Results 31 to 40 of about 17,015 (215)

Out There No One Has a Right to Die

Bioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

Mapping out the time-evolution of exoplanet processes [PDF]

, 2019
There are many competing theories and models describing the formation, migration and evolution of exoplanet systems. As both the precision with which we can characterize exoplanets and their host stars, and the number of systems for which we can make ...
Beichman, Charles, Christiansen, Jessie L., Ciardi, David R., Huber, Daniel, Marley, Mark S.   +4 more
core   +1 more source

Design Considerations for Visualization Transitions of 3D Spatial Data in Hybrid AR‐Desktop Environments

Computer Graphics Forum, EarlyView.
We present design considerations for animated transitions of the appearance of 3D spatial datasets in a hybrid Augmented Reality‐desktop context. Such hybrid interfaces combine both traditional and immersive displays to facilitate the exploration of 2D and 3D data representations in the environment in which they are best displayed.
Yucheng Lu, Tobias Rau, Benjamin Lee, Andreas Köhn, Michael Sedlmair, Christian Sandor, Tobias Isenberg   +6 more
wiley   +1 more source

Soot Planets Instead of Water Worlds

The Astrophysical Journal Letters
Some low-density exoplanets are thought to be water-rich worlds that formed beyond the snow line of their protoplanetary disk, possibly accreting coequal portions of rock and water.
Jie Li, Edwin A. Bergin, Marc M. Hirschmann, Geoffrey A. Blake, Fred J. Ciesla, Eliza M.-R. Kempton   +5 more
doaj   +1 more source

Elevated Eccentricities in the Radius Valley Hint at Water-rich Mini-Neptunes

The Astrophysical Journal
While recent planet-formation models broadly reproduce the observed population of super-Earths and mini-Neptunes, as well as the bimodal radius distribution (the “radius valley”), it remains unclear whether all these planets share a common rocky ...
Sho Shibata, Andre Izidoro
doaj   +1 more source

Searching for Earth analogues around the nearest stars: the disk age-metallicity relation and the age distribution in the Solar Neighbourhood

, 2007
The chemical composition of Earth's atmosphere has undergone substantial evolution over the course of its history. It is possible, even likely, that terrestrial planets in other planetary systems have undergone similar changes; consequently, the age ...
Edvardsson B., Edwin L. Turner, Fuhrmann K., Gilmore G., I. Neill Reid, Jeff A. Valenti, M. Mountain, Margaret C. Turnbull, Matteucci F., Rocha-Pinto H. J., Santos N. C., Schuster W. J., Wielen R., Zakhozhaj V. A.   +13 more
core   +1 more source

The eccentricity-mass distribution of exoplanets: signatures of different formation mechanisms? [PDF]

Astronomy & Astrophysics, 2007
We examine the distributions of eccentricity and host star metallicity of exoplanets as a function of their mass. Planets with M sin i >~ 4 M_J have an eccentricity distribution consistent with that of binary stars, while planets with M sin ...
Ribas, Ignasi, Miralda-Escude, Jordi
openaire   +2 more sources

Formation of Ultra-short-period Planets in Hot Jupiter Systems: Application to WASP-47

The Astrophysical Journal Letters
The WASP-47 system is notable as the first known system hosting both inner and outer low-mass planetary companions around a hot Jupiter, with an ultra-short-period (USP) planet as the innermost planetary companion.
Su Wang, Mengrui Pan, Yao Dong, Gang Zhao, Jianghui Ji   +4 more
doaj   +1 more source

Hot Jupiters Have Giant Companions: Evidence for Coplanar High-eccentricity Migration

The Astrophysical Journal Letters, 2023
This study considers the characteristics of planetary systems with giant planets based on a population-level analysis of the California Legacy Survey planet catalog. We identified three characteristics common to hot Jupiters (HJs).
Jon K. Zink, Andrew W. Howard
doaj   +1 more source

The Rossiter-McLaughlin effect in Exoplanet Research

, 2017
The Rossiter-McLaughlin effect occurs during a planet's transit. It provides the main means of measuring the sky-projected spin-orbit angle between a planet's orbital plane, and its host star's equatorial plane.
A Collier Cameron, A Collier Cameron, A Collier Cameron, A Giménez, A Giménez, A Hale, A Shporer, A Triaud, A. Brucalassi, A. H. M. J. Triaud, A. H. M. J. Triaud, A. Reiners, A. Santerne, A. Wyttenbach, AHMJ Triaud, AHMJ Triaud, AHMJ Triaud, AHMJ Triaud, AHMJ Triaud, AHMJ Triaud, AJ Barker, BC Addison, BS Gaudi, BS Gaudi, C Baruteau, C Brinch, C Hellier, C Huang, C Moutou, C Petrovich, C Petrovich, C Terquem, C Terquem, CA Watson, D Cébron, D Fabrycky, D Gandolfi, D Huber, D Lai, D Lai, D Malmberg, D Queloz, D Queloz, DB McLaughlin, DC Fabrycky, DJA Brown, DJA Brown, DJA Brown, DJA Brown, DNC Lin, DR Anderson, DR Anderson, DV Martin, E Gloria Di, EB Ford, EB Ford, EE Mamajek, EI Chiang, ELN Jensen, F Bouchy, F Dai, F Pont, F Rodler, F Schlesinger, F Yan, FA Rasio, G Boué, G Hébrard, G Hébrard, G Zhou, G Zhou, G Zhou, G. Hébrard, G. Hébrard, GM Kennedy, Gy. M. Szabó, H Rauer, H. M. Cegla, HM Cegla, IAG Snellen, IAG Snellen, IAG Snellen, IJM Crossfield, J Guillochon, J Sahlmann, J Sahlmann, J Schneider, J Southworth, J Wit de, JA Johnson, Jason W. Barnes, JB Bouquin Le, JC Becker, JF Donati, JF Donati, JN Winn, JN Winn, JN Winn, JN Winn, JN Winn, JN Winn, JP Zahn, JS Greaves, JW Barnes, K Batygin, K Masuda, KC Schlaufman, KI Öberg, Konstantin Batygin, KR Anderson, L Gizon, L Mancini, L. Y. Temple, LD Deming, LR Doyle, M Brogi, M Brogi, M Gillon, M Gillon, M Lendl, M López-Morales, M Mayor, M Nagasawa, M Neveu-VanMalle, M Oshagh, M Oshagh, M Perryman, M. Esposito, M. Esposito, MC Johnson, MC Johnson, MT Richards, MT Richards, N Madhusudhan, N Madhusudhan, N Narita, N Nikolov, O Benomar, P Bodenheimer, P Goldreich, P Molaro, PA Nutzman, PL Wood, PW Sullivan, Q Zhuang, R Alonso, R Cloutier, R Sanchis-Ojeda, R Sanchis-Ojeda, R Sanchis-Ojeda, RA Rossiter, RA Wittenmyer, RI Dawson, RM Petrie, RR Rafikov, S Albrecht, S Albrecht, S Albrecht, S Albrecht, S Albrecht, S Chatterjee, S Doolin, S Naoz, S Naoz, S Seager, Simon Albrecht, Subo Dong, T Hirano, T Hirano, T Louden, T Mazeh, T Močnik, TL Campante, TM Rogers, TR Marsh, V Bourrier, V Bourrier, V Eylen Van, VB Kostov, WJ Chaplin, WJ Chaplin, WR Ward, Y Hosokawa, Y Ohta, Y Wu, Y Wu, Z Kopal, Z Kopal, Zdeněk Kopal   +188 more
core   +1 more source