| Issue |
EPJ Web of Conferences
Volume 101, 2015
The Space Photometry Revolution – CoRoT Symposium 3, Kepler KASC-7 Joint Meeting
|
|
|---|---|---|
| Article Number | 06019 | |
| Number of page(s) | 2 | |
| Section | Session 6 – Posters | |
| DOI | https://doi.org/10.1051/epjconf/201510106019 | |
| Published online | 23 September 2015 | |
https://doi.org/10.1051/epjconf/201510106019
DIAMONDS: a new Bayesian nested sampling tool*
Instituut voor Sterrenkunde, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
a e-mail: emncorsaro@gmail.com
Published online: 23 September 2015
In the context of high-quality asteroseismic data provided by the NASA Kepler Mission, we developed a new code, termed DIAMONDS (high-DImensional And multi-MOdal NesteD Sampling), for fast Bayesian parameter estimation and model comparison by means of the Nested Sampling Monte Carlo (NSMC) algorithm, an efficient and powerful method very suitable for high-dimensional problems (like the peak bagging analysis of solar-like oscillations) and multi-modal problems (i.e. problems that show multiple solutions). We applied the code to the peak bagging analysis of solar-like oscillations observed in a challenging F-type star. By means of DIAMONDS one is able to detect the different backgrounds in the power spectrum of the star (e.g. stellar granulation and faculae activity) and to understand whether one or two oscillation peaks can be identified or not. In addition, we demonstrate a novel approach to peak bagging based on multi-modality, which is able to reduce significantly the number of free parameters involved in the peak bagging model. This novel approach is therefore of great interest for possible future automatization of the entire analysis technique.
Software package available at the DIAMONDS code website: https://fys.kuleuven.be/ster/Software/Diamonds/.
© Owned by the authors, published by EDP Sciences, 2015
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.