Earth beyond six of nine planetary boundaries
Science Advances, 2023 This planetary boundaries framework update finds that six of the nine boundaries are transgressed, suggesting that Earth is now well outside of the safe operating space for humanity.
Katherine Richardson +28 more
semanticscholar +1 more source
PARAMETER OPTIMIZATION FOR A THERMAL SIMULATION OF AN URBAN AREA [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Urban heat island (UHI) phenomenon is a significant challenge in urban planning, and accurate temperature predictions are crucial for effective decision-making. The choice of material parameters is crucial to simulate a realistic temperature distribution
B. Kottler +5 more
doaj +1 more source
Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System [PDF]
Astrophysical Journal, 2018 The TRAPPIST-1 planetary system provides an unprecedented opportunity to study terrestrial exoplanet evolution with the James Webb Space Telescope (JWST) and ground-based observatories.
A. Lincowski +6 more
semanticscholar +1 more source
Transit timing variations in the WASP-4 planetary system [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted
J. Southworth +33 more
semanticscholar +1 more source
Dynamical instability and its implications for planetary system architecture [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We examine the effects that dynamical instability has on shaping the orbital properties of exoplanetary systems. Using N-body simulations of non-EMS (Equal Mutual Separation), multi-planet systems we find that the lower limit of the instability timescale
Dong-Hong Wu +3 more
semanticscholar +1 more source
A Review of Possible Planetary Atmospheres in the TRAPPIST-1 System [PDF]
Space Science Reviews, 2020 TRAPPIST-1 is a fantastic nearby (∼39.14 light years) planetary system made of at least seven transiting terrestrial-size, terrestrial-mass planets all receiving a moderate amount of irradiation.
M. Turbet +6 more
semanticscholar +1 more source
On Populism, Planets, and Why Concepts Should Precede Definitions and Theory-Seeking
Sociologica, 2019 Despite its remarkable growth in recent years, the study of populism has long suffered from the lack of a comprehensive theory about its causes, development, and outcomes.
Takis S. Pappas
doaj +1 more source
Stellar Spin–Orbit Alignment for Kepler-9, a Multi-transiting Planetary System with Two Outer Planets Near 2:1 Resonance [PDF]
, 2017 We present spectroscopic measurements of the Rossiter–McLaughlin effect for the planet b of the Kepler-9 multi-transiting planetary system. The resulting sky-projected spin–orbit angle is λ = −13° ± 16°, which favors an aligned system and strongly ...
Songhu Wang +6 more
semanticscholar +1 more source
Precise masses for the transiting planetary system HD 106315 with HARPS [PDF]
, 2017 The multi-planetary system HD 106315 was recently found in K2 data . The planets have periods of $P_b \sim9.55$ and $P_c \sim 21.06\,$days, and radii of $ r_b = 2.44 \pm 0.17\, $ and $r_c = 4.35 \pm 0.23\, $ $R_{\oplus}$. The brightness of the host star (
S. Barros +47 more
semanticscholar +1 more source
A new paradigm of governance for a carbon-pricing system [PDF]
, 2016 Throughout its life, the United Nations has played a pioneering role in the world of ideas. COP21 – also known as Paris 2015 – shows the path for the United Nations to establish a new governance that will enforce the compliance of a new planetary carbon ...
Berezin, A. +2 more
core +1 more source