The Boron Abundance of the Orion G-Dwarf Member BD -05°1317
Abstract
The boron abundance is derived for the young Orion solar-type member BD -05°1317 from Hubble Space Telescope Goddard High Resolution Spectrograph spectra of the B I resonance lines near 2497 Å. The abundance of logɛ(B)=2.1+/-0.2 is ~0.6-0.7 dex below solar. As this young pre-main-sequence star has an undepleted lithium abundance, such a low boron abundance in a near-solar metallicity star is unexpected. No simple explanation apparently accounts for the low boron abundance observed for this star. A comparison of the boron and oxygen abundances in BD -05°1317 with those of other near-solar metallicity disk stars suggests that there might be a large scatter (~0.8 dex) in the boron abundance at a given oxygen abundance. Such a scatter also has been reported in the literature for beryllium at a given metallicity.
Based on observations obtained with the NASA/ESA Hubble Space Telescope through Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS-5-26555.- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1999
- DOI:
- 10.1086/307413
- Bibcode:
- 1999ApJ...519..844C
- Keywords:
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- STARS: ABUNDANCES;
- STARS: INDIVIDUAL: ALPHANUMERIC: BD -05 DEG1317;
- ULTRAVIOLET: STARS;
- Stars: Abundances;
- Stars: Individual: Alphanumeric: BD -05°1317;
- Ultraviolet: Stars