output
19962026
most citedThe Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III

2.5k citations

Showing 2012 · astro-ph.EPShow all

35 papers · 2 filters

astro-ph.EP2012★ 114 cited

Millimeter Emission Structure in the first ALMA Image of the AU Mic Debris Disk

Meredith A. MacGregor, David J. Wilner, Katherine A. Rosenfeld +9

We present 1.3 millimeter ALMA Cycle 0 observations of the edge-on debris disk around the nearby, ~10 Myr-old, M-type star AU Mic. These observations obtain 0.6 arcsec (6 AU) resol…

astro-ph.EP2012★ 88 cited

A DEBRIS Disk Around The Planet Hosting M-star GJ581 Spatially Resolved with Herschel

J. -F. Lestrade, B. C. Matthews, B. Sibthorpe +17

Debris disks have been found primarily around intermediate and solar mass stars (spectral types A-K) but rarely around low mass M-type stars. We have spatially resolved a debris di…

astro-ph.EP2012★ 297 cited

Chemical consequences of the C/O ratio on hot Jupiters: Examples from WASP-12b,CoRoT-2b, XO-1b, and HD 189733b

J. I. Moses, N. Madhusudhan, C. Visscher +1

Motivated by recent spectroscopic evidence for carbon-rich atmospheres on some transiting exoplanets, we investigate the influence of the C/O ratio on the chemistry, composition, a…

astro-ph.EP2012★ 21 cited

Of Horseshoes and Heliotropes: Dynamics of Dust in the Encke Gap

M. M. Hedman, J. A. Burns, D. P. Hamilton +1

The Encke Gap is a 320-km-wide opening in Saturn's outer A ring that contains the orbit of the small moon Pan and an array of dusty features composed of particles less than 100 mic…

astro-ph.EP2012★ 22 cited

A 3D general circulation model for Pluto and Triton with fixed volatile abundance and simplified surface forcing

Angela Zalucha, Timothy Michaels

We present a 3D general circulation model of Pluto and Triton's atmospheres, which uses radiative-conductive-convective forcing. In both the Pluto and Triton models, an easterly (p…

astro-ph.EP2012★ 44 cited

Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect

J. Durech, D. Vokrouhlicky, A. R. Baransky +28

The spin state of small asteroids can change on a long timescale by the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, the net torque that arises from anisotropically scatter…

astro-ph.EP2012★ 154 cited

Resolved Debris Discs Around A Stars in the Herschel DEBRIS Survey

Mark Booth, Grant Kennedy, Bruce Sibthorpe +12

The majority of debris discs discovered so far have only been detected through infrared excess emission above stellar photospheres. While disc properties can be inferred from unres…

astro-ph.EP2012★ 194 cited

Transit Timing Observations from Kepler: VII. Confirmation of 27 planets in 13 multiplanet systems via Transit Timing Variations and orbital stability

Jason H. Steffen, Daniel C. Fabrycky, Eric Agol +15

We confirm 27 planets in 13 planetary systems by showing the existence of statistically significant anti-correlated transit timing variations (TTVs), which demonstrates that the pl…

astro-ph.EP2012★ 269 cited

The Derivation, Properties and Value of Kepler's Combined Differential Photometric Precision

Jessie L. Christiansen, Jon M. Jenkins, Thomas S. Barclay +11

The Kepler Mission is searching for Earth-size planets orbiting solar-like stars by simultaneously observing >160,000 stars to detect sequences of transit events in the photometric…

astro-ph.EP2012★ 107 cited

Three-dimensional atmospheric circulation of hot Jupiters on highly eccentric orbits

Tiffany Kataria, Adam P. Showman, Nikole K. Lewis +3

Of the over 800 exoplanets detected to date, over half are on non-circular orbits, with eccentricities as high as 0.93. Such orbits lead to time-variable stellar heating, which has…

astro-ph.EP2012★ 225 cited

Alignment of the stellar spin with the orbits of a three-planet system

Roberto Sanchis-Ojeda, Daniel C. Fabrycky, Josh N. Winn +16

The Sun's equator and the planets' orbital planes are nearly aligned, which is presumably a consequence of their formation from a single spinning gaseous disk. For exoplanetary sys…

astro-ph.EP2012★ 103 cited

Outward Migration of Jupiter and Saturn in Evolved Gaseous Disks

Gennaro D'Angelo, Francesco Marzari

The outward migration of a pair of resonant-orbit planets, driven by tidal interactions with a gas-dominated disk, is studied in the context of evolved solar nebula models. The pla…

astro-ph.EP2012★ 391 cited

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

Joshua A. Carter, Eric Agol, William J. Chaplin +43

In the Solar system the planets' compositions vary with orbital distance, with rocky planets in close orbits and lower-density gas giants in wider orbits. The detection of close-in…

astro-ph.EP2012★ 134 cited

Herschel imaging of 61 Vir: implications for the prevalence of debris in low-mass planetary systems

