The measure of the star surface gravity  

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In the journal Science Advances on 1 January 2016, astronomers from the Astrophysical Department (SAp) of the CEA-Saclay and Universities of Vienna, British Columbia, and Sydney as well as the Max Planck Institute, presented a new method for measuring the surface gravity of a star (which depends on its mass and diameter) with an accuracy of a few percent. Moreover, this method is also applicable to low luminosity stars for which the current instruments do not have sufficient sensitivity to perform usual seismic studies.

Read more (in French)...

See also :   Laboratoire Dynamique des Etoiles et de leur Environnement (LDEE)

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J. Bonnet-bidaud, 2016-01-29 00:00:00

 

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