| > it is noteworthy to find a star that has it. I don't think this is an accurate reading of that article. See forex https://arxiv.org/abs/1704.08282 whose abstract reads in part: > We also found average [P/Si] = 0.02 ± 0.07 and [P/S] = 0.15 ± 0.15 for our sample, showing no significant deviations from the solar ratios for [P/Si] and [P/S] ratios. Quoting from the introduction I find: Phosphorus abundances have been derived in planetary nebulae .... and in damped Lyman alpha systems using ionized phosphorus lines
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Anomalously high phosphorus abundances have been measured using optical phosphorus features in blue horizontal branch stars .... Molecular forms of phosphorus, such as PO, PN, and CP, have been detected and used to understand phosphorus chemistry in the interstellar medium ... or example, phosphorus molecules have been detected in the interstellar medium ... and in star forming regions ... Phosphorus molecules have also been found in the circumstellar envelopes of evolved stars (... Finally, the diffuse interstellar medium has been measured using P II lines.... |