Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation

Details Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.5405b&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #54.05; Bulletin of the American Astronomical Society, Vol. 33, p.1382

Astronomy and Astrophysics

Astronomy

Scientific paper

Hubble Space Telescope STIS observations of the B 3 resonance line at 2066 Å have been obtained and analyzed for two Small Magellanic Cloud (SMC) B-type stars. Boron is not detected in either star. However, upper limits to the boron abundance are set, with 12+log(B/H) <= 1.6 for both AV 304 and NGC 346-637. These results suggest that boron may scale quadratically with oxygen (B α O2) in the SMC, as is expected for a pure cosmic-ray spallation standard model. However, the results are also consistent with the scaling law B α O1.4 found for F and G dwarfs in the disk of the Galaxy by Smith etal (2001). Also, mixing due to rapid-rotation could have depleted boron in our SMC B-star targets. The UV spectrum of AV 304 has also been used to determine an iron-group abundance, [Fe/H]=-0.6+/-0.2, from both an absolute and a differential analysis, with respect to the Galactic B-star HD 36591. This is consistent with results from the A-F supergiants in the SMC. Support for proposal GO#08161 was provided by NASA through a grant from the Space Telescope Science Institute.

Affiliated with

Also associated with

No associations

Rating

Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boron in the Small Magellanic Cloud: A Novel Test of Light Element Formation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1231517