Results 51 to 60 of about 393,869 (297)

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

The Dynamics of Stellar Coronae Harboring Hot-jupiters II. A Space Weather Event on A Hot-jupiter

, 2011
We carry out a numerical simulation depicting the effects of a Coronal Mass Ejection (CME) event on a close-in giant planet in an extrasolar system. We drive the CME in a similar manner as in simulations of space weather events on Earth.
Cohen, Cohen, Cohen, Cohen, Cohen, Cohen, Cuntz, Gombosi, Güdel, I. V. Sokolov, Ip, J. J. Drake, Jacobs, Kashyap, Kivelson, Lammer, Liu, Lugaz, Manchester, Mayor, Murray-Clay, O. Cohen, Pillitteri, Pulkkinen, Roussev, Saar, Schneider, Schneider, Schneiter, Schwenn, Shkolnik, Shkolnik, Shkolnik, Shkolnik, Sánchez-Lavega, T. I. Gombosi, Telleschi, Titov, V. L. Kashyap   +38 more
core   +1 more source

Refined Properties of the HD 130322 Planetary System [PDF]

, 2015
Exoplanetary systems closest to the Sun, with the brightest host stars, provide the most favorable opportunities for characterization studies of the host star and their planet(s).
Boyajian, Tabetha, Feng, Y. Katherina, Fischer, Debra A., Henry, Gregory W., Hinkel, Natalie R., Howard, Andrew W., Kane, Stephen R., Wright, Jason   +7 more
core   +3 more sources

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 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

The complex planetary synchronization structure of the solar system

, 2014
The complex planetary synchronization structure of the solar system, which since Pythagoras of Samos (ca. 570-495 BC) is known as the music of the spheres, is briefly reviewed from the Renaissance up to contemporary research.
Scafetta, Nicola
core   +1 more source

The GAPS programme with HARPS-N@TNG IV: A planetary system around XO-2S [PDF]

, 2014
We performed an intensive radial velocity monitoring of XO-2S, the wide companion of the transiting planet-host XO-2N, using HARPS-N at TNG in the framework of the GAPS programme.
Affer, L., Andreuzzi, G., Barbieri, M., Bedin, L. R., Benatti, S., Biazzo, K., Bignamini, A., Bonavita, M., Bonomo, A. S., Borsa, F., Calcidese, P., Christille, J. M., Claudi, R. U., Cosentino, R., Covino, E., Damasso, M., Desidera, S., Esposito, M., Fiorenzano, A. F. Martinez, Gandolfi, D., Giacobbe, P., Gratton, R., Harutyunyan, A., Lanza, A. F., Latham, D., Lattanzi, M., Leto, G., Lodato, G., Lovis, C., Maggio, A., Malavolta, L., Mancini, L., Marzari, F., Micela, G., Molinari, E., Mordasini, C., Munari, U., Nascimbeni, V., Pagano, I., Pedani, M., Pepe, F., Piotto, G., Poretti, E., Rainer, M., Ribas, I., Sanchez, R. Zanmar, Santos, N. C., Scandariato, G., Silvotti, R., Southworth, J., Sozzetti, A.   +50 more
core   +2 more sources

Microstructure Design of Steel‐Spinel Composites via Spark Plasma Sintering Process

Advanced Engineering Materials, EarlyView.
This study illustrates how spark plasma sintering at reduced oxygen partial pressure enables controlled formation of steel‐spinel composites through tailored redox reactions and cation exchange. Comparison of the MgO–Fe2O3, steel–(MgO+Cr2O3), and steel–(MgO+Fe2O3) systems shows how oxygen activity and interface chemistry govern spinel formation, phase ...
Mahnaz Mehdizadehlima, Christian Schimpf, Stefan Martin, Olga Fabrichnaya, David Rafaja   +4 more
wiley   +1 more source

Backlash Analysis of Gear Transmission of Parallel Uniform Planetary Gear

Jixie chuandong, 2018
Based on the NGW planetary gear transmission system,a gear transmission of parallel uniform planetary gear is proposed to reduce the transmission error of asteroid transmission system and improve its transmission accuracy.
Guo Jing, Zhu Zengbao, Liu Chun, Zhang Biao   +3 more
doaj  

Production of MgO/TiC Composites From MgO‐C Recyclates Using Spark Plasma Sintering

Advanced Engineering Materials, EarlyView.
Using the spark plasma sintering technique, MgO/TiC composites are manufactured from recycled MgO‐C refractories stemming from the steel production that were mixed with titanium powder. This article shows, how the size of the Ti grains and their distribution in the powder mixture affect the local carbon concentration in TiC.
Jiayan Yu, Christian Schimpf, Stefan Martin, David Rafaja   +3 more
wiley   +1 more source