Results 11 to 20 of about 21,733,950 (248)
The formation of planetary systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 In an embedded cluster, with high stellar densities, interactions can occur between stars and either newly formed diffuse protostars or high-density regions produced by the collision of turbulent elements. It is shown by smoothed particle hydrodynamics (SPH) modelling that interactions can occur in which the complete protostar, or high-density region ...S. Oxley, M. M. Woolfsonopenaire +1 more sourcePlanetary formation in the Gamma-Cephei system [PDF]
Astronomy & Astrophysics, 2004 We numerically investigate under which conditions the planet detected at 2.1 AU of Gamma-Cephei could form through the core-accretion scenario despite the perturbing presence of the highly eccentric companion star. We first show that the initial stage of runaway accretion of kilometer-sized planetesimals is possible within 2.5 AU from the central star ...Thébault, Philippe, Marzari, Francesco, Scholl, Hans, Turrini, Diego, Barbieri, Mauro +4 moreopenaire +4 more sourcesLow-cost, multi-agent systems for planetary surface exploration [PDF]
, 2012 The use of off-the-shelf consumer electronics combined with top-down design methodologies have made small and inexpensive satellites, such as CubeSats, emerge as viable, low-cost and attractive space-based platforms that enable a range of new and ...Punzo, Giuliano, Macdonald, Malcolm, Dobie, Gordon, Jamieson, Jonathan, Bennet, Derek James +4 morecore +3 more sourcesApophis planetary defense campaign [PDF]
, 2022 We describe results of a planetary defense exercise conducted during the close approach to Earth by the near-Earth asteroid (99942) Apophis during 2020 December–2021 March. The planetary defense community has been conducting observational campaigns since Mastaler, Ron A., Kim, Dong-Heun, Lees, Robert C., Brozovic, Marina, Weryk, Robert, Bauer, James, Polishook, David, Petrescu, Elisabeta, Farnocchia, Davide, Heinze, Aren N., Wainscoat, Richard, Warner, Elizabeth, Satpathy, Akash, Dotson, Jessie, Balam, David, McMillan, Robert S., Roh, Dong-Goo, Dróżdż, Marek, Ogłoza, Waldemar, Janse van Rensburg, Petro, Mathias, Donovan L., Bell, David, Elenin, Leonid, Buzzi, Luca, Tonry, John L., Glamazda, Dmitry, Moon, Hong-Kyu, Masiero, Joseph, Bressi, Terry H., Choi, Young-Jun, Weiland, Henry J., Erece, Orhan, Tubbiolo, Andrew F., Erasmus, Nicolas, Reva, Inna, Kelley, Michael S., Denneau, Larry, Medeiros, Hissa, Jacques, Cristovao, Schmalz, Sergei, Morate, David, Naidu, Shantanu P., Read, Mike T., Nastasi, Alessandro, Zhornichenko, Anastasiya, Pál, András, Cano, Juan, Reichart, Daniel E., Perminov, Alexander, Barnardi, Fabrizio, Wheeler, Lorien F., Chingis, Omarov, Serebryanskiy, Aleksander, Licandro, Javier, Marsset, Michael, Mainzer, Amy, Larsen, Jeffrey A., Holman, Matthew J., Pérez-Toledo, Fabricio, Michel, Patrick, Rumpf, Clemens, Wiebe, Yulia, Kiss, Csaba, Scotti, James V., Bamberger, Daniel, Lee, Hee-Jae, Marciniak, Anna, Cennamo, Ramona, Serra-Ricart, Miquel, Kim, Myung-Jin, Reddy, Vishnu, Kokina, Tatiana, Szakáts, Robert, Żejmo, Michał, Cantillo, David, Kamiński, Krzysztof, Mokhnatkin, Artem, Kamińska, Monika K., Wells, Guy, Alarcon, Miguel R., Ivanov, Alexander, Chastel, Serge, Veres, Peter, Graziani, Filippo, Sonbas, Eda, Taylor, Patrick