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19912026
Showing 2016 · astro-ph.EPShow all

40 papers · 2 filters

astro-ph.EP2016★ 99 cited

Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD206893

Julien Milli, Pascale Hibon, Valentin Christiaens +30

Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, com…

astro-ph.EP2016★ 11 cited

Stability of sulphur dimers S2 in cometary ices

O. Mousis, O. Ozgurel, J. I. Lunine +5

S2 has been observed for decades in comets, including comet 67P/Churyumov-Gerasimenko. Despite the fact that this molecule appears ubiquitous in these bodies, the nature of its sou…

astro-ph.EP2016★ 37 cited

Lidov-Kozai Mechanism in Hydrodynamical Disks: Linear Stability Analysis

J. J. Zanazzi, Dong Lai

Recent SPH simulations by Martin et al. (2014) suggest a circumstellar gaseous disk may exhibit coherent eccentricity-inclination oscillations due to the tidal forcing of an inclin…

astro-ph.EP2016★ 28 cited

Migration of Planets Into and Out of Mean Motion Resonances in Protoplanetary Disks: Analytical Theory of Second-Order Resonances

Wenrui Xu, Dong Lai

Recent observations of Kepler multi-planet systems have revealed a number of systems with planets very close to second-order mean motion resonances (MMRs, with period ratio ,…

astro-ph.EP2016★ 10 cited

Spectroscopic characterisation of microlensing events Towards a new interpretation of OGLE-2011-BLG-0417

A. Santerne, J. -P. Beaulieu, B. Rojas Ayala +14

The microlensing event OGLE-2011-BLG-0417 is an exceptionally bright lens binary that was predicted to present radial velocity variation at the level of several km/s. Pioneer radia…

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★ 10 cited

Thermal Properties and an Improved Shape Model for Near-Earth Asteroid (162421) 2000 ET70

Sean E. Marshall, Ellen S. Howell, Christopher Magri +8

We present thermal properties and an improved shape model for potentially hazardous asteroid (162421) 2000 ET70. In addition to the radar data from 2000 ET70's apparition in 2012,…

astro-ph.EP2016★ 45 cited

Long-Lived Dust Asymmetries at Dead Zone Edges in Protoplanetary Disks

Ryan Miranda, Hui Li, Shengtai Li +1

A number of transition disks exhibit significant azimuthal asymmetries in thermal dust emission. One possible origin for these asymmetries is dust trapping in vortices formed at th…

astro-ph.EP2016★ 21 cited

Imaging an 80 AU Radius Dust Ring Around the F5V Star HD 157587

Maxwell A. Millar-Blanchaer, Jason Wang, Paul Kalas +55

We present -band near-infrared polarimetric imaging observations of the F5V star HD~157587 obtained with the Gemini Planet Imager (GPI) that reveal the debris disk as a bright r…

astro-ph.EP2016★ 8 cited

Derivation of Capture Probabilities for the Corotation Eccentric Mean Motion Resonances

Maryame El Moutamid, Bruno Sicardy, Stéfan Renner

We study in this paper the capture of a massless particle into an isolated, first order Corotation Eccentric Resonance (CER), in the framework of the Planar, Eccentric and Restrict…

astro-ph.EP2016★ 152 cited

A Catalog of Kepler Habitable Zone Exoplanet Candidates

Stephen R. Kane, Michelle L. Hill, James F. Kasting +11

The NASA Kepler mission has discovered thousands of new planetary candidates, many of which have been confirmed through follow-up observations. A primary goal of the mission is to…

astro-ph.EP2016★ 40 cited

Possible Internal Structures and Compositions of Proxima Centauri b

B. Brugger, O. Mousis, M. Deleuil +1

We explore the possible Proxima Centauri b's interiors assuming the planet belongs to the class of dense solid planets (rocky with possible addition of water) and derive the corres…

astro-ph.EP2016★ 74 cited

Discovery of a Substellar Companion to the Nearby Debris Disk Host HR 2562

Quinn M. Konopacky, Julien Rameau, Gaspard Duchene +54

We present the discovery of a brown dwarf companion to the debris disk host star HR 2562. This object, discovered with the Gemini Planet Imager (GPI), has a projected separation of…

astro-ph.EP2016★ 98 cited

The Orbit and Transit Prospects for Pictoris b constrained with One Milliarcsecond Astrometry

Jason J. Wang, James R. Graham, Laurent Pueyo +51

A principal scientific goal of the Gemini Planet Imager (GPI) is obtaining milliarcsecond astrometry to constrain exoplanet orbits. However, astrometry of directly imaged exoplanet…

astro-ph.EP2016★ 41 cited

Could Cirrus Clouds Have Warmed Early Mars?

