Results 21 to 30 of about 467 (180)

Anatomy of rocky planets formed by rapid pebble accretion III. Partitioning of volatiles between planetary core, mantle, and atmosphere [PDF]

, 2023
Volatile molecules containing hydrogen, carbon, and nitrogen are key components of planetary atmospheres. In the pebble accretion model for rocky planet formation, these volatile species are accreted during the main planetary formation phase.
Martin Bizzarro, Schiller, Martin, Zhengbin Deng, Martin Schiller, Anders Johansen, Johansen, Anders, Deng, Zhengbin, Johansen, Anders,, Ronnet, Thomas, Bizzarro, Martin, Schiller, Martin,, Bizzarro, Martin,, Thomas Ronnet, Lund University., Deng, Zhengbin,   +14 more
core   +2 more sources

The Origin of Earth's Mantle Nitrogen: Primordial or Early Biogeochemical Cycling?

Geochemistry, Geophysics, Geosystems, Volume 23, Issue 5, May 2022., 2022
Abstract Earth's mantle nitrogen (N) content is comparable to that found in its N‐rich atmosphere. Mantle N has been proposed to be primordial or sourced by later subduction, yet its origin has not been elucidated. Here we model N partitioning during the magma ocean stage following planet formation and the subsequent cycling between the surface and ...
H. Kurokawa, M. Laneuville, Y. Li, N. Zhang, Y. Fujii, H. Sakuraba, C. Houser, H. J. Cleaves II   +7 more
wiley   +1 more source

The sustainability of habitability on terrestrial planets: Insights, questions, and needed measurements from Mars for understanding the evolution of Earth-like worlds [PDF]

, 2018
What allows a planet to be both within a potentially habitable zone and sustain habitability over long geologic time? With the advent of exoplanetary astronomy and the ongoing discovery of terrestrial-type planets around other stars, our own solar system
Niles, P. B., Fischer, W. W., Rice, M. S., Wray, J. J., Toplis, M. J., Hayes, A. G., Herd, C. D. K., Cohen, B. A., Kerber, L., Stevenson, D. J., Horgan, B., Stewart, S. T., Golombek, M. P., Ehlmann, B. L., Fraeman, A. A., Usui, T., Yingst, R. A., Hamilton, V. E., Elkins-Tanton, L. T., Wordsworth, R. D., Zahnle, K. J., Yung, Y. L., Quantin-Nataf, C., Lunine, J. I., Edwards, C. S., Hu, R., Knutson, H. A., McCubbin, F. M., Johnson, J. R., Farley, K. A., Kasting, J. F., Stack, K. M., Andrews-Hanna, J., Kite, E. S., Kinch, K. M., Catling, D. C., Jakosky, B. M., Mahaffy, P. R., Anderson, F. S., Fassett, C. I., Mustard, J. F., Werner, S. C., Dressing, C. D., Christensen, P. R., Weiss, Benjamin P., Mangold, N.   +45 more
core   +3 more sources

Three regimes of extrasolar planet radius inferred from host star metallicities. [PDF]

Nature, 2014
Approximately half of the extrasolar planets (exoplanets) with radii less than four Earth radii are in orbits with short periods. Despite their sheer abundance, the compositions of such planets are largely unknown.
Buchhave LA, Bizzarro M, Latham DW, Sasselov D, Cochran WD, Endl M, Isaacson H, Juncher D, Marcy GW.   +8 more
europepmc   +3 more sources

WARM SATURNS: ON THE NATURE OF RINGS AROUND EXTRASOLAR PLANETS THAT RESIDE INSIDE THE ICE LINE [PDF]

, 2011
We discuss the nature of rings that may exist around extrasolar planets. Taking the general properties of rings around the gas giants in the solar system, we infer the likely properties of rings around exoplanets that reside inside the ice line.
Hilke E. Schlichting, Chang, Philip, Philip Chang, Schlichting, Hilke E.   +3 more
core   +1 more source

Are extrasolar oceans common throughout the Galaxy? [PDF]

