Showing 2016 · astro-ph.EPShow all

21 papers · 2 filters

astro-ph.EP2016★ 111 cited

Aeronomical constraints to the minimum mass and maximum radius of hot low-mass planets

L. Fossati, N. V. Erkaev, H. Lammer +7

Stimulated by the discovery of a number of close-in low-density planets, we generalise the Jeans escape parameter taking hydrodynamic and Roche lobe effects into account. We furthe…

astro-ph.EP2016★ 32 cited

Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems

Amaury H. M. J. Triaud, Marion Neveu-VanMalle, Monika Lendl +16

We report the detection of two new systems containing transiting planets. Both were identified by WASP as worthy transiting planet candidates. Radial-velocity observations quickly…

astro-ph.EP2016★ 58 cited

An Overabundance of Low-density Neptune-like Planets

Patricio Cubillos, Nikolai V. Erkaev, Ines Juvan +6

We present a uniform analysis of the atmospheric escape rate of Neptune-like planets with estimated radius and mass (restricted to ). For each planet we c…

astro-ph.EP2016★ 47 cited

Spheroidal and ellipsoidal harmonic expansions of the gravitational potential of small Solar System bodies. Case study: Comet 67P/Churyumov-Gerasimenko

Stefan Reimond, Oliver Baur

Gravitational features are a fundamental source of information to learn more about the interior structure and composition of planets, moons, asteroids and comets. Gravitational fie…

astro-ph.EP2016★ 141 cited

On Correlated-noise Analyses Applied To Exoplanet Light Curves

Patricio Cubillos, Joseph Harrington, Thomas J. Loredo +3

Time-correlated noise is a significant source of uncertainty when modeling exoplanet light-curve data. A correct assessment of correlated noise is fundamental to determine the true…

astro-ph.EP2016★ 91 cited

Rossiter--McLaughlin models and their effect on estimates of stellar rotation, illustrated using six WASP systems

D. J. A. Brown, A. H. M. J. Triaud, A. P. Doyle +12

We present new measurements of the projected spin--orbit angle for six WASP hot Jupiters, four of which are new to the literature (WASP-61, -62, -76, and -78), and two of which…

astro-ph.EP2016★ 15 cited

Gravity field and solar component of the precession rate and nutation coefficients of Comet 67P Churyumov-Gerasimenko

Christoph Lhotka, Stefan Reimond, Jean Souchay +1

The aim of this study is first to determine the gravity field of the comet 67P Churyumov-Gerasimenko and second to derive the solar component of the precession rate and nutation co…

astro-ph.EP2016★ 17 cited

Charged dust grain dynamics subject to solar wind, Poynting-Robertson drag, and the interplanetary magnetic field

Christoph Lhotka, Philippe Bourdin, Yasuhito Narita

We investigate the combined effect of solar wind, Poynting-Robertson drag, and the frozen-in interplanetary magnetic field on the motion of charged dust grains in our solar system.…

astro-ph.EP2016★ 37 cited

Beaming structures of Jupiter's decametric common S-bursts observed from LWA1, NDA, and URAN2 radio telescopes

Masafumi Imai, Alain Lecacheux, Tracy E. Clarke +7

On 2015 February 21, simultaneous observations of Jupiter's decametric radio emission between 10 and 33 MHz were carried out using three powerful low-frequency radio telescopes: Lo…

astro-ph.EP2016★ 103 cited

Dynamics of Saturn's great storm of 2010-2011 from Cassini ISS and RPWS

Kunio M. Sayanagi, Ulyana A. Dyudina, Shawn P. Ewald +6

Saturn's quasi-periodic planet-encircling storms are the largest convecting outbursts in the Solar System. The last eruption was in 1990. A new eruption started in December 2010 an…

astro-ph.EP2016★ 26 cited

Discovery of WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities

S. C. C. Barros, D. J. A. Brown, G. Hébrard +37

We present the discovery and characterisation of the exoplanets WASP-113b and WASP-114b by the WASP survey, {\it SOPHIE} and {\it CORALIE}. The planetary nature of the systems was…

astro-ph.EP2016★ 79 cited

From dense hot Jupiter to low-density Neptune: The discovery of WASP-127b, WASP-136b and WASP-138b

