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19922026
Showing 2014 · astro-ph.EPShow all

52 papers · 2 filters

astro-ph.EP2014★ 379 cited

Gaps, Rings, and Non-Axisymmetric Structures in Protoplanetary Disks - From Simulations to ALMA Observations

M. Flock, J. P. Ruge, N. Dzyurkevich +3

Recent observations by the Atacama Large Millimeter/submillimeter Array (ALMA) of disks around young stars revealed distinct asymmetries in the dust continuum emission. In this wor…

astro-ph.EP2014★ 40 cited

Vortex cycles at the inner edges of dead zones in protoplanetary disks

Julien Faure, Sébatien Fromang, Henrik latter +1

In protoplanetary disks, the inner boundary between the turbulent and laminar regions is a promising site for planet formation because solids may become trapped at the interface it…

astro-ph.EP2014★ 73 cited

HCN ice in Titan's high-altitude southern polar cloud

Remco J. de Kok, Nicholas A. Teanby, Luca Maltagliati +2

Titan's middle atmosphere is currently experiencing a rapid change of season after northern spring arrived in 2009. A large cloud was observed for the first time above Titan's sout…

astro-ph.EP2014★ 24 cited

New insights on Saturn's formation from its nitrogen isotopic composition

Olivier Mousis, Jonathan I. Lunine, Leigh N. Fletcher +4

The recent derivation of a lower limit for the N/N ratio in Saturn's ammonia, which is found to be consistent with the Jovian value, prompted us to revise models of S…

astro-ph.EP2014★ 2 cited

Spin-orbit angle in compact planetary systems perturbed by an inclined companion. Application to the 55 Cancri system

Gwenaël Boué, Daniel C. Fabrycky

The stellar spin orientation relative to the orbital planes of multiplanet systems are becoming accessible to observations. For example, 55 Cancri is a system composed of 5 planets…

astro-ph.EP2014

Scaling laws to understand tidal dissipation in fluid planetary layers and stars

P. Auclair-Desrotour, S. Mathis, C. Le Poncin-Lafitte

Tidal dissipation is known as one of the main drivers of the secular evolution of planetary systems. It directly results from dissipative mechanisms that occur in planets and stars…

astro-ph.EP2014★ 91 cited

Performance of the VLT Planet Finder SPHERE I. Photometry and astrometry precision with IRDIS and IFS in laboratory

A. Zurlo, A. Vigan, D. Mesa +26

The new planet finder for the Very Large Telescope (VLT), the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), just had its first light in Paranal. A dedicated instr…

astro-ph.EP2014★ 67 cited

ALMA measurements of the HNC and HCN distributions in Titan's atmosphere

M. A. Cordiner, C. A. Nixon, N. A. Teanby +10

We present spectrally and spatially-resolved maps of HNC and HCN emission from Titan's atmosphere, obtained using the Atacama Large Millimeter/submillimeter Array (ALMA) on 201…

astro-ph.EP2014★ 30 cited

The surface signature of the tidal dissipation of the core in a two-layer planet

F. Remus, S. Mathis, J. -P. Zahn +1

Tidal dissipation, which is directly linked to internal structure, is one of the key physical mechanisms that drive systems evolution and govern their architecture. A robust evalua…

astro-ph.EP2014★ 40 cited

Signatures of massive collisions in debris discs

Quentin Kral, Philippe Thebault, Jean-Charles Augereau +2

Violent stochastic collisional events have been invoked as a possible explanation for some debris discs displaying pronounced asymmetries or having a great luminosity excess. So fa…

astro-ph.EP2014★ 299 cited

A ring system detected around the Centaur (10199) Chariklo

F. Braga-Ribas, B. Sicardy, J. L. Ortiz +61

Until now, rings have been detected in the Solar System exclusively around the four giant planets. Here we report the discovery of the first minor-body ring system around the Centa…

astro-ph.EP2014★ 105 cited

On the diversity of magnetic interactions in close-in star-planet systems

Antoine Strugarek, Allan Sacha Brun, Sean Patrick Matt +1

Magnetic interactions between close-in planets and their host star can play an important role in the secular orbital evolution of the planets, as well as the rotational evolution o…

astro-ph.EP2014★ 32 cited

Is the HD 15115 inner disk really asymmetrical ?

