Neon and oxygen in low activity stars: towards a coronal unification with the Sun

2008/06/04 by J. Robrade, J. H. M. M. Schmitt, F. Favata
Physics and Astronomy · #Abundance (ecology) #Astronomy and Astrophysical Research #Helioseismology #Neon #Oxygen #Population #Scientific Research and Discoveries #Solar physics #Stars #Stellar atmosphere #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:200809690

Accepted for publication in A&A, 8 pages, 5 figures

arxiv created 2008/06/04 · openalex publication_date 2008/06/09 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims. The disagreement between helioseismology and a recent downward revision of solar abundances has resulted in a controversy about the true neon abundance of the Sun and other stars. We study the coronal Ne/O abundance ratios of nearby stars with modest activity levels and investigate a possible peculiarity of the Sun among the stellar population in the solar neighborhood.

Citations

• The coronal Ne/O abundance of α Centauri
• Collisional Plasma Models with APEC/APED: Emission-Line Diagnostics of Hydrogen-like and Helium-like Ions
• High-amplitude, long-term X-ray variability in the solar-type star HD 81809: The beginning of an X-ray activity cycle?
• Neon Lights up a Controversy: The Solar Ne/O Abundance
• Helioseismological Implications of Recent Solar Abundance Determinations
• Constraining Solar Abundances Using Helioseismology
• Coronal versus photospheric abundances of stars with different activity levels
• X-rays from α Centauri – The darkening of the solar twin