Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Steven J, Desch"'
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-4 (2022)
Externí odkaz:
https://doaj.org/article/bded1e3ab15845df94a2371ce7df492b
Autor:
Steven J. Desch, Emilie T. Dunham, Ashley K. Herbst, Cayman T. Unterborn, Thomas G. Sharp, Maitrayee Bose, Prajkta Mane, Curtis D. Williams
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 146 (2023)
Most meteoritic calcium-rich, aluminum-rich inclusions formed from a reservoir with ^26 Al/ ^27 Al ≈ 5 × 10 ^−5 , but some record lower ${({}^{26}\mathrm{Al}/{}^{27}\mathrm{Al})}_{0}$ , demanding they sampled a reservoir without live ^26 Al. Thi
Externí odkaz:
https://doaj.org/article/5cb5e3861c16489b8fca6bb9db7177cb
Autor:
Steven J. Desch, Alan P. Jackson
Publikováno v:
Astrobiology. 22(12)
The interstellar objects 1I/'Oumuamua and 2I/Borisov confirm the long-held expectation that bodies from one stellar system will be carried to another, allowing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::241623b7a69b55eeb869957b0b8cabe4
https://pubmed.ncbi.nlm.nih.gov/36475963
https://pubmed.ncbi.nlm.nih.gov/36475963
Publikováno v:
Icarus. 402:115607
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a92878696aef449860fb2d5742b2a207
https://doi.org/10.1016/j.icarus.2023.115607
https://doi.org/10.1016/j.icarus.2023.115607
Publikováno v:
Geostandards and Geoanalytical Research. 44:695-710
Beryllium-10 (t1/2 = 1.4 Ma) is a short-lived radionuclide present in the early Solar System. It is produced solely by irradiation reactions and can provide constraints on the astrophysical environment of the Sun's formation. Calcium- and aluminium-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82f1d60cf53427d063a973a4e902459a
https://doi.org/10.1111/ggr.12329
https://doi.org/10.1111/ggr.12329
Astrophysical models of planet formation require accurate radiometric dating of meteoritic components by short-lived (Al-Mg, Mn-Cr, Hf-W) and long-lived (Pb-Pb) chronometers, to develop a timeline of such events in the solar nebula as formation of Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f5cfab1b6da2fc4ba1c51bada30f05d
The deuterium-to-hydrogen (D/H or 2H/1H) ratio of Martian atmospheric water (~6x standard mean ocean water, SMOW) is higher than that of known sources, requiring planetary enrichment. A recent measurement by NASA's Mars Science Laboratory rover Curio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::575b3cfdae37caacc2a8836c0de24b99
Autor:
Alan Jackson, Steven J. Desch
Publikováno v:
Journal of Geophysical Research: Planets. 126
The origin of the interstellar object 1I/'Oumuamua has defied explanation. We perform calculations of the non-gravitational acceleration that would be experienced by bodies composed of a range of different ices and demonstrate that a body composed of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db9a2fbf8fc957d077500bf0a6662476
https://doi.org/10.1029/2020je006706
https://doi.org/10.1029/2020je006706
Autor:
Steven J. Desch, Alan Jackson
The origin of the interstellar object 1I/'Oumuamua, has defied explanation. In a companion paper (Jackson & Desch, 2021), we show that a body of N2 ice with axes 45 m x 44 m x 7.5 m at the time of observation would be consistent with its albedo, non-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ebb6c4d0cc5ba3dd85627dd0465f84f
http://arxiv.org/abs/2103.08812
http://arxiv.org/abs/2103.08812
We present evidence that excesses in Be in polluted white dwarfs (WDs) are the result of accretion of icy exomoons that formed in the radiation belts of giant exoplanets. Here we use excess Be in the white dwarf GALEX J2339-0424 as an example. We con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e0d995c7fb771acee6e5bfb8bf51d96
http://arxiv.org/abs/2102.01835
http://arxiv.org/abs/2102.01835