K. W. F. Lam, F. Faedi, D. J. A. Brown +38

We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18 +/- 0.02 M_J and radius 1.37 +/- 0.04 R_J. This is…

astro-ph.EP2016★ 23 cited

On the ultraviolet anomalies of the WASP-12 and HD 189733 systems: Trojan satellites as a plasma source

K. G. Kislyakova, E. Pilat-Lohinger, B. Funk +6

We suggest an additional possible plasma source to explain part of the phenomena observed for the transiting hot Jupiters WASP-12b and HD 189733b in their ultraviolet (UV) light cu…

astro-ph.EP2016★ 22 cited

Poynting-Robertson drag and solar wind in the space debris problem

Christoph Lhotka, Alessandra Celletti, Catalin Gales

We analyze the combined effect of Poynting-Robertson and solar wind drag on space debris. We derive a model within Cartesian, Gaussian and Hamiltonian frameworks. We focus on the g…

astro-ph.EP2016★ 85 cited

WASP-South transiting exoplanets: WASP-130b, WASP-131b, WASP-132b, WASP-139b, WASP-140b, WASP-141b & WASP-142b

Coel Hellier, D. R. Anderson, A. Collier Cameron +16

We describe seven exoplanets transiting stars of brightness V = 10.1 to 12.4. WASP-130b is a "warm Jupiter" having an orbital period of 11.6 d around a metal-rich G6 star. Its mass…

astro-ph.EP2016★ 11 cited

WASP-157b, a Transiting Hot Jupiter Observed with K2

T. Močnik, D. R. Anderson, D. J. A. Brown +17

We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like densi…

astro-ph.EP2016★ 84 cited

Thermal mass loss of protoplanetary cores with hydrogen-dominated atmospheres: The influences of ionization and orbital distance

N. V. Erkaev, H. Lammer, P. Odert +4

We investigate the loss rates of the hydrogen atmospheres of terrestrial planets with a range of masses and orbital distances by assuming a stellar extreme ultraviolet (EUV) lumino…

astro-ph.EP2016★ 18 cited

MIDAS: Lessons learned from the first spaceborne atomic force microscope

Mark S. Bentley, Herman Arends, Bart Butler +6

The Micro-Imaging Dust Analysis System (MIDAS) atomic force microscope (AFM) onboard the Rosetta orbiter was the first such instrument launched into space in 2004. Designed only a…

astro-ph.EP2016★ 107 cited

Transiting Exoplanet Studies and Community Targets for JWST's Early Release Science Program

Kevin B. Stevenson, Nikole K. Lewis, Jacob L. Bean +49

The James Webb Space Telescope will revolutionize transiting exoplanet atmospheric science due to its capability for continuous, long-duration observations and its larger collectin…

astro-ph.EP2016★ 36 cited

Five transiting hot Jupiters discovered using WASP-South, Euler and TRAPPIST: WASP-119 b, WASP-124 b, WASP-126 b, WASP-129 b and WASP-133 b

P. F. L. Maxted, D. R. Anderson, A. Collier Cameron +17

We have used photometry from the WASP-South instrument to identify 5 stars showing planet-like transits in their light curves. The planetary nature of the companions to these stars…

astro-ph.EP2016★ 65 cited

FORS2 observes a multi-epoch transmission spectrum of the hot Saturn-mass exoplanet WASP-49b

M. Lendl, L. Delrez, M. Gillon +6

Context: Transmission spectroscopy has proven to be a useful tool for the study of exoplanet atmospheres, and has lead to the detection of a small number of elements and molecules…