J. Mazoyer, A. Boccaletti, J. -C. Augereau +3

Context. Debris disks are intrinsically connected to the planetary system's formation and evolution. The development of high-contrast imaging techniques in the past 20 years is now…

astro-ph.EP2014★ 31 cited

SPOTS: The Search for Planets Orbiting Two Stars. I. Survey description and first observations

Christian Thalmann, Silvano Desidera, Mariangela Bonavita +13

Direct imaging surveys for exoplanets commonly exclude binary stars from their target lists, leaving a large part of the overall planet demography unexplored. To address this gap i…

astro-ph.EP2014★ 1 cited

Melting and metallization of silica in the cores of gas giants, ice giants and super Earths

S. Mazevet, T. Tsuchiya, T. Taniuchi +2

The physical state and properties of silicates at conditions encountered in the cores of gas giants, ice giants and of Earth like exoplanets now discovered with masses up to severa…

astro-ph.EP2014★ 17 cited

CoRoT-22 b: a validated 4.9 RE exoplanet in 10-day orbit

C. Moutou, J-M. Almenara, R. F. Diaz +36

The CoRoT satellite has provided high-precision photometric light curves for more than 163,000 stars and found several hundreds of transiting systems compatible with a planetary sc…

astro-ph.EP2014★ 85 cited

Mapping the release of volatiles in the inner comae of comets C/2012 F6 (Lemmon) and C/2012 S1 (ISON) using the Atacama Large Millimeter/Submillimeter Array

M. A. Cordiner, A. J. Remijan, J. Boissier +13

Results are presented from the first cometary observations using the Atacama Large Millimeter/Submillimeter Array (ALMA), including measurements of the spatially-resolved distribut…

astro-ph.EP2014★ 85 cited

Radio emissions from pulsar companions : a refutable explanation for galactic transients and fast radio bursts

Fabrice Mottez, Philippe Zarka

The six known highly dispersed fast radio bursts are attributed to extragalactic radio sources, of unknown origin but extremely energetic. We propose here a new explanation - not r…

astro-ph.EP2014★ 123 cited

An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk

Beth A. Biller, Jared Males, Timothy Rodigas +13

We report the detection of a faint pointlike feature possibly related to ongoing planet-formation in the disk of the transition disk star HD 169142. The pointlike feature has a …

astro-ph.EP2014★ 18 cited

Non-gravitational Perturbations and Virtual Impactors: the case of asteroid 2009 FD

F. Spoto, A. Milani, D. Farnocchia +5

Asteroid 2009 FD could impact Earth between 2185 and 2196. The long term propagation to the possible impacts and the intervening planetary encounters make 2009 FD one of the most c…

astro-ph.EP2014★ 73 cited

Revisiting the transits of CoRoT-7b at a lower activity level

S. C. C. Barros, J. M. Almenara, M. Deleuil +29

CoRoT-7b, the first super-Earth with measured radius discovered, has opened the new field of rocky exoplanets characterisation. To better understand this interesting system, new ob…

astro-ph.EP2014★ 16 cited

Similar origin for low- and high-albedo Jovian Trojans and Hilda asteroids ?

Michaël Marsset, Pierre Vernazza, Florian Gourgeot +4

Hilda asteroids and Jupiter Trojans are two low-albedo (p ~ 0.07) populations for which the Nice model predicts an origin in the primordial Kuiper Belt region. However, r…

astro-ph.EP2014★ 43 cited

Photometric and spectroscopic evidence for a dense ring system around Centaur Chariklo

R. Duffard, N. Pinilla-Alonso, J. L. Ortiz +7

In this work we aim to study if the variability in the absolute magnitude of Chariklo and the temporal variation of the spectral ice feature, even its disappearance in 2007, can be…

astro-ph.EP2014★ 62 cited

Physical and orbital properties of Beta Pictoris b

M. Bonnefoy, G. -D. Marleau, R. Galicher +13

The intermediate-mass star Beta Pictoris is known to be surrounded by a structured edge-on debris disk within which a gas giant planet was discovered orbiting at 8-10 AU. The physi…