A., Kaplan, Murat, de León, Julia, Benner, Lance A. M., Novichonok, Artem, Popescu, Marcel, Zoła, Stanisław, Micheli, Marco, Falco, Carmelo, Christensen, Eric, Kaiser, Galina, Kuznetsov, Eduard, Brucker, Melissa J., Yim, Hong-Suh, Faggioli, Laura, Alarcon, M.R., Scotti, J. V., Kelley, M. S., Taylor, P. A., Licandro, J., Kiss, C., Bressi, T. H., Falco, C., Nastasi, A., Ivanov, A., Kuznetsov, E., Farnocchia, D., Yim, H. -S., Pérez-Toledo, F., Rumpf, C., Christensen, E., Wheeler, L.F., Kamińska, M. K., Schmalz, S., Graziani, F., Holman, M.J., Naidu, S.P., Mastaler, R.A., Kaiser, G., Tonry, J.L., Mainzer, A., Dróżdż, M., van Rensburg, P.J., Micheli, M., Perminov, A., Novichonok, A., Zhornichenko, A., Glamazda, D., Wheeler, L. F., Elenin, L., Weiland, H. J., Kim, M.-J., Polishook, D., McMillan, R.S., Serebryanskiy, A., Roh, D.-G., Mathias, D. L., Kaplan, M., Lees, R.C., Ogłoza, W., Kim, M. -J., Larsen, J.A., Cennamo, R., Choi, Y. -J., Kokina, T., Heinze, A. N., Petrescu, E., Benner, L.A.M., Dotson, J., Kim, D.-H., Faggioli, L., de León, J., Larsen, J. A., Weiland, H.J., Bauer, J., Erece, O., Wells, G., Medeiros, H., Weryk, R., Lee, H. -J., Bamberger, D., Yim, H.-S., Reva, I., Sonbas, E., Pál, A., Heinze, A.N., Moon, H.-K., Kim, D. -H., Roh, D. -G., Cantillo, D., Brucker, M.J., Alarcon, M. R., Satpathy, A., Popescu, M., Lees, R. C., Mastaler, R. A., Mathias, D.L., Erasmus, N., Moon, H. -K., Taylor, P.A., Reichart, D.E., Mokhnatkin, A., Morate, D., Żejmo, M., Veres, P., Chingis, O., Naidu, S. P., Scotti, J.V., Read, M. T., Szakáts, R., Tubbiolo, A.F., Barnardi, F., Balam, D., Read, M.T., Chastel, S., Kamińska, M.K., Warner, E., Reichart, D. E., Brozovic, M., Tubbiolo, A. F., Wainscoat, R., Benner, L. A. M., Holman, M. J., Denneau, L., Bell, D., Marsset, M., McMillan, R. S., Jacques, C., Reddy, V., Zoła, S., Cano, J., Wiebe, Y., Tonry, J. L., Lee, H.-J., Bressi, T.H., van, Rensburg, P. J., Kelley, M.S., Choi, Y.-J., Serra-Ricart, M., Kamiński, K., Masiero, J., Brucker, M. J., Marciniak, A., Buzzi, L., Michel, P., David Polishook, Robert Weryk, Artem Novichonok, David Cantillo, Matthew J. Holman, Daniel E. Reichart, Elisabeta Petrescu, Vishnu Reddy, Alessandro Nastasi, Leonid Elenin, Young-Jun Choi, Amy Mainzer, Murat Kaplan, Marco Micheli, Michael S. Kelley, Elizabeth Warner, Krzysztof Kamiński, Dong-Goo Roh, Robert Szakáts, Hee-Jae Lee, Alexander Perminov, Robert S. McMillan, Eda Sonbas, Artem Mokhnatkin, Marek Dróżdż, Lorien F. Wheeler, Petro Janse van Rensburg, Clemens Rumpf, Shantanu P. Naidu, Sergei Schmalz, Hong-Suh Yim, Dong-Heun Kim, Monika K. Kamińska, Hissa Medeiros, Stanisław Zoła, Terry H. Bressi, Carmelo Falco, Aren N. Heinze, Donovan L. Mathias, Robert C. Lees, Patrick Michel, Alexander Ivanov, Myung-Jin Kim, Michał Żejmo, Jeffrey A. Larsen, Ramona Cennamo, Javier Licandro, Yulia Wiebe, James V. Scotti, Dmitry Glamazda, David Morate, Henry J. Weiland, Luca Buzzi, Joseph Masiero, Miguel R. Alarcon, Inna Reva, András Pál, Fabrizio Barnardi, Jessie Dotson, Hong-Kyu Moon, Daniel Bamberger, Serge Chastel, Andrew F. Tubbiolo, Cristovao Jacques, Omarov Chingis, John L. Tonry, Lance A. M. Benner, Filippo Graziani, Guy Wells, Orhan Erece, Anastasiya Zhornichenko, David Bell, Julia de León, Peter Veres, Tatiana Kokina, Csaba Kiss, Eduard Kuznetsov, Michael Marsset, Juan Cano, Galina Kaiser, Davide Farnocchia, Melissa J. Brucker, Nicolas Erasmus, Waldemar Ogłoza, Akash Satpathy, Fabricio Pérez-Toledo, Mike T. Read, Laura Faggioli, Patrick A. Taylor, Anna Marciniak, Marina Brozovic, Eric Christensen, Aleksander Serebryanskiy, David Balam, Marcel Popescu, Miquel Serra-Ricart, James Bauer, Richard Wainscoat, Ron A. Mastaler, Larry Denneau +329 morecore +1 more sourceSummary of the Third International Planetary Dunes Workshop: Remote
