Characterizing Distant Worlds with Asterodensity Profiling

@article{Kipping2014CharacterizingDW,
  title={Characterizing Distant Worlds with Asterodensity Profiling},
  author={David M. Kipping},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2014},
  volume={440},
  pages={2164-2184}
}
  • D. Kipping
  • Published 5 November 2013
  • Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
Eclipsing systems, such as transiting exoplanets, allow one to measure the mean stellar density of the host star under various idealized assumptions. Asterodensity Profiling (AP) compares this density to an independently determined value in order to check the validity of the assumptions and ultimately derive useful parameters. Several physical effects can cause said assumptions to become invalid, with the most well-known example being the so-called photo-eccentric effect. In this work, we… 

Figures from this paper

Limb darkening and exoplanets – II. Choosing the best law for optimal retrieval of transit parameters
Very precise measurements of exoplanet transit lightcurves both from ground and space based observatories make it now possible to fit the limb-darkening coefficients in the transit-fitting procedure
Validation of HD 183579b Using Archival Radial Velocities: A Warm Neptune Orbiting a Bright Solar Analog
As exoplanetary science matures into its third decade, we are increasingly offered the possibility of pre-existing, archival observations for newly detected candidates. This is particularly poignant
Absolute densities in exoplanetary systems: photodynamical modelling of Kepler-138
In favourable conditions, the density of transiting planets in multiple systems can be determined from photometry data alone. Dynamical information can be extracted from light curves, providing
A HIGH FALSE POSITIVE RATE FOR KEPLER PLANETARY CANDIDATES OF GIANT STARS USING ASTERODENSITY PROFILING
Asterodensity profiling (AP) is a relatively new technique for studying transit light curves. By comparing the mean stellar density derived from the transit light curve to that found through an
Extrasolar Planetary Transits
An extrasolar planet will transit the visible hemisphere of its host star if its orbital plane lies sufficiently close to the observer’s line of sight. The resulting periodic dips in stellar flux
A novel method for identifying exoplanetary rings
TLDR
This work describes the method in detail, develops the basic underlying formalism, and test it in the parameter space of rings and transit configuration, discussing the prospects of using this method for the first systematic search of exoplanetary rings in the Kepler database and providing a basic computational code for implementing it.
VALIDATION OF 12 SMALL KEPLER TRANSITING PLANETS IN THE HABITABLE ZONE
We present an investigation of 12 candidate transiting planets from Kepler with orbital periods ranging from 34 to 207 days, selected from initial indications that they are small and potentially in
What asteroseismology can do for exoplanets
We describe three useful applications of asteroseismology in the context of exoplanet science: (1) the detailed characterisation of exoplanet host stars; (2) the measurement of stellar inclinations;
A Low-mass Exoplanet Candidate Detected by K2 Transiting the Praesepe M Dwarf JS 183
We report the discovery of a repeating photometric signal from a low-mass member of the Praesepe open cluster that we interpret as a Neptune-sized transiting planet. The star is JS 183 (HSHJ 163,
Transit Timing and Duration Variations for the Discovery and Characterization of Exoplanets
Transiting exoplanets in multi-planet systems have non-Keplerian orbits which can cause the times and durations of transits to vary. The theory and observations of transit timing variations (TTV) and
...
...

References

SHOWING 1-10 OF 47 REFERENCES
A novel method to photometrically constrain orbital eccentricities: Multibody Asterodensity Profiling
We present a novel method to determine eccentricity constraints of extrasolar planets in systems with multiple transiting planets through photometry alone. Our method is highly model independent,
Atmospheric Lensing and Oblateness Effects during an Extrasolar Planetary Transit
Future high-precision photometric measurements of transiting extrasolar planets promise to tell us much about the characteristics of these systems. We examine how atmospheric lensing and (projected)
Investigations of approximate expressions for the transit duration
In this work, we investigate the accuracy of various approximate expressions for the transit duration of a detached binary against the exact solution, found through solving a quartic equation.
An analytic model for rotational modulations in the photometry of spotted stars
Photometric rotational modulations due to starspots remain the most common and accessible way to study stellar activity. In the Kepler-era, there now exists precise, continuous photometry of ∼150 000
The Photoeccentric Effect and Proto-Hot-Jupiters I. Measuring photometric eccentricities of individual transiting planets
Exoplanet orbital eccentricities offer valuable clues about the history of planetary systems. Eccentric, Jupiter-sized planets are particularly interesting: they may link the "cold" Jupiters beyond
THE DISTRIBUTION OF TRANSIT DURATIONS FOR KEPLER PLANET CANDIDATES AND IMPLICATIONS FOR THEIR ORBITAL ECCENTRICITIES
Doppler planet searches have discovered that giant planets follow orbits with a wide range of orbital eccentricities, revolutionizing theories of planet formation. The discovery of hundreds of
Improving Stellar and Planetary Parameters of Transiting Planet Systems: The Case of TrES-2
We report on a spectroscopic determination of the atmospheric parameters and chemical abundance of the parent star of the recently discovered transiting planet TrES-2. A detailed LTE analysis of a
Morphological Lightcurve Distortions due to Finite Integration Time
ABSTRACT We explore how finite integration times or equivalently temporal binning inducesmorphological distortions to the transit lightcurve. These distortions, if uncorrectedfor, lead to the
Dynamical Origin of Extrasolar Planet Eccentricity Distribution
We explore the possibility that the observed eccentricity distribution of extrasolar planets arose through planet-planet interactions, after the initial stage of planet formation was complete. Our
PREDICTING PHOTOMETRIC AND SPECTROSCOPIC SIGNATURES OF RINGS AROUND TRANSITING EXTRASOLAR PLANETS
We present theoretical predictions for the photometric and spectroscopic signatures of rings around transiting extrasolar planets. On the basis of a general formulation for the transiting signature
...
...