, 2007
International audienceLight and cold extrasolar planets such as OGLE 2005-BLG-390Lb, a 5.5 Earth masses planet detected via microlensing, could be frequent in the Galaxy according to some preliminary results from microlensing experiments.
Ehrenreich, David, Ehrenreich, D., Cassan, Arnaud, Cassan, A.   +3 more
core   +1 more source

Atmospheres of brown dwarfs [PDF]

, 2014
ChH highlights financial support of the European Community under the FP7 by an ERC starting grant. SLC acknowledges financial support of University of LeicesterBrown Dwarfs are the coolest class of stellar objects known to date. Our present perception is
Casewell, Sarah, Helling, Christiane
core   +1 more source

From planetesimals to planets: volatile molecules [PDF]

, 2014
Context. Solar and extrasolar planets are the subject of numerous studies aiming to determine their chemical composition and internal structure. In the case of extrasolar planets, the composition is important as it partly governs their potential ...
Amaury Thiabaud, Cabral, N., Alibert, Yann, Nahuel Cabral, Alibert, Y., Ulysse Marboeuf, Benz, Willy, Willy Benz, Cabral, Nahuel, Thiabaud, Amaury, Marboeuf, Ulysse, Marboeuf, U., Thiabaud, A., Yann Alibert, Benz, W.   +14 more
core   +1 more source

Direct Imaging and Spectroscopy of Extrasolar Planets [PDF]

, 2023
Direct imaging and spectroscopy is the likely means by which we will someday identify, confirm, and characterize an Earth-like planet around a nearby Sun-like star.
Lagrange, Anne-Marie, Biller, Beth, De Rosa, Robert, Bonnefoy, Mickael, Currie, Thayne, Guyon, Olivier, Marois, Christian, Nielsen, Eric   +7 more
core   +1 more source

Two Earth-sized planets orbiting Kepler-20 [PDF]

, 2011
Since the discovery of the first extrasolar giant planets around Sun-like stars[superscript 1, 2], evolving observational capabilities have brought us closer to the detection of true Earth analogues.
Ford, Eric B., Roger, L.A., Fressin, Francois, Ballard, S., Borucki, William J., Francois Fressin, Ciardi, D.R., Samuel N. Quinn, Shawn E. Seader, Latham, David W., Howell, Steve B., Charbonneau, David, Steve B. Howell, Susan E. Thompson, Matthew J. Holman, Torres, G., Holman, Matthew J., Ciardi, David R., Jean-Michel Désert, Geoffrey W. Marcy, Gautier, Thomas N., Jack J. Lissauer, Joseph D. Twicken, Rowe, Jason F., Still, Martin, Seager, Sara, Lars A. Buchhave, David G. Koch, Kamal Uddin, Latham, David, Sasselov, Dimitar D., Fergal Mullally, Charbonneau, D., Seader, Shawn E., Uddin, Kamal, David W. Latham, Henze, Christopher E., William J. Borucki, Thomas Barclay, Jason F. Rowe, Christopher E. Henze, Batalha, N.M., Twicken, Joseph D., Holman, Matthew, Dressing, Courtney D., Dimitar D. Sasselov, Ragozzine, Darin, Thompson, Susan E., Martin Still, Fressin, F., David R. Ciardi, Gautier III, Thomas N., Koch, David G., Sara Seager, Rowe, J.F., Rogers, Leslie A., Jenkins, Jon M., Jon M. Jenkins, Désert, Jean-Michel, Lissauer, Jack J., Marcy, Geoffrey W., Andrew Howard, Courtney D. Dressing, Ballard, Sarah, Batalha, Natalie M., Natalie M. Batalha, Sasselov, Dimitar, Bryson, S.T., Desert, Jean Michel, Buchhave, Lars C. Astrup, Borucki, W.J., Howard, Andrew, Quinn, Samuel N., Daniel C. Fabrycky, Barclay, Thomas, Mullally, Fergal, Thomas N. Gautier III, Bryson, Stephen T., Eric B. Ford, Rogers, Leslie Anne, Stephen T. Bryson, Guillermo Torres, Fabrycky, Daniel C., Darin Ragozzine, Sarah Ballard, Buchhave, Lars A., Leslie A. Rogers, Torres, Guillermo, David Charbonneau   +88 more
core   +1 more source