pith. sign in

arxiv: 1311.3021 · v1 · pith:OFW7YT6Snew · submitted 2013-11-13 · 🌌 astro-ph.EP

Revisiting the proposed circumbinary multi-planet system NSVS14256825

classification 🌌 astro-ph.EP
keywords binarycircumbinarycompaniondataeclipsesinsufficientmodelnsvs14256825
0
0 comments X
read the original abstract

In this work we carry out an analysis of the observed times of primary and secondary eclipses of the post-common envelope binary NSVS14256825. Recently, \cite{Almeida2013} proposed that two circumbinary companions orbit this short-period eclipsing binary, in order to explain observed variations in the timing of mutual eclipses between the two binary components. Using a standard weighted least-squares minimisation technique, we have extensively explored the topology of $\chi^2$ parameter space of a single planet model. We find the data set to be insufficient to reliably constrain a one-companion model. Various models, each with similar statistical significance, result in substantially different orbital architectures for the additional companion. No evidence is seen for a second companion of planetary nature. We suspect insufficient coverage (baseline) of timing data causing the best-fit parameters to be unconstrained.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.