Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s -process Nucleosynthesis in Parent Stars and Implications for r - and p -processes
Abstract
We have analyzed molybdenum isotopes, together with strontium and barium isotopes, in 18 presolar silicon carbide grains using the Chicago Instrument for Laser Ionization (CHILI), a resonance ionization mass spectrometer. All observed isotope ratios can be explained by mixtures of pure s-process matter with isotopically solar material. Grain residues were subsequently analyzed for carbon, nitrogen, silicon, and sulfur isotopes, as well as a subset for 26Al–26Mg systematics using the NanoSIMS. These analyses showed that all but one grain are mainstream grains, most probably coming from low-mass asymptotic giant branch (AGB) stars. One grain is of the AB type, for which the origin is still a matter of debate. The high precision of molybdenum isotope measurements with CHILI provides the best estimate to date for s-process molybdenum made in low-mass AGB stars. The average molybdenum isotopic abundances produced by the s-process found in the analyzed mainstream SiC grains are 0% 92Mo, 0.73% 94Mo, 13.30% 95Mo, 36.34% 96Mo, 9.78% 97Mo, 39.42% 98Mo, and 0.43% 100Mo. Solar molybdenum can be explained as a combination of 45.9% s-process, 30.6% r-process, and 23.5% p-process contributions. Moreover, the observed variability in the individual grain data provides insights into the variability of conditions (neutron density, temperature, andmore »
- Authors:
-
- Univ. of Chicago, IL (United States); Chicago Center for Cosmochemistry, Chicago, IL (United States)
- Univ. of Chicago, IL (United States); Chicago Center for Cosmochemistry, Chicago, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Max Planck Society, Mainz (Germany)
- Univ. of Chicago, IL (United States); Chicago Center for Cosmochemistry, Chicago, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1544506
- Report Number(s):
- LLNL-JRNL-768104
Journal ID: ISSN 1538-4357; 958808
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 877; Journal Issue: 2; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; circumstellar matter; dust; extinction; meteorites; meteors; meteoroid; nuclear reactions; nucleosynthesis; abundances; stars: AGB and post-AGB
Citation Formats
Stephan, Thomas, Trappitsch, Reto, Hoppe, Peter, Davis, Andrew M., Pellin, Michael J., and Pardo, Olivia S. Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s -process Nucleosynthesis in Parent Stars and Implications for r - and p -processes. United States: N. p., 2019.
Web. doi:10.3847/1538-4357/ab1c60.
Stephan, Thomas, Trappitsch, Reto, Hoppe, Peter, Davis, Andrew M., Pellin, Michael J., & Pardo, Olivia S. Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s -process Nucleosynthesis in Parent Stars and Implications for r - and p -processes. United States. https://doi.org/10.3847/1538-4357/ab1c60
Stephan, Thomas, Trappitsch, Reto, Hoppe, Peter, Davis, Andrew M., Pellin, Michael J., and Pardo, Olivia S. Fri .
"Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s -process Nucleosynthesis in Parent Stars and Implications for r - and p -processes". United States. https://doi.org/10.3847/1538-4357/ab1c60. https://www.osti.gov/servlets/purl/1544506.
@article{osti_1544506,
title = {Molybdenum Isotopes in Presolar Silicon Carbide Grains: Details of s -process Nucleosynthesis in Parent Stars and Implications for r - and p -processes},
author = {Stephan, Thomas and Trappitsch, Reto and Hoppe, Peter and Davis, Andrew M. and Pellin, Michael J. and Pardo, Olivia S.},
abstractNote = {We have analyzed molybdenum isotopes, together with strontium and barium isotopes, in 18 presolar silicon carbide grains using the Chicago Instrument for Laser Ionization (CHILI), a resonance ionization mass spectrometer. All observed isotope ratios can be explained by mixtures of pure s-process matter with isotopically solar material. Grain residues were subsequently analyzed for carbon, nitrogen, silicon, and sulfur isotopes, as well as a subset for 26Al–26Mg systematics using the NanoSIMS. These analyses showed that all but one grain are mainstream grains, most probably coming from low-mass asymptotic giant branch (AGB) stars. One grain is of the AB type, for which the origin is still a matter of debate. The high precision of molybdenum isotope measurements with CHILI provides the best estimate to date for s-process molybdenum made in low-mass AGB stars. The average molybdenum isotopic abundances produced by the s-process found in the analyzed mainstream SiC grains are 0% 92Mo, 0.73% 94Mo, 13.30% 95Mo, 36.34% 96Mo, 9.78% 97Mo, 39.42% 98Mo, and 0.43% 100Mo. Solar molybdenum can be explained as a combination of 45.9% s-process, 30.6% r-process, and 23.5% p-process contributions. Moreover, the observed variability in the individual grain data provides insights into the variability of conditions (neutron density, temperature, and timescale) during s-process nucleosynthesis in the grains' parent stars, as they have subtle effects on specific molybdenum isotope ratios. Lastly, the results indicate that the ratio between p- and r-process molybdenum in presolar SiC from many different types of parent stars is Mo p /Mo r = 0.767, the value inferred for the solar system and consistent with what has been found in bulk samples and leachates of primitive meteorites.},
doi = {10.3847/1538-4357/ab1c60},
journal = {The Astrophysical Journal (Online)},
number = 2,
volume = 877,
place = {United States},
year = {Fri May 31 00:00:00 EDT 2019},
month = {Fri May 31 00:00:00 EDT 2019}
}
Web of Science
Works referenced in this record:
Presolar SiC in chondrites: How variable and how many sources?
journal, June 1993
- O'D Alexander, C. M.