M. C. Wyatt, G. Kennedy, B. Sibthorpe +15

This paper describes Herschel observations of the nearby (8.5pc) G5V multi-exoplanet host star 61 Vir at 70-500micron carried out by the DEBRIS survey. These reveal emission that i…

astro-ph.EP2012★ 285 cited

Masses, Radii, and Cloud Properties of the HR 8799 Planets

Mark S. Marley, Didier Saumon, Michael Cushing +3

The near-infrared colors of the planets directly imaged around the A star HR 8799 are much redder than most field brown dwarfs of the same effective temperature. Previous theoretic…

astro-ph.EP2012★ 24 cited

Remnant gas in evolved circumstellar disks: Herschel PACS observations of 10-100 Myr old disk systems

Vincent C. Geers, Uma Gorti, Michael R. Meyer +3

We present Herschel PACS spectroscopy of the [OI] 63 micron gas-line for three circumstellar disk systems showing signs of significant disk evolution and/or planet formation: HR 87…

astro-ph.EP2012★ 177 cited

Transit Detection in the MEarth Survey of Nearby M Dwarfs: Bridging the Clean-First, Search-Later Divide

Zachory K. Berta, Jonathan Irwin, David Charbonneau +2

In the effort to characterize the masses, radii, and atmospheres of potentially habitable exoplanets, there is an urgent need to find examples of such planets transiting nearby M d…

astro-ph.EP2012★ 74 cited

Long-Term Stability of Horseshoe Orbits

Matija Ćuk, Douglas P. Hamilton, Matthew J. Holman

Unlike Trojans, horseshoe coorbitals are not generally considered to be long-term stable (Dermott and Murray, 1981; Murray and Dermott, 1999). As the lifetime of Earth's and Venus'…

astro-ph.EP2012★ 72 cited

Free-free Emission and Radio Recombination Lines from Photoevaporating Disks

I. Pascucci, U. Gorti, D. Hollenbach

Recent infrared observations have demonstrated that photoevaporation driven by high-energy photons from the central star contributes to the dispersal of protoplanetary disks. Here,…

astro-ph.EP2012★ 3 cited

Constraining multiple systems with GAIA

L. Beauvalet, V. Lainey, J. -E. Arlot +3

GAIA will provide observations of some multiple asteroid and dwarf systems. These observations are a way to determine and improve the quantification of dynamical parameters, such a…

astro-ph.EP2012★ 484 cited

The Transiting Circumbinary Planets Kepler-34 and Kepler-35

William F. Welsh, Jerome A. Orosz, Joshua A. Carter +43

Most Sun-like stars in the Galaxy reside in gravitationally-bound pairs of stars called "binary stars". While long anticipated, the existence of a "circumbinary planet" orbiting su…

astro-ph.EP2012★ 18 cited

An investigation of a super-Earth exoplanet with a greenhouse-gas atmosphere using a general circulation model

Angela M. Zalucha, Timothy I. Michaels, Nikku Madhusudhan

We use the Massachusetts Institute of Technology general circulation model (GCM) dynamical core, in conjunction with a Newtonian relaxation scheme that relaxes to a gray, analytica…

astro-ph.EP2012★ 1.1k cited

Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data

Natalie M. Batalha, Jason F. Rowe, Stephen T. Bryson +69

New transiting planet candidates are identified in sixteen months (May 2009 - September 2010) of data from the Kepler spacecraft. Nearly five thousand periodic transit-like signals…

astro-ph.EP2012★ 724 cited

Architecture of Kepler's Multi-transiting Systems: II. New investigations with twice as many candidates

Daniel C. Fabrycky, Jack J. Lissauer, Darin Ragozzine +16

We report on the orbital architectures of Kepler systems having multiple planet candidates identified in the analysis of data from the first six quarters of Kepler data and reporte…