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Tidal interactions in multi-planet systems
Planet formation Planetary systems Resonances Tidal interactions
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2011/10/13
We study systems of close orbiting planets evolving under the influence of tidal circularization. It is supposed that a commensurability forms through the action of disk induced migration and orbital ...
Imaging power of multi-fibered nulling telescopes for extra-solar planet characterization
Fourier optics Nulling telescope Achromatic phase shifter Single-mode waveguide
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2011/8/18
Abstract: In this paper are discussed the nulling and imaging properties of monolithic pupil telescopes equipped with a focal plane waveguide array, which could be envisaged as precursor space mission...
Radio Interferometric Planet Search II: Constraints on sub-Jupiter-Mass Companions to GJ 896A
Interferometric Planet Constraints sub-Jupit
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2011/10/10
We present results from the Radio Interferometric Planet (RIPL) search for compan- ions to the nearby star GJ 896A. We present 11 observations over 4.9 years. Fitting astrometric parameters to the dat...
Detailed Abundances of the Solar Twins 16 Cygni A and B: Constraining Planet Formation Models
Detailed Abundances Solar Twins Constraining Planet Formation Models
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2011/10/10
Results of a detailed abundance analysis of the solar twins 16 Cyg A and 16 Cyg B based on high-resolution, high signal-to-noise ratio echelle spectroscopy are presented. 16 Cyg B is known to host a g...
The First Kepler Mission Planet Confirmed With The Hobby-Eberly Telescope: Kepler-15b, a Hot Jupiter Enriched In Heavy Elements
Hot Jupiter Enriched Heavy Elements Planet Confirmed
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2011/10/9
We report the discovery of Kepler-15b, a new transiting exoplanet detected by NASA's Kepler mission. The transit signal with a period of 4.94 days was detected in the quarter 1 (Q1) Kepler photometry....
The 55 Cancri System: Fundamental Stellar Parameters, Habitable Zone Planet, and Super-Earth Diameter
Cancri System: Fundamental Stellar Parameters Super-Earth Diameter
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2011/9/30
The bright star 55 Cancri is known to host five planets, including a transiting super-Earth. We use the CHARA Array to directly determine the following of 55 Cnc's stellar astrophysical parameters: $R...
A giant planet in the triple system HD132563
individual: HD 132563 - Planetary systems - (Stars:) binaries: visual - (Stars:) binaries: spectroscopic - Techniques: spectroscopic
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2011/9/28
As part of our radial velocity planet-search survey performed with SARG at TNG, we monitored the components of HD 132563 for ten years. It is a binary system formed by two rather similar solar type st...
Giant Planet Formation by Disk Instability in Low Mass Disks?
Giant Planet Formation Disk Instability Low Mass Disks
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2011/1/11
Forming giant planets by disk instability requires a gaseous disk that is massive enough to become gravitationally unstable and able to cool fast enough for self-gravitating clumps to form and survive...
The role of the initial surface density profiles of the disc on giant planet formation: comparing with observations
the initial surface density profiles the disc on giant planet formation
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2011/1/10
In order to explain the main characteristics of the observed population of extrasolar planets and the giant planets in the Solar System, we need to get a clear understanding of which are the initial c...
A search for Star-Planet-Interactions in the upsilon Andromedae system at X-ray and optical wavelengths
Star-Planet-Interactions the upsilon Andromedae system
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2011/1/11
Close-in, giant planets are expected to influence their host stars via tidal or magnetic interaction. But are these effects strong enough in suitable targets known so far to be observed with today's i...
HD 46375: seismic and spectropolarimetric analysis of a young Sun hosting a Saturn-like planet
seismic spectropolarimetric analysis Saturn-like planet
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2010/11/15
Context. HD 46375 is known to host a Saturn-like exoplanet orbiting at 0.04 AU from its host star. Stellar light reflected by the planet was tentatively identified in the 34-day CoRoT run acquired in ...
The NASA-UC Eta-Earth Program: III. A Super-Earth orbiting HD 97658 and a Neptune-mass planet orbiting Gl 785
planetary systems stars individual techniques radial velocity
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2010/11/9
We report the discovery of planets orbiting two bright, nearby early K dwarf stars, HD97658 and
Gl 785. These planets were detected by Keplerian modelling of radial velocities measured with Keck-HIRE...
Runaway Growth During Planet Formation: Explaining the Size Distribution of Large Kuiper Belt Objects
circumstellar matter Kuiper belt planetary systems general planets and satellites
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2010/11/9
Runway growth is an important stage in planet formation during which large protoplanets form,
while most of the initial mass remains in small planetesimals. The amount of mass converted into large pr...
The radius anomaly in the planet/brown dwarf overlapping mass regime
radius anomaly mass regime
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2010/11/9
The recent detection of the transit of very massive substellar companions (Deleuil et al. 2008; Bouchy et al. 2010;Anderson et al. 2010; Bakos et al. 2010) provides a strong con-
straint to planet an...
Possible detection of phase changes from the non-transiting planet HD 46375b by CoRoT
Stars:planetary systems Techniques: photometric Methods: data analysis Stars: individual HD 46375
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2010/11/15
Context. The present work deals with the detection of phase changes in an exoplanetary system. HD 46375 is a solar analog known to host a non-transiting Saturn-mass exoplanet with a 3.0236 day period....