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The abundance pattern of λ Bootis stars ?
| Content Provider | Semantic Scholar |
|---|---|
| Author | Heiter, Ulrike |
| Copyright Year | 2001 |
| Abstract | Within a project to investigate the properties of λBootis stars, we report on their abundance pattern. High resolution spectra have been obtained for a total of twelve candidate λBootis stars, four of them being contained in spectroscopic binary systems, and detailed abundance analyses have been performed. All program stars show a characteristic λBootis abundance pattern (deficient heavy elements and solar abundant light elements) and an enhanced abundance of Na. This work raises the fraction of λBootis stars with known abundances to 50%. The resulting abundances complemented by literature data are used to construct a “mean λBootis abundance pattern”, which exhibits, apart from general underabundances of heavy elements (≈−1 dex) and solar abundances of C, N, O, Na and S, a star-to-star scatter which is up to twice as large as for a comparable sample of normal stars. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.aanda.org/articles/aa/pdf/2002/03/aa10119.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/0112196v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | A* search algorithm ABRA gene Boo CNS disorder Chromium Contain (action) Depletion region Dex Dietary Iron Exhibits as Topic Field electron emission GUCY2C protein, human Huntington Disease Large Numerical aperture Period-doubling bifurcation Silicon Sodium Starflight Stars, Celestial Stellar classification Titanium newton nickel |
| Content Type | Text |
| Resource Type | Article |
