dc.contributor.author | Duncan, D.K. | |
dc.contributor.author | Rebull, L.M. | |
dc.contributor.author | Primas, F. | |
dc.contributor.author | Boesgaard, A.M. | |
dc.contributor.author | Deliyannis, C.P. | |
dc.contributor.author | Hobbs, L.M. | |
dc.contributor.author | King, J.R. | |
dc.contributor.author | Ryan, Sean G. | |
dc.date.accessioned | 2008-01-08T16:34:16Z | |
dc.date.available | 2008-01-08T16:34:16Z | |
dc.date.issued | 1998 | |
dc.identifier.citation | Duncan , D K , Rebull , L M , Primas , F , Boesgaard , A M , Deliyannis , C P , Hobbs , L M , King , J R & Ryan , S G 1998 , ' Boron in the very metal-poor star BD-13 3442 ' , Astronomy & Astrophysics , vol. 332 , pp. 1017-1024 . | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | dspace: 2299/1341 | |
dc.identifier.other | ORCID: /0000-0001-9069-5122/work/30501379 | |
dc.identifier.uri | http://hdl.handle.net/2299/1341 | |
dc.description.abstract | The Goddard High Resolution Spectrograph (GHRS) of the Hubble Space Telescope (HST) has been used to observe the boron 2500 °A region of BD −13 3442. At a metallicity of [Fe/H]=−3.00 this is the most metal- poor star ever observed for B. Nearly 26 hours of exposure time resulted in a detection. Spectrum synthesis using the latest Kurucz model atmospheres yields an LTE boron abundance of log ǫ(B)= +0.01 ± 0.20. This value is con- sistent with the linear relation of slope 1.0 between log ǫ(BLTE) and [Fe/H] found for 10 halo and disk stars by Duncan et al. (1997). Using the NLTE correction of Kisel- man & Carlsson (1996), the NLTE boron abundance is log ǫ(B)= +0.93 ± 0.20. This is also consistent with the NLTE relation determined by Duncan et al. (1997) where the slope of log ǫ(BNLTE) vs. [Fe/H] is 0.7. These data support a model in which most production of B and Be comes from the spallation of energetic C and O nuclei onto protons and He nuclei, probably in the vicinity of massive supernovae in star-forming regions, rather than the spallation of cosmic ray protons and alpha particles onto CNO nuclei in the general interstellar medium. | en |
dc.format.extent | 261243 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | |
dc.title | Boron in the very metal-poor star BD-13 3442 | en |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |