Results 141 to 150 of about 4,034,717 (373)

Theory of planet formation and comparison with observation

open access: yesEPJ Web of Conferences, 2011
The planetary mass-radius diagram is an observational result of central importance to understand planet formation. We present an updated version of our planet formation model based on the core accretion paradigm which allows us to calculate planetary ...
Klahr H.   +3 more
doaj   +1 more source

The Young L Dwarf 2MASS J11193254−1137466 Is a Planetary-mass Binary [PDF]

open access: yes, 2017
We have discovered that the extremely red, low-gravity L7 dwarf 2MASS J11193254−1137466 is a 0.″14 (3.6 au) binary using Keck laser guide star adaptive optics imaging.
W. Best   +3 more
semanticscholar   +1 more source

How planetary growth outperforms migration

open access: yes, 2019
Planetary migration is a major challenge for planet formation theories. The speed of Type I migration is proportional to the mass of a protoplanet, while the final decade of growth of a pebble-accreting planetary core takes place at a rate that scales ...
Brasser, Ramon   +2 more
core   +1 more source

Ancestral Protein‐Based Lighting

open access: yesAdvanced Materials, EarlyView.
The ancestral sequence reconstruction (ASR) method applied to a large dataset of modern fluorescent proteins (FPs) led to a bright ancestral‐like FP suitable for photon down‐conversion in bio‐hybrid light‐emitting diodes (Bio‐HLEDs). Abstract Protein‐optoelectronics is a paradigm toward eco‐designed and sustainable technologies.
Stephanie Willeit   +7 more
wiley   +1 more source

ANALYSIS OF SELF – GRAVITATING PLANETARY SATELLITES IN THE SOLAR SYSTEM

open access: yesOdessa Astronomical Publications, 2016
As of today there have been more than 180 planetary satellites discovered in the Solar system, and the number of outer moons found continues to grow. Most of those natural satellites have insufficient mass and are able to retain their shape only due to ...
S. O. Yasenev
doaj   +1 more source

BANYAN. IX. The Initial Mass Function and Planetary-mass Object Space Density of the TW HYA Association [PDF]

open access: yes, 2016
A determination of the initial mass function (IMF) of the current, incomplete census of the 10 Myr-old TW Hya association (TWA) is presented. This census is built from a literature compilation supplemented with new spectra and 17 new radial velocities ...
J. Gagn'e   +17 more
semanticscholar   +1 more source

Liquid Metal‐Vitrimer Conductive Composite for Recyclable and Resilient Electronics

open access: yesAdvanced Materials, EarlyView.
To address the growing electronic waste challenge, an electrically conductive, healable, and recyclable plastic composite is created, composed of vitrimer and liquid metal microdroplets. A reconfigurable circuit board is demonstrated using this composite material, providing a notable step toward sustainable and robust electronic technologies.
Dong Hae Ho   +4 more
wiley   +1 more source

Toward Stable, High‐Energy, Partially Disordered Mn‐Rich Spinel Cathodes by Revealing and Mitigating Surface Degradation

open access: yesAdvanced Materials, EarlyView.
Mechano‐activated partially disordered spinel LiMn2O4 is demonstrated with high Mn utilization and a specific energy over 800 Wh kg−1 at the cathode active material (CAM) level. Surface degradation, caused by the Jahn‐Teller effect in baseline commercial carbonate electrolyte (Gen 2), intensifies Mn2+ dissolution and crosstalk at high potentials ...
Dawei Xia   +15 more
wiley   +1 more source

Miras, mass loss, and the origin of planetary nebulae [PDF]

open access: yesInternational Astronomical Union Colloquium, 1981
Mira variables are found at the tip of the asymptotic giant branch, with L≈3000-5000Lʘ and TeH3000K. (Feast 1981; Willson 1981a). They are fundamental mode pulsators (Willson 1979, 1981a). A typical Mira has P~350 days, R~200-300Rʘ, M~1-2Mʘ (Willson 1979; 1981a).
openaire   +2 more sources

Korean-Japanese Planet Search Program: Substellar Companions around Intermediate-Mass Giants

open access: yes, 2011
A Korean-Japanese planet search program has been carried out using the 1.8m telescope at Bohyunsan Optical Astronomy Observatory (BOAO) in Korea, and the 1.88m telescope at Okayama Astrophysical Observatory (OAO) in Japan to search for planets around ...
Han, Inwoo   +12 more
core   +1 more source

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