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A search for solar-like oscillations in alpha Cen A

1997/10/31 by Timothy R. Bedding, T. R. Bedding, Bedding, Timothy R. +7
Earth and Planetary Sciences · Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #Atmospheric Ozone and Climate #FOS: Physical sciences #Solar and Space Plasma Dynamics #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9710359

6 pages, LaTeX with PS figures; Invited talk, to appear in Proc. IAU 185 on "New Eyes to See Inside the Sun and Stars" Kyoto, Japan, edited by F.-L. Deubner et al. Some revisions suggested by the editors

openalex publication_date 1997/10/31 · arxiv created 1997/12/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have been using a new method to search for solar-like oscillations that involves measuring temperature changes via their effect on the equivalent widths of the Balmer hydrogen lines. We observed alpha Cen A over six nights in 1995 with the 3.9-metre Anglo-Australian Telescope and the European Southern Observatory's 3.6-metre telescope in Chile. Oscillations were not detected, with an upper limit only slightly higher than the expected signal.

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