The quest for companions to post-common envelope binaries. II. NSVS14256825 and HS0705+6700
arXiv:1202.5990 · doi:10.1051/0004-6361/201118105
Abstract
We report new mid-eclipse times of the two close binaries NSVS14256825 and HS0705+6700, harboring an sdB primary and a low-mass main-sequence secondary. Both objects display clear variations in the measured orbital period, which can be explained by the action of a third object orbiting the binary. If this interpretation is correct, the third object in NSVS14256825 is a giant planet with a mass of roughly 12 M_Jup. For HS0705+6700, we provide evidence that strengthens the case for the suggested periodic nature of the eclipse time variation and reduces the uncertainties in the parameters of the brown dwarf implied by that model. The derived period is 8.4 yr and the mass is 31 M_Jup, if the orbit is coplanar with the binary. This research is part of the PlanetFinders project, an ongoing collaboration between professional astronomers and student groups at high schools.
Accepted by Astron. and Astrophys
References in corpus (15)
- Northern Sky Variability Survey (NSVS): Public data release
- Post-common-envelope binaries from SDSS. XI: The white dwarf mass distributions of CVs and pre-CVs
- The sdB+M Eclipsing System HW Virginis and its Circumbinary Planets
- Two planets orbiting the recently formed post-common envelope binary NN Serpentis
- Detection of a period decrease in NN Ser with ULTRACAM: evidence for strong magnetic braking or an unseen companion?
- Detection of a planetary system orbiting the eclipsing polar HU Aqr
- A dynamical analysis of the proposed HU Aquarii planetary system
- Post-common envelope binaries from SDSS - XIV. The DR7 white dwarf-main sequence binary catalogue
- Orbital Period Variations in Eclipsing Post Common Envelope Binaries
- The giant planet orbiting the cataclysmic binary DP Leonis
- HS 0705+6700: a new eclipsing sdB binary
- Revisiting the proposed planetary system orbiting the eclipsing polar HU Aquarii
- Detection of a tertiary brown dwarf companion in the sdB-type eclipsing binary HS 0705+6700
- Hunting high and low: XMM monitoring of the eclipsing polar HU Aquarii
- Can angular momentum loss cause the period change of NN Ser?
Cited by in corpus (31)
- Origin of apparent period variations in eclipsing post-common-envelope binaries
- On the dynamical stability of the proposed planetary system orbiting NSVS 14256825
- The quest for companions to post-common envelope binaries: III. A reexamination of HW Virginis
- Eclipsing time variations in close binary systems: Planetary hypothesis vs. Applegate mechanism
- Two possible circumbinary planets in the eclipsing post-common envelope system NSVS 14256825
- Planet formation from the ejecta of common envelopes
- Kepler detection of a new extreme planetary system orbiting the subdwarf-B pulsator KIC10001893
- Fourteen new eclipsing white dwarf plus main-sequence binaries from the SDSS and Catalina surveys
- Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP
- Timing variations in the secondary eclipse of NN Ser
- EC 10246-2707: a new eclipsing sdB + M dwarf binary
- A quantitative in-depth analysis of the prototype sdB+BD system SDSS J08205+0008 revisited in the Gaia era
- Long-term photometry of the eclipsing dwarf nova V893 Scorpii: Orbital period, oscillations, and a possible giant planet
- EXOTIME: searching for planets and measuring Pdot in sdB pulsators
- Revisiting the proposed circumbinary multi-planet system NSVS14256825
- Is there a circumbinary planet around NSVS 14256825?
- The quest for companions to post-common envelope binaries: I. Searching a sample of stars from the CSS and SDSS
- Eclipse timing variations in post-common envelope binaries: Are they a reliable indicator of circumbinary companions?
- New Observations of the Eclipsing Binary System NY Vir and its Candidate Circumbinary Planets
- The quest for stable circumbinary companions to post-common envelope sdB eclipsing binaries Does the observational evidence support their existence?
- Looking at the bright side - The story of AA Dor as revealed by its cool companion
- The Applegate mechanism in Post-Common-Envelope Binaries: Investigating the role of rotation
- Possible substellar companions in dwarf eclipsing binaries: SDSS J143547.87+373338.5, NSVS 7826147, and NSVS 14256825
- A Close-in Substellar Object Orbiting the sdOB-type Eclipsing-Binary System NSVS14256825
- Planet formation in post-common-envelope binaries
- Eclipse Timing Modeling of Three Post-Common Envelope Binaries: Hybrid Solutions
- Magneto-hydrodynamical origin of eclipsing time variations in post-common-envelope binaries for solar mass secondaries
- Origin of eclipsing time variations in Post-Common-Envelope binaries: role of the centrifugal force
- Eclipse timing variations in 7 post-common envelope binaries: an update on recent circumbinary models
- NSVS 14256825: period variation and orbital stability analysis of two possible substellar companions
- Investigating the System Configuration of Kepler-451 through Orbital Period Variations: Dynamical and Magnetic Interpretations