Zobrazeno 1 - 10
of 104
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
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
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:
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:
Cayman T. Unterborn, Bradford J. Foley, Steven J. Desch, Patrick A. Young, Gregory Vance, Lee Chiffelle, Stephen R. Kane
Publikováno v:
The Astrophysical Journal Letters. 930:L6
The ideal exoplanets to search for life are those within a star's habitable zone. However, even within the habitable zone planets can still develop uninhabitable climate states. Sustaining a temperate climate over geologic ($\sim$Gyr) timescales requ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da0bbfd4489e62110a001a19d8391553
https://doi.org/10.3847/2041-8213/ac6596
https://doi.org/10.3847/2041-8213/ac6596
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