Table · dataset · 2025
Time of minima of NSVS 14256825
Listed in IVOA Registry (Virtual Observatory)
Recent period investigations of the post-common envelop binary (PCEB) NSVS 14256825 suggest that two circumbinary companions are necessary to explain the observed eclipse timing variations (ETVs).
Description
Our objective in this work was to search for the best-fitting curve of two LTTE terms of the ETV diagram by implementing a grid search optimization scheme of Keplerian (kinematic) and Newtonian (N-body) fits alongside a dynamical stability analysis of N-body simulations.
We compiled two datasets of archival photometric data covering different timelines and updated them with new observations and with three new times of minima calculated from the Transiting Exoplanet Survey Satellite (TESS). A grid search optimization process was implemented, and the resulting solutions that fell within the 90% confidence interval of the best-fitting curve of the ETV diagram were tested for orbital stability using N-body simulations and the MEGNO chaos indicator.
Read the rest (2 more)
The Keplerian and Netwonian fits are in close agreement, and hundreds of stable configurations were identified for both datasets reaching a lifetime of 1Myr. Our results suggest that the ETV data can be explained by the presence of a circumbinary planet with mass mb=11M_Jup_ in a nearly circular inner orbit of period Pb=7yr. The outer orbit is unconstrained with a period range Pc=20-50yr (from 3:1 to 7:1 MMR) for a circumbinary body of substellar mass (mc=11-70M_Jup_).
The stable solutions of the minimum- and maximum-reduced chi-square value were integrated for 100Myr and confirmed a non-chaotic behavior. Their residuals in the ETV data could be explained by a spin-orbit coupling model (Applegate-Lanza). However, continuous monitoring of the system is required in order to refine and constrain the proposed solutions.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A115 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024A&A...691A.115Z ui.adsabs.harvard.edu/abs/2024A%26A...691A.115Z ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/691/a115 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 72%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/691/a115 | 12 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (72%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |