On the Detection of Exomoons Transiting Isolated Planetary-mass Objects

  title={On the Detection of Exomoons Transiting Isolated Planetary-mass Objects},
  author={Mary Anne Limbach and Johanna M. Vos and Joshua N. Winn and Ren{\'e} Heller and Jeffrey C. Mason and Adam C. Schneider and Fei Dai},
  journal={The Astrophysical Journal Letters},
  • M. LimbachJ. Vos F. Dai
  • Published 18 August 2021
  • Physics, Geology
  • The Astrophysical Journal Letters
All-sky imaging surveys have identified several dozen isolated planetary-mass objects (IPMOs) far away from any star. Here we examine the prospects for detecting transiting moons around these objects. We expect transiting moons to be common, occurring around 10%–15% of IPMOs, given that close-orbiting moons have a high geometric transit probability and are expected to be a common outcome of giant planet formation. The IPMOs offer an advantage over other directly imaged planets in that high… 

First Doppler Limits on Binary Planets and Exomoons in the HR 8799 System

We place the first constraints on binary planets and exomoons from Doppler monitoring of directly imaged exoplanets. We model radial velocity observations of HR 8799 b, c, and d from Ruffio et al.

The Perkins INfrared Exosatellite Survey (PINES). II. Transit Candidates and Implications for Planet Occurrence around L and T Dwarfs

We describe a new transit-detection algorithm designed to detect single-transit events in discontinuous Perkins INfrared Exosatellite Survey (PINES) observations of L and T dwarfs. We use this

Let the Great World Spin: Revealing the Stormy, Turbulent Nature of Young Giant Exoplanet Analogs with the Spitzer Space Telescope

We present a survey for photometric variability in young, low-mass brown dwarfs with the Spitzer Space Telescope. The 23 objects in our sample show robust signatures of youth and share properties



Evidence for a large exomoon orbiting Kepler-1625b

New observations of a candidate exomoon associated with Kepler-1625b using the Hubble Space Telescope are presented to validate or refute the moon’s presence, finding evidence in favor of the moon hypothesis, based on timing deviations and a flux decrement from the star consistent with a large transiting exomoons.

Detecting Exomoons via Doppler Monitoring of Directly Imaged Exoplanets

Teachey et al. recently reported the detection of a candidate exomoon, tentatively designated Kepler-1625b I, around a giant planet in the Kepler field. The candidate exomoon would be about the size


Direct imaging of extrasolar planets with future space-based coronagraphic telescopes may provide a means of detecting companion moons at wavelengths where the moon outshines the planet. We propose a

Design Considerations for a Ground-Based Transit Search for Habitable Planets Orbiting M Dwarfs

By targeting nearby M dwarfs, a transit search using modest equipment is capable of discovering planets as small as 2 R⊕ in the habitable zones of their host stars. The MEarth Project, a future


In the solar system, moons largely exceed planets in number. The Kepler database has been shown to be sensitive to exomoon detection down to the mass of Mars, but the first search has been


We report recent ground-based photometry of the transiting super-Earth exoplanet GJ 1214b at several wavelengths, including the infrared near 1.25 μm (J band). We observed a J-band transit with the

Formation, habitability, and detection of extrasolar moons.

It is shown that natural satellites in the range of 0.1-0.5 Earth mass are potentially habitable, can form within the circumplanetary debris and gas disk or via capture from a binary, and are detectable with current technology.

Transiting Exoplanet Survey Satellite

Abstract. The Transiting Exoplanet Survey Satellite (TESS) will search for planets transiting bright and nearby stars. TESS has been selected by NASA for launch in 2017 as an Astrophysics Explorer

Design Considerations for a Ground-based Search for Transiting Planets around L and T Dwarfs

We present design considerations for a ground-based survey for transiting exoplanets around L and T dwarfs, spectral classes that have yet to be thoroughly probed for planets. We simulate photometry

A probable giant planet imaged in the beta Pictoris disk. VLT/NaCo deep L'-band imaging

Context: Since the discovery of its dusty disk in 1984, β Pictoris has become the prototype of young early-type planetary systems, and there are now various indications that a massive Jovian planet