Oxygen not new
Our sun has not created oxygen atoms from hydrogen, so they must have been part of the cloud from which the sun was born. Similarly with nitrogen and carbon.
Hydrogen is overwhelmingly more abundant than the C N O atoms, so they will exist as hydrides: methane, ammonia, and water. Rather like the atmosphere of Jupiter, then. Yes, these hydrides will have existed before the solar system was born, though they may have been unformed and reformed by solar processes.
The article seems to be saying the deuterium abundances are a signal. But deuterium does not disappear until temperatures are high enough for nuclear reactions. So it is consumed within the sun, but not in the planetary zone. The measurements the article reports seem to buttress standard theory rather than saying anything new.
Biting the hand that feeds IT
