A Framework for Planet Detection with Faint Light-curve Echoes

@article{Mann2018AFF,
  title={A Framework for Planet Detection with Faint Light-curve Echoes},
  author={Chris Mann and Christopher A. Tellesbo and Benjamin C. Bromley and Scott J. Kenyon},
  journal={The Astronomical Journal},
  year={2018},
  volume={156}
}
A stellar flare can brighten a planet in orbit around its host star, producing a light curve with a faint echo. This echo, and others from subsequent flares, can lead to the planet’s discovery, revealing its orbital configuration and physical characteristics. A challenge is that an echo is faint relative to the flare and measurement noise. Here we use a method, based on autocorrelation function estimation, to extract faint planetary echoes from stellar flare light curves. A key component of our… 

Seeking Echoes of Circumstellar Disks in Kepler Light Curves

Light echoes of flares on active stars offer the opportunity for direct detection of circumstellar dust. We revisit the problem of identifying faint echoes in postflare light curves, focusing on

Finding exoplanets in the habitable zone with light echoes

In practice, technologies attempting to recover direct images of extra-solar planets run into noise floors governed by systematics (most notably, quasi-static speckles) before reaching fundamental

References

SHOWING 1-10 OF 56 REFERENCES

The Direct Detection and Characterization of M-dwarf Planets Using Light Echoes

Exoplanets orbiting M-dwarf stars are a prime target in the search for life in the universe. M-dwarf stars are active, with powerful flares that could adversely impact prospects for life, though

Light Echo Detection of Circumstellar Disks around Flaring Stars

Abstract Light echoes can be used to detect and characterize disks around flaring stars. Such disks are thought to be a hallmark of planet formation but are very difficult to detect by ordinary

Observability of Scattered-Light Echoes around Variable Stars and Cataclysmic Events

Scattered-light echoes from variable and cataclysmic stars offer one of the most effective means to probe the structure and composition of circumstellar and interstellar media. I build a simple model

Direct Imaging of Multiple Planets Orbiting the Star HR 8799

High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units.

Kepler Planet-Detection Mission: Introduction and First Results

The planetary findings derived from the first six weeks of observations with the Kepler mission are summarized, which include the detection of five new exoplanets, which confirm the existence of planets with densities substantially lower than those predicted for gas giant planets.

WHITE-LIGHT FLARES ON COOL STARS IN THE KEPLER QUARTER 1 DATA

We present the results of a search for white-light flares on ∼23,000 cool dwarfs in the Kepler Quarter 1 long cadence data. We have identified 373 flaring stars, some of which flare multiple times

PLATO: a multiple telescope spacecraft for exo-planets hunting

PLATO stands for PLAnetary Transits and Oscillation of stars and is a Medium sized mission selected as M3 by the European Space Agency as part of the Cosmic Vision program. The strategy behind is to

M DWARF FLARES FROM TIME-RESOLVED SLOAN DIGITAL SKY SURVEY SPECTRA

We have identified 63 flares on M dwarfs from the individual component spectra in the Sloan Digital Sky Survey (SDSS) using a novel measurement of emission-line strength called the Flare Line Index.

Light Echoes of Transients and Variables in the Local Universe

Abstract Astronomical light echoes, the time-dependent light scattered by dust in the vicinity of varying objects, have been recognized for over a century. Initially, their utility was thought to be

AN ALL-SKY CATALOG OF BRIGHT M DWARFS

We present an all-sky catalog of M dwarf stars with apparent infrared magnitude J < 10. The 8889 stars are selected from the ongoing SUPERBLINK survey of stars with proper motion μ > 40 mas yr−1,
...