXs 12 system shows 12CO/13CO ratios of 77 and 55 in the star and companion, with a C/O ratio of 0.54 in the companion.
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The Bulge Cluster Origin (BulCO) survey with CRIRES at the ESO-VLT: a chemical screening of the Globular Cluster NGC 6553
NGC 6553 is a metal-rich globular cluster that formed in situ in the Galactic bulge, shown by its abundance patterns, multiple populations, and chemical DNA tests.