Results 31 to 40 of about 92 (70)

Highly Heterogeneous Parent Body of the Rare Andesitic Erg Chech 002 Meteorite Revealed by the Revisited Mn–Cr Isotopic Systematics

The Planetary Science Journal
Erg Chech 002 (EC 002), an andesitic meteorite, has been dated to be the oldest magmatic rock in the solar system. However, controversy has arisen due to inconsistent dating results and isotopic compositions in previous studies, which complicates ...
Bing Yang, Runlian Pang, Qing Wang, Anning Zhang, Wei Du, Liping Qin   +5 more
doaj   +1 more source

Robust r-process Nucleosynthesis beyond Lanthanides in the Common Envelop Jet Supernovae

The Astrophysical Journal
The common envelop jet supernovae (CEJSNe) r -process scenario has been proposed as an r -process nucleosynthesis site in the past decade. Jets launched by a neutron star that spirals in inside the core of a red supergiant star in a common envelope ...
Shilun Jin, Noam Soker
doaj   +1 more source

The CAI Database: 26Al–26Mg Isotope Systematics

The Astrophysical Journal Supplement Series
We present a publicly available calcium–aluminum-rich inclusion (CAI) database that focuses on the initial ^26 Al/ ^27 Al _0 ratio in CAIs, designed in a way that researchers in cosmochemistry and astrophysics may find useful.
Emilie T. Dunham, Ming-Chang Liu, Aman Burman, Fatima Jorge-Chavez, Danielle Leuer, Ashley K. Herbst, François L. H. Tissot, Kevin D. McKeegan   +7 more
doaj   +1 more source

Ther‐Process in the Neutrino Winds of Core‐Collapse Supernovae and U‐Th Cosmochronology

The Astrophysical Journal, 2002
The discovery of the second highly $r$-process-enhanced, extremely metal-poor star, CS 31082-001 ([Fe/H] $= -2.9$) has provided a powerful new tool for age determination, by virtue of the detection and measurement of the radioactive species uranium and thorium.
Wanajo, Shinya, Itoh, Naoki, Ishimaru, Yuhri, Nozawa, Satoshi, Beers, Timothy C.   +4 more
openaire   +2 more sources

Diffusion kinetics of Cr in spinel: Experimental studies and implications for 53Mn–53Cr cosmochronology

Geochimica et Cosmochimica Acta, 2016
AbstractThe 53Mn–53Cr decay system, in which 53Mn decays to 53Cr (t1/2=3.7Ma) has been widely used to construct 53Cr/52Cr vs. 55Mn/52Cr isochrons and thus determine relative ages of early solar system objects or events, assuming that the initial Cr isotopic ratio, (53Cr/52Cr)o, equals (53Mn/52Cr)o.
Posner, Esther S., Ganguly, Jibamitra, Hervig, Richard   +2 more
openaire   +1 more source

Issue Information

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 741-742, May 2026.
wiley   +1 more source

Direct determination of the atomic mass difference of Re187 and Os187 for neutrino physics and cosmochronology

Physical Review C - Nuclear Physics, 2016
For the first time a direct determination of the atomic mass difference of 187Re and 187Os has been performed with the Penning-trap mass spectrometer SHIPTRAP applying the novel phase-imaging ion-cyclotron-resonance technique. The obtained value of 2492(30stat)(15sys) eV is in excellent agreement with the Q values determined indirectly with ...
D. A. Nesterenko, S. Eliseev, K. Blaum, M. Block, S. Chenmarev, A. Dörr, C. Droese, P. E. Filianin, M. Goncharov, E. Minaya Ramirez, Yu. N. Novikov, L. Schweikhard, V. V. Simon   +12 more
openaire   +2 more sources

Condensation time of the solar nebula from extinct I in primitive meteorites. [PDF]

Proc Natl Acad Sci U S A, 1975
Lewis RS, Anders E.
europepmc   +1 more source

Thorium/neodymium cosmochronology and Galactic chemical evolution

The Astrophysical Journal, 1988
G. J. Mathews, D. N. Schramm
openaire   +1 more source

Recent progress and future prospects of the early solar system chronology. [PDF]

Natl Sci Rev
Amelin Y, Yin QZ.
europepmc   +1 more source