Detection of two additional circumbinary planets around Kepler-451


Esmer E. M., Baştürk Ö., Selam S. O., Aliş S.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol.511, no.4, pp.5207-5216, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 511 Issue: 4
  • Publication Date: 2022
  • Doi Number: 10.1093/mnras/stac357
  • Journal Name: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, INSPEC, Metadex, zbMATH, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.5207-5216
  • Keywords: planets and satellites: detection, binaries: eclipsing, stars: individual: Kepler-451, stars: planetary systems, FREQUENCY-ANALYSIS, SYSTEM, VIRGINIS
  • Istanbul University Affiliated: Yes

Abstract

We announce the detection of two new planetary-mass companions around Kepler-451 binary system in addition to the one detected previously based on eclipse timing variation analysis. We found that an inner planet with 43 d period with a minimum mass of 1.76 M-jup and an outer one with a similar to 1800 d orbital period with a minimum mass of 1.61 M-jup can explain the periodic variations in the residuals of the one-planet fit of the eclipse timings. We updated the orbital period of the middle planet as 406 d, and determined its eccentricity as 0.33. The newly discovered outer planet is also on an eccentric orbit (0.29), while the innermost planet was assumed to have a circular orbit. All three Jovian planets have similar masses, and our dynamical stability test yields that the system is stable.