UBC - University of British Columbia (Vancouver Campus, , 2329 West Mall, Vancouver, BC, V6T 1Z4 /
Okanagan Campus, 3333 University Way, Kelowna, BC, V1V 1V7 - Canada)
Abstract : Stellar interiors are inaccessible through direct observations. For this reason, helioseismologists made use of the Sun's acoustic oscillation modes to tune models of its structure. The quest to detect modes that probe the solar core has been ongoing for decades. We report the detection of mixed modes penetrating all the way to the core of an evolved star from 320 days of observations with the Kepler satellite. The period spacings of these mixed modes are directly dependent on the density gradient between the core region and the convective envelope
https://hal-cea.archives-ouvertes.fr/cea-00863835
Contributor : Bruno Savelli <>
Submitted on : Tuesday, July 21, 2020 - 2:50:24 PM Last modification on : Friday, December 18, 2020 - 5:30:04 PM Long-term archiving on: : Tuesday, December 1, 2020 - 3:10:45 AM
P. G. Beck, T. R. Bedding, B. Mosser, D. Stello, R.A. Garcia, et al.. Kepler detected gravity-mode period spacings in a red giant star. Science, American Association for the Advancement of Science, 2011, 332 (6026), pp.205. ⟨10.1126/science.1201939⟩. ⟨cea-00863835⟩