Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Fenner, Y."'
Publikováno v:
Nucl.Phys. A758 (2005) 272-275
We are in the process of testing a popular theory that the observed abundance anomalies in the Globular Cluster NGC 6752 are due to `internal pollution' from intermediate mass asymptotic giant branch stars. To this end we are using a chemical evoluti
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505378
Publikováno v:
Nucl.Phys. A758 (2005) 259-262
Motivated by the inability of Galactic chemical evolution models to reproduce some of the observed solar neighbourhood distribution of elements (and isotopes) with atomic numbers 6 < Z < 15, we have revisited the relevant stellar and Galactic models
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502280
Publikováno v:
Mon.Not.Roy.Astron.Soc.358:1337-1351,2005
We describe the technique of absorption line imaging of galaxy disks using the Taurus Tunable Filter on the Anglo-Australian Telescope and demonstrate its sensitivity to the behaviour of spectral features associated with Mg and Fe. Radial profiles of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501355
Publikováno v:
Mon.Not.Roy.Astron.Soc.358:468-480,2005
At redshifts z_abs < 2, quasar absorption-line constraints on space-time variations in the fine-structure constant, alpha, rely on the comparison of MgII and FeII transition wavelengths. One potentially important uncertainty is the relative abundance
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501168
Autor:
Renda, A., Fenner, Y., Gibson, B. K., Karakas, A. I., Lattanzio, J. C., Campbell, S., Chieffi, A., Cunha, K., Smith, V. V.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 354 (2004) 575
The main astrophysical factories of fluorine (19F) are thought to be Type II supernovae, Wolf-Rayet stars, and the asymptotic giant branch (AGB) of intermediate mass stars. We present a model for the chemical evolution of fluorine in the Milky Way us
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410580
Publikováno v:
Mon.Not.Roy.Astron.Soc. 353 (2004) 789-795
A self-consistent model of the chemical evolution of the globular cluster NGC 6752 is presented to test a popular theory that observed abundance anomalies are due to ``internal pollution'' from intermediate mass asymptotic giant branch stars. We simu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406360
Autor:
Lee, H. -c., Gibson, B. K., Fenner, Y., Brook, C. B., Kawata, D., Renda, A., Holopainen, J., Flynn, C.
Using stellar population synthesis techniques, we explore the photometric signatures of white dwarf progenitor dominated galactic halos, in order to constrain the fraction of halo mass that may be locked-up in white dwarf stellar remnants. We first c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0401282
Autor:
Fenner, Y., Gibson, B. K., Lee, H. -c., Karakas, A. I., Lattanzio, J. C., Chieffi, A., Limongi, M., Yong, D.
The abundance of the neutron-rich magnesium isotopes observed in metal-poor stars is explained quantitatively with a chemical evolution model of the local Galaxy that considers - for the first time - the metallicity-dependent contribution from interm
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307445
Autor:
Renda, A., Fenner, Y., Gibson, B.K., Karakas, A.I., Lattanzio, J.C., Campbell, S., Chieffi, A., Cunha, K., Smith, V.V.
Publikováno v:
In Nuclear Physics, Section A 2005 758:324-327
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