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Planetary debris is observed in the atmospheres of over 1,000 white dwarfs, and two white dwarfs are now observed to contain orbiting minor planets. Exoasteroids and planetary core fragments achieve orbits close to the white dwarf through…

Earth and Planetary Astrophysics · Physics 2019-09-18 Kyriaki I. Antoniadou , Dimitri Veras

This thesis focuses on the detection of extrasolar planets via the transit method, and more specifically addresses issues relevant to the preparation of upcoming space missions such as CoRoT, Kepler, Eddington, aiming to detect terrestrial…

Astrophysics · Physics 2007-05-23 Suzanne Aigrain

We report the discovery of a white dwarf exhibiting deep, irregularly shaped transits, indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry of ZTF$\,$J013906.17+524536.89 and follow-up observations…

Chinese Space Station Telescope (CSST), which will begin its scientific operations around 2027, is going to survey the sky area of the median-to-high Galactic latitude and median-to-high ecliptic latitude. The high astrometric precision of…

Earth and Planetary Astrophysics · Physics 2025-12-30 Yifan Xuan , Fabo Feng , Zhensen Fu , Shilong Liao , Zhaoxiang Qi , Yang Chen

We present the results of an extensive study of the detectability of Earth-sized planets and super-Earths in the habitable zones of cool and low-mass stars using transit timing variation method. We have considered a system consisting of a…

Earth and Planetary Astrophysics · Physics 2015-05-28 Nader Haghighipour , Sabrina Kirste

Kepler will monitor enough stars that it is likely to detect single transits of planets with periods longer than the mission lifetime. We show that by combining the Kepler photometry of such transits with precise radial velocity (RV)…

Astrophysics · Physics 2009-11-13 Jennifer C. Yee , B. Scott Gaudi

Terrestrial planets are easier to detect around M dwarfs than other types of stars, making them promising for next-generation atmospheric characterization studies. The $TESS$ mission has greatly increased the number of known M dwarf planets…

Earth and Planetary Astrophysics · Physics 2022-12-14 Madison Brady , Jacob Bean

Transits of bright stars offer a unique opportunity to study detailed properties of extrasolar planets that cannot be determined through radial-velocity observations. We propose a technique to find such systems using all-sky small-aperture…

Astrophysics · Physics 2009-11-10 Joshua Pepper , Andrew Gould , D. L. DePoy

The Transit Timing Variations (TTVs) technique provides a powerful tool to detect additional planets in transiting exoplanetary systems. In this paper we show how transiting planets with significant TTVs can be systematically missed, or…

Earth and Planetary Astrophysics · Physics 2015-05-28 Enrique Garcia-Melendo , Mercedes Lopez-Morales

Context: TESS has been successfully launched and has begin data acquisition. To expedite the science that may be performed with the resulting data it is necessary to gain a good understanding of planetary yields. Given the observing…

Earth and Planetary Astrophysics · Physics 2018-11-21 Benjamin F. Cooke , Don Pollacco , Richard West , James McCormac , Peter J. Wheatley

The era of exoplanet characterization is upon us. For a subset of exoplanets -- the transiting planets -- physical properties can be measured, including mass, radius, and atmosphere characteristics. Indeed, measuring the atmospheres of a…

Astrophysics · Physics 2015-05-13 S. Seager , D. Deming , J. A. Valenti

With the imminent start of the Legacy Survey for Space and Time (LSST) on the Vera C. Rubin Observatory, and several new space telescopes expected to begin operations later in this decade, both time domain and wide-field astronomy are on…

Astrophysics of Galaxies · Physics 2020-09-02 Nicholas J. Fantin , Patrick Côté , Alan McConnachie

We present the discovery of deep, irregular, periodic transits towards the white dwarf ZTF$\,$J1944$+$4557 using follow-up time-series photometry and spectroscopy from Palomar, Keck, McDonald, Perkins, and Lowell observatories. We find a…

This paper reviews the basic technical characteristics of the ground-based photometric searches for transiting planets, and discusses a possible observational selection effect. I suggest that additional photometric observations of the…

Earth and Planetary Astrophysics · Physics 2009-08-18 Tsevi Mazeh

We demonstrate that the James Webb Space Telescope (JWST) can detect infrared (IR) excess from the blended light spectral energy distribution of spatially unresolved terrestrial exoplanets orbiting nearby white dwarfs. We find that JWST is…

Metal pollution in white dwarf atmospheres may be the accreted remnants of planetary objects. After the discovery of disintegrating planetary objects transiting WD 1145+017 (Vanderburg et al. 2015), undergraduates in the University of…

For the last three years we have performed a survey for young (<3 Gyrs) giant planets around nearby white dwarfs with HST, Spitzer, and VLT. Direct HST/NICMOS imaging of the seven white dwarfs in the Hyades gave no evidence for companions…

Astrophysics · Physics 2007-05-23 S. Friedrich , H. Zinnecker , S. Correia , W. Brandner , M. Burleigh , M. McCaughrean

We propose that the presence of additional planets in extrasolar planetary systems can be detected by long-term transit timing studies. If a transiting planet is on an eccentric orbit then the presence of another planet causes a secular…

Astrophysics · Physics 2008-11-26 Jeremy S. Heyl , Brett J. Gladman

We investigate whether rings around extrasolar planets could be detected from those planets' transit lightcurves. To this end we develop a basic theoretical framework for calculating and interpreting the lightcurves of ringed planet…

Astrophysics · Physics 2009-11-10 Jason W. Barnes , Jonathan J. Fortney

We investigate the possibility of detecting planetary or stellar companions orbiting white dwarf binaries using the LISA gravitational radiation detector. Specifically, we consider the acceleration of the barycenter of the white dwarf…

Earth and Planetary Astrophysics · Physics 2018-12-11 Jason H. Steffen , Dong-Hong Wu , Shane L. Larson