Phosphorus in the diffuse ISM

Details Phosphorus in the diffuse ISM Phosphorus in the diffuse ISM

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sf2a.conf..625l&link_type=abstract

SF2A-2005: Semaine de l'Astrophysique Francaise, meeting held in Strasbourg, France, June 27 - July 1, 2005, Edited by F. Casoli

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present FUSE and HST/STIS measurements of the PII column density toward Galactic stars. We find that phosphorus is not depleted in the diffuse neutral gas. Moreover, we derive a uniform N(PII)/N(OI) ratio, consistent with the solar P/O proportion. This implies that PII and OI evolve in parallel in the ISM. We argue that phosphorus, as traced by PII, is an excellent neutral oxygen tracer in various physical environments.

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