Sensing and Image Analysis of Planetary Dunes, Flagstaff, Arizona, USA,
June 12-15, 2012 [PDF]
, 2013 The Third International Planetary Dunes Workshop took place in Flagstaff, AZ, USA during June 12-15, 2012. This meeting brought together a diverse group of researchers to discuss recent advances in terrestrial
and planetary research on aeolian bedforms. Yizhaq, Hezi, Chojnacki, Matthew, Bishop, Mark Ashley, Bishop, Marc A., Tirsch, Daniela, Neakrase, Lynn D. V., Bourke, Mary C., Newman, Claire E., Rubin, Dave M., Zimbelman, James R., Dinwiddie, Cynthia L., Horgan, Briony H., Neakrase, Lynn D.V., Hayward, Rosalyn K., Michaels, Timothy I., Bishop, Mark A., Zimbleman, James R., Horgan, Briony H. N., Burr, Devon M., Titus, Timothy N., Fenton, Lori K., Fenton, Lori, Kerber, Laura, Le Gall, Alice, Rubin, David M. +24 morecore +1 more sourceOn the formation age of the first planetary system [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractRecently, it has been observed the extreme metal-poor stars in the Galactic halo, which must be formed just after Pop III objects. On the other hand, the first gas clouds of mass ∼ 106 M⊙ are supposed to be formed at z ∼ 10, 20, and 30 for the 1σ, 2σ and 3σ, where the density perturbations are assumed of the standard ΛCDM cosmology.Hara, Tetsuya, Kunitomo, Shuhei, Shigeyasu, Masanobu, Kajiura, Daigo +3 moreopenaire +2 more sourcesMisalignment diagnosis of a planetary gearbox based on vibration analysis [PDF]
, 2014 As a critical power transmission system, planetary gearbox is widely used in many industrial important machines such as wind turbines, aircraft turbine engines, helicopters.Gu, Fengshou, Ball, Andrew, Zhen, Dong, Abdalla, Gaballa, Tian, Xiange +4 morecore +2 more sourcesThe McDonald Accelerating Stars Survey: Architecture of the Ancient Five-planet Host System Kepler-444
The Astronomical Journal, 2023 We present the latest and most precise characterization of the architecture for the ancient (≈11 Gyr) Kepler-444 system, which is composed of a K0 primary star (Kepler-444 A) hosting five transiting planets and a tight M-type spectroscopic binary (Kepler-Zhoujian Zhang, Brendan P. Bowler, Trent J. Dupuy, Timothy D. Brandt, G. Mirek Brandt, William D. Cochran, Michael Endl, Phillip J. MacQueen, Kaitlin M. Kratter, Howard T. Isaacson, Kyle Franson, Adam L. Kraus, Caroline V. Morley, Yifan Zhou +13 moredoaj +1 more sourcePlanetary population synthesis and the emergence of four classes of planetary system architectures [PDF]
, 2023 Planetary population synthesis is a helpful tool to understand the physics of planetary system formation. It builds on a global model, meaning that the model has to include a multitude of physical processes. The outcome can be statistically compared with Burn, Remo, Mordasini, C., Emsenhuber, A., Mordasini, Christoph, Emsenhuber, Alexandre, Burn, R. +5 morecore +1 more source
