THE MASS OF Kepler-93b AND THE COMPOSITION OF TERRESTRIAL PLANETS

@article{Dressing2014THEMO,
  title={THE MASS OF Kepler-93b AND THE COMPOSITION OF TERRESTRIAL PLANETS},
  author={Courtney D. Dressing and David Charbonneau and Xavier Dumusque and S. J. Gettel and Francesco A. Pepe and Andrew Collier Cameron and David W. Latham and Emilio Molinari and St{\'e}phane Udry and L. Affer and Aldo Stefano Bonomo and Lars A. Buchhave and Rosario Cosentino and Pedro Figueira and Aldo Fiorenzano and A. Harutyunyan and Rapha{\"e}lle D. Haywood and John Asher Johnson and Mercedes L{\'o}pez-Morales and Christophe Lovis and Luca Malavolta and Michel Mayor and Giusi Micela and Fatemeh Motalebi and Valerio Nascimbeni and David F. Phillips and Giampaolo Piotto and Don Pollacco and Didier Queloz and Ken Rice and Dimitar D. Sasselov and Damien S{\'e}gransan and Alessandro Sozzetti and Andrew Szentgyorgyi and Christopher A. Watson},
  journal={The Astrophysical Journal},
  year={2014},
  volume={800}
}
Kepler-93b is a 1.478 ± 0.019 R⊕ planet with a 4.7 day period around a bright (V = 10.2), astroseismically characterized host star with a mass of 0.911 ± 0.033 M☉ and a radius of 0.919 ± 0.011 R☉. Based on 86 radial velocity observations obtained with the HARPS-N spectrograph on the Telescopio Nazionale Galileo and 32 archival Keck/HIRES observations, we present a precise mass estimate of 4.02 ± 0.68 M⊕. The corresponding high density of 6.88 ± 1.18 g cm−3 is consistent with a rocky composition… 

REVISED MASSES AND DENSITIES OF THE PLANETS AROUND KEPLER-10

Determining which small exoplanets have stony-iron compositions is necessary for quantifying the occurrence of such planets and for understanding the physics of planet formation. Kepler-10 hosts the

Mass Constraints of the WASP-47 Planetary System from Radial Velocities

We report precise radial velocity (RV) measurements of WASP-47, a G star that hosts three transiting planets in close proximity (a hot Jupiter, a super-Earth, and a Neptune-sized planet) and a

THE KEPLER-454 SYSTEM: A SMALL, NOT-ROCKY INNER PLANET, A JOVIAN WORLD, AND A DISTANT COMPANION

Kepler-454 (KOI-273) is a relatively bright (V = 11.69 mag), Sun-like star that hosts a transiting planet candidate in a 10.6 day orbit. From spectroscopy, we estimate the stellar temperature to be

Using HARPS-N to characterize the long-period planets in the PH-2 and Kepler-103 systems

We present confirmation of the planetary nature of PH-2b, as well as the first mass estimates for the two planets in the Kepler-103 system. PH-2b and Kepler-103c are both long-period and

Precise Masses in the WASP-47 System

We present precise radial velocity observations of WASP-47, a star known to host a hot Jupiter, a distant Jovian companion, and, uniquely, two additional transiting planets in short-period orbits: a

A Second Terrestrial Planet Orbiting the Nearby M Dwarf LHS 1140

LHS 1140 is a nearby mid-M dwarf known to host a temperate rocky super-Earth (LHS 1140 b) on a 24.737-day orbit. Based on photometric observations by MEarth and Spitzer as well as Doppler

The Kepler-19 System: A Thick-envelope Super-Earth with Two Neptune-mass Companions Characterized Using Radial Velocities and Transit Timing Variations

We report a detailed characterization of the Kepler-19 system. This star was previously known to host a transiting planet with a period of 9.29 days, a radius of 2.2 R⊕, and an upper limit on the

A 1.9 Earth radius rocky planet and the discovery of a non-transiting planet in the Kepler-20 system

Kepler-20 is a solar-type star (V = 12.5) hosting a compact system of five transiting planets, all packed within the orbital distance of Mercury in our own Solar System. A transition from rocky to

K2-106, a system containing a metal-rich planet and a planet of lower density

Planets in the mass range from 2 to 15 M_Earth are very diverse. Some of them have low densities, while others are very dense. By measuring the masses and radii, the mean densities, structure, and

Three Super-Earths Transiting the Nearby Star GJ 9827

We report on the discovery of three transiting planets around GJ 9827. The planets have radii of 1.75 ± 0.18, 1.36 ± 0.14, and R⊕, and periods of 1.20896, 3.6480, and 6.2014 days, respectively. The
...

References

SHOWING 1-10 OF 51 REFERENCES

KEPLER-93b: A TERRESTRIAL WORLD MEASURED TO WITHIN 120 km, AND A TEST CASE FOR A NEW SPITZER OBSERVING MODE

We present the characterization of the Kepler-93 exoplanetary system, based on three years of photometry gathered by the Kepler spacecraft. The duration and cadence of the Kepler observations, in

THE KEPLER-10 PLANETARY SYSTEM REVISITED BY HARPS-N: A HOT ROCKY WORLD AND A SOLID NEPTUNE-MASS PLANET

Kepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of the planet was measured with a precision

MOST 1.6 EARTH-RADIUS PLANETS ARE NOT ROCKY

The Kepler mission, combined with ground-based radial velocity (RV) follow-up and dynamical analyses of transit timing variations, has revolutionized the observational constraints on

CHARACTERIZING K2 PLANET DISCOVERIES: A SUPER-EARTH TRANSITING THE BRIGHT K DWARF HIP 116454

We report the first planet discovery from the two-wheeled Kepler (K2) mission: HIP 116454 b. The host star HIP 116454 is a bright (V = 10.1, K = 8.0) K1 dwarf with high proper motion and a

A rocky composition for an Earth-sized exoplanet

Doppler spectroscopic measurements of the mass of the Earth-sized planet Kepler-78b are reported, which is similar to Earth’s, suggesting a composition of rock and iron.

An Earth-sized planet with an Earth-like density

The planet Kepler-78b was discovered and found to have a radius of only 1.16, and the mass of this planet is 1.86 Earth masses, which implies a composition of iron and rock similar to that of the Earth.

THE HUNT FOR EXOMOONS WITH KEPLER (HEK). IV. A SEARCH FOR MOONS AROUND EIGHT M DWARFS

With their smaller radii and high cosmic abundance, transiting planets around cool stars hold a unique appeal. As part of our ongoing project to measure the occurrence rate of extrasolar moons, in

MASSES, RADII, AND ORBITS OF SMALL KEPLER PLANETS: THE TRANSITION FROM GASEOUS TO ROCKY PLANETS

We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7 revealed by precise

Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities

Another violation of the orbit-composition pattern is reported: two planets orbiting the same star with orbital distances differing by only 10% and densities differing by a factor of 8, likely a rocky “super-Earth,” whereas the other is more akin to Neptune.

A super-Earth transiting a nearby low-mass star

Observations of the transiting planet GJ’1214b are reported, finding that the planetary mass and radius are consistent with a composition of primarily water enshrouded by a hydrogen–helium envelope that is only 0.05% of the mass of the planet.
...