Papers
Journal Article•
Abstract: Abstract
We present our current knowledge of the solar chemical composition based on the recent significant downward revision of the solar photospheric abundances of the most abundant metals. These new solar abundances result from the use of a 3D hydrodynamic model of the solar atmosphere instead of the classical 1D hydrostatic models, accounting for departures from LTE, and improved atomic and molecular data. With these abundances, the new solar metallicity, Z, decreases to Z=0.012, almost a factor of two lower than earlier widely used values. We compare our values with data from other sources and analyse a number of impacts of these new photospheric abundances. While resolving a number of longstanding problems, the new 3D-based solar photospheric composition also poses serious challenges for the standard solar model as judged by helioseismology.
511 citations
Journal Article•
17 citations
Journal Article•
12 citations
Journal Article•
10 citations
Journal Article•
TL;DR: In this article, the concept of rotational mixing has been challenged by some authors (e.g. Hunter et al. 2008) and it is shown that the excess N/H is a multivariate function f(M, age, v, sin i, multiplicity,Z).
Abstract: Recently, the concept of rotational mixing has been challenged by some authors (e.g. Hunter et al. 2008). We show that the excess N/H is a multivariate function f(M, age, v, sin i, multiplicity,Z). To find a correlation of a multivariate function with some parameter, it is evidently necessary to limit as much as possible the range of the other involved parameters. When this is done, the concept of rotational mixing is supported by the observations. We also show that the sample data are not free from several biases. A fraction of about 20% of the stars may escape to the relation as a result of binary evolution.
8 citations
Related Journals (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2009 | 12 |
| 2008 | 16 |
| 2007 | 2 |
| 2004 | 1 |
| 2003 | 1 |
| 2002 | 4 |