A super-Earth transiting a nearby low-mass star

  title={A super-Earth transiting a nearby low-mass star},
  author={David Charbonneau and Zachory K. Berta and Jonathan M. Irwin and Christopher J. Burke and Philip Andrew Nutzman and Lars A. Buchhave and Christophe Lovis and Xavier Bonfils and David W. Latham and St{\'e}phane Udry and Ruth A. Murray-Clay and Matthew J. Holman and Emilio E. Falco and Joshua N. Winn and Didier Queloz and Francesco A. Pepe and Michel Mayor and Xavier Delfosse and Thierry Forveille},
A decade ago, the detection of the first transiting extrasolar planet provided a direct constraint on its composition and opened the door to spectroscopic investigations of extrasolar planetary atmospheres. Because such characterization studies are feasible only for transiting systems that are both nearby and for which the planet-to-star radius ratio is relatively large, nearby small stars have been surveyed intensively. Doppler studies and microlensing have uncovered a population of planets… 
A Super-Earth and Sub-Neptune Transiting the Late-type M Dwarf LP 791-18
Planets occur most frequently around cool dwarfs, but only a handful of specific examples are known to orbit the latest-type M stars. Using TESS photometry, we report the discovery of two planets
A temperate rocky super-Earth transiting a nearby cool star
Observations of LHS 1140b, a planet with a radius of 1.4 Earth radii transiting a small, cool star (L HS 1140) 12 parsecs away, measure the mass of the planet to be 6.6 times that of Earth, consistent with a rocky bulk composition, and place an upper limit on the orbital eccentricity.
Unlike hot Jupiters or other gas giants, super-Earths are expected to have a wide variety of compositions, ranging from terrestrial bodies like our own to more gaseous planets like Neptune.
Transiting super-Earth exoplanets : search and characterisation
The only way to measure the diameter of a planet outside the Solar System is if it transits its host star. Transit data combined with radial velocity (RV) data give an exoplanet’s mass. Mass and
A rocky planet transiting a nearby low-mass star
M-dwarf stars—hydrogen-burning stars that are smaller than 60 per cent of the size of the Sun—are the most common class of star in our Galaxy and outnumber Sun-like stars by a ratio of 12:1. Recent
We have detected transits of the innermost planet “e” orbiting 55 Cnc (V = 6.0), based on two weeks of nearly continuous photometric monitoring with the MOST space telescope. The transits occur with
Composition of transiting and transiting-only super-Earths
  • D. Valencia
  • Physics, Geology
    Proceedings of the International Astronomical Union
  • 2010
Abstract The relatively recent detections of the first three transiting super-Earths mark the beginning of a subfield within exoplanets that is both fruitful and challenging. The first step into
A ground-based transmission spectrum of the super-Earth exoplanet GJ 1214b
A ground-based measurement of the transmission spectrum of GJ 1214b between wavelengths of 780 and 1,000 nm is reported, finding the lack of features in this spectrum rules out cloud-free atmospheres composed primarily of hydrogen.
Recent results from the Kepler mission indicate that super-Earths (planets with masses between 1–10 times that of the Earth) are the most common kind of planet around nearby Sun-like stars. These
Visible and near-infrared spectra of transiting hot Jupiter planets have recently been observed, revealing some of the atmospheric constituents of their atmospheres. In the near future, it is


Detection of Planetary Transits Across a Sun-like Star
High-precision, high-cadence photometric measurements of the star HD 209458 are reported, which is known from radial velocity measurements to have a planetary-mass companion in a close orbit and the detailed shape of the transit curve due to both the limb darkening of thestar and the finite size of the planet is clearly evident.
Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing
The detection of a cool, sub-Neptune-mass planets may be more common than gas giant planets, as predicted by the core accretion theory, and is suggested to name OGLE-2005-BLG-390Lb, indicating a planetary mass companion to the lens star of the microlensing event.
The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system
The GJ 581 planetary system was already known to harbour three planets, including two presumably rocky planets which straddle its habitable zone. We report here the detection of an additional planet
A Transiting “51 Peg-like” Planet
Doppler measurements from Keck exhibit a sinusoidal periodicity in the velocities of the G0 dwarf HD 209458, having a semiamplitude of 81 m s-1 and a period of 3.5239 days, which is indicative of a
The HARPS search for southern extra-solar planets. XVII. Super-Earth and Neptune-mass planets in m
We report on the detection of two new multiple planet systems orbiting solar-like stars HD 47 186 and HD 181 433. The first system contains a hot Neptune of 22.78 M⊕ with a 4.08-day period and 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
Characterizing the Near-UV Environment of M Dwarfs
We report the results of our Hubble Space Telescope (HST) snapshot survey with the ACS HRC PR200L prism, designed to measure the near-UV emission in a sample of nearby M dwarfs. Thirty-three stars
A ~7.5 M⊕ Planet Orbiting the Nearby Star, GJ 876
High-precision, high-cadence radial velocity monitoring over the past 8 yr at the W. M. Keck Observatory reveals evidence for a third planet orbiting the nearby (4.69 pc) dM4 star GJ 876. The
Survey for Transiting Extrasolar Planets in Stellar Systems. III. A Limit on the Fraction of Stars with Planets in the Open Cluster NGC 1245
We analyze a 19 night photometric search for transiting extrasolar planets in the open cluster NGC 1245. An automated transit search algorithm with quantitative selection criteria finds six transit
Kepler’s Optical Phase Curve of the Exoplanet HAT-P-7b
The Kepler mission is performing at the level required to detect Earth-size planets orbiting solar-type stars, including data for the previously known giant transiting exoplanet HAT-P-7b, which shows a smooth rise and fall of light from the planet as it orbits its star, punctuated by a drop when the planet passes behind its star.