The acoustic spectrum of alpha Cen A
Abstract
This paper presents the analysis of Doppler p-mode observations of the G2V star α Cen A obtained with the spectrograph CORALIE in May 2001. Thirteen nights of observations have made it possible to collect 1850 radial velocity measurements with a standard deviation of about 1.5 m s-1. Twenty-eight oscillation modes have been identified in the power spectrum between 1.8 and 2.9 mHz with amplitudes in the range 12 to 44 cm s-1. The average large and small spacing are respectively equal to 105.5 and 5.6 μHz. A comparison with stellar models of α Cen A is presented.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.