Results 1 to 10 of about 14,727 (142)

Herschel evidence for disk flattening or gas depletion in transitional disks [PDF]

EAS Publications Series, 2014
Transitional disks are protoplanetary disks characterized by reduced near- and mid-infrared emission with respect to full disks. This characteristic spectral energy distribution indicates the presence of an optically thin inner cavity within the dust ...
Andrews, S., Dent, W. R. F., Espaillat, C., Kamp, I., Keane, J. T., Meeus, G., Pascucci, I., Thi, W. -F., Woitke, P.   +8 more
core   +22 more sources

Chemistry in Protoplanetary Disks [PDF]

Chemical Reviews, 2013
This comprehensive review summarizes our current understanding of the evolution of gas, solids and molecular ices in protoplanetary disks. Key findings related to disk physics and chemistry, both observationally and theoretically, are highlighted.
Henning, Thomas, Semenov, Dmitry
core   +5 more sources

Photoprocesses in protoplanetary disks [PDF]

Faraday Discussions, 2006
Circumstellar disks are exposed to intense ultraviolet radiation from the young star. In the inner disks, the UV radiation can be enhanced by more than seven orders of magnitude compared with the average interstellar field, resulting in a physical and ...
Aikawa, Augereau, Bastiaan Jonkheid, Bergin, Brittain, Buenker, Calvet, Chiang, Clampin, Connors, D?Alessio, Dent, Draine, Dunning, Dutrey, Ewine F. van Dishoeck, Feigelson, Geers et al., Gorti, Greaves, Gredel, Guest, Habing, Hauschildt, Herbig, Hollenbach, Honjou, Huebner, Jonkheid, Jonkheid, Kamp, Kamp, Kamp, Kessler-Silacci, Kirby, Kirby, Koch, Koch, Lavendy, Lee, Lee, Lee, Lee, Lee, Lepp, Li, Lyons, Marc C. van Hemert, Markwick, Min, Muzerolle, Nee, Nee, Ogawa, Okabe, Pouilly, R?melt, Roberge, Roberge, Shen, Shih, Spaans, St?uber, St?uber, Suto, Suto, Suto, Suto, Sylvester, Theodorakopoulos, Thi, van Boekel, van Dishoeck, van Dishoeck, van Dishoeck, van Dishoeck, van Dishoeck, van Zadelhoff, Watanabe, Weidenschilling, Willacy, Yoshino   +81 more
core   +4 more sources

Volatiles in protoplanetary disks [PDF]

, 2014
Volatiles are compounds with low sublimation temperatures, and they make up most of the condensible mass in typical planet-forming environments. They consist of relatively small, often hydrogenated, molecules based on the abundant elements carbon ...
Bergin, Edwin A., Brittain, Sean, Marty, Bernard, Mousis, Olvier, Oberg, Karin L., Pontoppidan, Klaus M., Salyk, Colette   +6 more
core   +7 more sources

Silica in Protoplanetary Disks [PDF]

The Astrophysical Journal, 2008
Mid-infrared spectra of a few T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope show prominent narrow emission features indicating silica (crystalline silicon dioxide).
A. Li, A. R. Basu, Alexander, Armus, B. A. Sargent, Barkume, Barsony, Benzerara, Binns, Bohren, Bouvier, Bowen, Bowen, Brearley, C. J. Bohac, C. Tayrien, Calvet, Calvet, Chen, Chiar, Cohen, D'Alessio, D'Alessio, D. M. Watson, de Pater, de Zeeuw, Dodd, Dorschner, E. Furlan, Edgar, Emery, Fabian, Furlan, G. C. Sloan, Grün, Hanner, Harker, Harker, Heaney, Hemley, Henning, Herbig, Honda, Houck, J. D. Green, Jaeger, K. H. Kim, Kamp, Kastner, Kemper, Kimura, Klein, Koike, Li, Li, Luhman, Luhman, M. K. McClure, Marshall, Metchev, Mikouchi, Mutschke, Norton, P. Manoj, Palik, Pascucci, Pilipp, Plyusnina, Posch, Prato, Preibisch, Reipurth, Rietmeijer, Rietmeijer, Rietmeijer, Sargent, Schaefer, Silverstone, Tuttle, Uchida, W. J. Forrest, Werner, Wilking   +82 more
core   +3 more sources

Dynamics of Protoplanetary Disks [PDF]

Annual Review of Astronomy and Astrophysics, 2011
Protoplanetary disks are quasi-steady structures whose evolution and dispersal determine the environment for planet formation. I review the theory of protoplanetary disk evolution and its connection to observations.
Lubow SH, Philip J. Armitage, Spitzer L.
core   +4 more sources

Protoplanetary Disks and Their Evolution [PDF]

Annual Review of Astronomy and Astrophysics, 2011
Flattened, rotating disks of cool dust and gas extending for tens to hundreds of AU are found around almost all low mass stars shortly after their birth.
Cieza, Lucas A., Williams, Jonathan P.
core   +3 more sources

Dust Evolution in Protoplanetary Disks [PDF]

, 2014
(abridged) In the core accretion scenario for the formation of planetary rocky cores, the first step toward planet formation is the growth of dust grains into larger and larger aggregates and eventually planetesimals.
Andrews, Sean, Birnstiel, Tilman, Blum, Juergen, Carpenter, John, Dominik, Carsten, Isella, Andrea, Natta, Antonella, Ricci, Luca, Testi, Leonardo, Williams, Jonathan, Wilner, David   +10 more
core   +5 more sources

Vortex migration in protoplanetary disks [PDF]

The Astrophysical Journal, 2010
We consider the radial migration of vortices in two-dimensional isothermal gaseous disks. We find that a vortex core, orbiting at the local gas velocity, induces velocity perturbations that propagate away from the vortex as density waves.
Abramowitz, Barge, Barranco, Bryden, Geoffroy Lesur, Godon, Goodman, John C. B. Papaloizou, Johnson, Johnson, Klahr, Koller, Lovelace, Papaloizou, Petersen, Petersen, Sijme-Jan Paardekooper, Tanaka, Ward, Weidenschilling   +19 more
core   +10 more sources

Vortices in Protoplanetary Disks [PDF]

The Astrophysical Journal, 1999
We use a high order accuracy spectral code to carry out two-dimensional time-dependent numerical simulations of vortices in accretion disks. In particular, we examine the stability and the life time of vortices in circumstellar disks around young stellar objects. The results show that cyclonic vortices dissipate quickly, while anticyclonic vortices can
Godon, Patrick., Livio, Mario.
openaire   +3 more sources