Results 51 to 60 of about 397,235 (349)

Searching for Binary Stars in Planetary Nebulae Using the ISIS Image Subtraction Software [PDF]

, 2011
We explored the theory that binary central stars of planetary nebulae may be contributing factor in the formation of planetary nebulae. We searched for this photometric variability in central stars of planetary nebulae because consistent periodic ...
Schwartz, Samantha
core   +2 more sources

No variations in transit times for Qatar-1 b

, 2015
The transiting hot Jupiter planet Qatar-1 b was presented to exhibit variations in transit times that could be of perturbative nature. A hot Jupiter with a planetary companion on a nearby orbit would constitute an unprecedented planetary configuration ...
Aceituno, F. J., Dimitrov, D., Errman, R., Fernández, M., Gilbert, H., Kitze, M., Maciejewski, G., Neuhäuser, R., Ohlert, J., Pannicke, A., Puchalski, D., Raetz, St., Schmidt, J. -G., Seeliger, M.   +13 more
core   +1 more source

Addressing Economic Insecurities Can Improve Patient‐Reported Outcomes in Lupus

Arthritis Care &Research, Accepted Article.
Background Economic insecurities, such as food, housing, transportation, and financial challenges, are modifiable risk factors and influence patient‐reported outcomes (PROs) in systemic lupus erythematosus (SLE). We examined: 1) associations between economic insecurities and PROs; 2) the impact of screening and addressing economic insecurities during ...
Jay Patel, Tripti Singh, Meredith Ingersoll, Shelby Gomez, Amanda Weber, Sarah E. Panzer, Sancia Ferguson, Christie M. Bartels, Shivani Garg   +8 more
wiley   +1 more source

Ringed versus Ringless Worlds: How Poynting–Robertson Drag Shapes Rings across the Solar System

The Astrophysical Journal Letters
Planetary rings are not only ubiquitous around the giant planets in the outer solar system, but have also been discovered around several small distant bodies. In contrast, no rings have been observed around any inner solar system objects.
Ryuki Hyodo, Shigeru Ida
doaj   +1 more source

Equilibria in the secular, non-coplanar two-planet problem

, 2009
We investigate the secular dynamics of a planetary system composed of the parent star and two massive planets in mutually inclined orbits. The dynamics are investigated in wide ranges of semi-major axes ratios (0.1-0.667), and planetary masses ratios (0 ...
Adams, Brouwer, Brumberg, Butler, Cezary Migaszewski, Fabrycky, Ferraz-Mello, Ferrer, Fischer, Fischer, Ford, Goździewski, Goździewski, Goździewski, Goździewski, Innanen, Ji, Khalil, Kinoshita, Kozai, Krasinsky, Krzysztof Goździewski, Laskar, Laskar, Lee, Libert, Libert, Libert, Lidov, Lidov, Markeev, Meyer, Michtchenko, Michtchenko, Michtchenko, Migaszewski, Migaszewski, Migaszewski, Miller, Morbidelli, Murray, Press, Rodríguez, Sokolskii, Thomas, Thommes, Veras, Veras, Wright   +48 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Planetary mass function and planetary systems [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
7 pages, MNRAS ...
openaire   +3 more sources

Planetary justice: Prioritizing the poor in earth system governance

Earth System Governance, 2020
We are in the middle of a planetary crisis that urgently requires stronger modes of earth system governance. At the same time, calls for justice are becoming increasingly pronounced in sustainability research: there can be no effective planetary ...
Prakash Kashwan, Frank Biermann, Aarti Gupta, Chukwumerije Okereke   +3 more
doaj   +1 more source

The scattering of small bodies in planetary systems: constraints on the possible orbits of cometary material

, 2011
The scattering of small bodies by planets is an important dynamical process in planetary systems. We present an analytical model to describe this process using the simplifying assumption that each particle's dynamics is dominated by a single planet at a ...
A. Bonsor, Alcock, Backman, Barnes, Beichman, Bonsor, Booth, Chambers, Churcher, de Elía, Debes, di Sisto, Duncan, Duncan, Emel’yanenko, Farihi, Farihi, Farihi, Gaidos, Gladman, Gladman, Greaves, Gulbis, Gänsicke, Holman, Horner, Horner, Jura, Jura, Kalas, Kilic, Klein, Koester, Kuchner, Levison, Levison, Lykawka, M. C. Wyatt, Marois, Marois, Melis, Moerchen, Moons, Morbidelli, Morbidelli, Morbidelli, Murray, Nesvorný, Nesvorný, Raymond, Reidemeister, Smith, Song, Tiscareno, Tisserand, Tremaine, Villaver, von Hippel, Wisdom, Wyatt, Wyatt, Wyatt, Zuckerman   +62 more
core   +1 more source

Long-term stability of the HR 8799 planetary system without resonant lock [PDF]

, 2016
HR 8799 is a star accompanied by four massive planets on wide orbits. The observed planetary configuration has been shown to be unstable on a timescale much shorter than the estimated age of the system (~ 30 Myr) unless the planets are locked into mean ...
Church, Ross P., Davies, Melvyn B., Gotberg, Ylva, Johansen, Anders, Mustill, Alexander   +4 more
core   +2 more sources