Ramses M. Ramirez, James F. Kasting

The presence of the ancient valley networks on Mars indicates that the climate at 3.8 Ga was warm enough to allow substantial liquid water to flow on the martian surface for extend…

astro-ph.EP2016★ 59 cited

The Canada-France Ecliptic Plane Survey (CFEPS) - High Latitude Component

J-M. Petit, J. J. Kavelaars, B. J. Gladman +8

We report the orbital distribution of the Trans-Neptunian objects (TNOs) discovered during the High Ecliptic Latitude (HiLat) extension of the Canada-France Ecliptic Plane Survey (…

astro-ph.EP2016★ 25 cited

Solar Obliquity Induced by Planet Nine: Simple Calculation

Dong Lai

Bailey et al.~(2016) and Gomes et al.~(2016) recently suggested that the 6 degree misalignment between the Sun's rotational equator and the orbital plane of the major planets may b…

astro-ph.EP2016★ 73 cited

Geomorphologic Mapping of Titan's Polar Terrains: Constraining Surface Processes and Landscape Evolution

Samuel Birch, Alexander Hayes, William Dietrich +18

We present a geomorphologic map of Titan's polar terrains. The map was generated from a combination of Cassini Synthetic Aperture Radar (SAR) and Imaging Science Subsystem imaging…

astro-ph.EP2016★ 16 cited

Biofluorescent Worlds II. Biological fluorescence induced by stellar UV flares, a new temporal biosignature

Jack T. O'Malley-James, Lisa Kaltenegger

Our first targets in the search for signs of life are orbiting nearby M stars, such as the planets in the Proxima Centauri, Ross-128, LHS-1140, and TRAPPIST-1 systems. Future groun…

astro-ph.EP2016★ 27 cited

Dynamics of Stellar Spin Driven by Planets Undergoing Lidov-Kozai Migration: Paths to Spin-Orbit Misalignment

Natalia I. Storch, Dong Lai, Kassandra R. Anderson

Many exoplanetary systems containing hot Jupiters (HJs) exhibit significant misalignment between the spin axes of the host stars and the orbital angular momentum axes of the planet…

astro-ph.EP2016★ 34 cited

A Herschel view of protoplanetary disks in the Ori cluster

Karina Maucó, Jesús Hernández, Nuria Calvet +6

We present new Herschel PACS observations of 32 T Tauri stars in the young (3 Myr) Ori cluster. Most of our objects are K & M stars with large excesses at 24 m. We use…

astro-ph.EP2016★ 88 cited

Planetary engulfment as a trigger for white dwarf pollution

Cristobal Petrovich, Diego J. Muñoz

The presence of a planetary system can shield a planetesimal disk from the secular gravitational perturbations due to distant outer massive objects (planets or stellar companions).…

astro-ph.EP2016★ 67 cited

Hiding Planets Behind a Big Friend: Mutual Inclinations of Multi-Planet Systems with External Companions

Dong Lai, Bonan Pu

The {\it Kepler} mission has detected thousands of planetary systems with 1-7 transiting planets packed within 0.7~au from their host stars. There is an apparent excess of single-t…

astro-ph.EP2016★ 17 cited

Reduced Activity And Large Particles From the Disintegrating Planet Candidate KIC 12557548b

Everett Schlawin, Terry Herter, Ming Zhao +2

The intriguing exoplanet candidate KIC 12557548b is believed to have a comet-like tail of dusty debris trailing a small rocky planet. The tail of debris scatters up to 1.3% of the…