- Geochimica et Cosmochimica Acta, Vol. 57, Issue 12
Interstellar grains in meteorites: I. Isolation of SiC, graphite and diamond; size distributions of SiC and graphite
journal, January 1994
- Amari, Sachiko; Lewis, Roy S.; Anders, Edward
- Geochimica et Cosmochimica Acta, Vol. 58, Issue 1
Presolar SiC Grains of Type A and B: Their Isotopic Compositions and Stellar Origins
journal, September 2001
- Amari, Sachiko; Nittler, Larry R.; Zinner, Ernst
- The Astrophysical Journal, Vol. 559, Issue 1
The Nubase2012 evaluation of nuclear properties
journal, December 2012
- Audi, G.; Kondev, F. G.; Wang, M.
- Chinese Physics C, Vol. 36, Issue 12
Ba isotopic compositions in stardust SiC grains from the Murchison meteorite: Insights into the stellar origins of large SiC grains
journal, November 2013
- Ávila, Janaína N.; Ireland, Trevor R.; Gyngard, Frank
- Geochimica et Cosmochimica Acta, Vol. 120
Constraining the 13 C neutron source in AGB stars through isotopic analysis of trace elements in presolar SiC
journal, August 2007
- Barzyk, J. G.; Savina, M. R.; Davis, A. M.
- Meteoritics & Planetary Science, Vol. 42, Issue 7-8
The origin and evolution of r - and s -process elements in the Milky Way stellar disk
journal, January 2016
- Battistini, Chiara; Bensby, Thomas
- Astronomy & Astrophysics, Vol. 586
Constraints on Stellar Grain Formation from Presolar Graphite in the Murchison Meteorite
journal, December 1996
- Bernatowicz, Thomas J.; Cowsik, Ramanath; Gibbons, Patrick C.
- The Astrophysical Journal, Vol. 472, Issue 2
The s-process in low-metallicity stars - II. Interpretation of high-resolution spectroscopic observations with asymptotic giant branch models: The s-process in low-metallicity stars - II
journal, October 2011
- Bisterzo, S.; Gallino, R.; Straniero, O.
- Monthly Notices of the Royal Astronomical Society, Vol. 418, Issue 1
GALACTIC CHEMICAL EVOLUTION AND SOLAR s -PROCESS ABUNDANCES: DEPENDENCE ON THE 13 C-POCKET STRUCTURE
journal, April 2014
- Bisterzo, S.; Travaglio, C.; Gallino, R.
- The Astrophysical Journal, Vol. 787, Issue 1
GALACTIC CHEMICAL EVOLUTION: THE IMPACT OF THE 13 C-POCKET STRUCTURE ON THE s -PROCESS DISTRIBUTION
journal, January 2017
- Bisterzo, S.; Travaglio, C.; Wiescher, M.
- The Astrophysical Journal, Vol. 835, Issue 1
Production of Mo and Ru Isotopes in Neutrino-driven Winds: Implications for Solar Abundances and Presolar Grains
journal, October 2018
- Bliss, J.; Arcones, A.; Qian, Y. -Z.
- The Astrophysical Journal, Vol. 866, Issue 2
Molybdenum isotopic evidence for the origin of chondrules and a distinct genetic heritage of carbonaceous and non-carbonaceous meteorites
journal, November 2016
- Budde, Gerrit; Burkhardt, Christoph; Brennecka, Gregory A.
- Earth and Planetary Science Letters, Vol. 454
Hf-W chronology of CR chondrites: Implications for the timescales of chondrule formation and the distribution of 26Al in the solar nebula
journal, February 2018
- Budde, Gerrit; Kruijer, Thomas S.; Kleine, Thorsten
- Geochimica et Cosmochimica Acta, Vol. 222
Origin of isotopic heterogeneity in the solar nebula by thermal processing and mixing of nebular dust
journal, December 2012
- Burkhardt, Christoph; Kleine, Thorsten; Dauphas, Nicolas
- Earth and Planetary Science Letters, Vol. 357-358
Molybdenum isotope anomalies in meteorites: Constraints on solar nebula evolution and origin of the Earth
journal, December 2011
- Burkhardt, Christoph; Kleine, Thorsten; Oberli, Felix
- Earth and Planetary Science Letters, Vol. 312, Issue 3-4
Nucleosynthesis in Asymptotic Giant Branch Stars: Relevance for Galactic Enrichment and Solar System Formation
journal, September 1999
- Busso, M.; Gallino, R.; Wasserburg, G. J.
- Annual Review of Astronomy and Astrophysics, Vol. 37, Issue 1
Placing the Sun and Mainstream S[CLC]i[/CLC]C Particles in Galactic Chemodynamic Evolution
journal, July 1997
- Clayton, D. D.
- The Astrophysical Journal, Vol. 484, Issue 1
Placing the Sun in Galactic Chemical Evolution: Mainstream SiC Particles
journal, July 1997
- Clayton, D. D.; Timmes, F. X.
- The Astrophysical Journal, Vol. 483, Issue 1
Evolution, Nucleosynthesis, and Yields of Low-Mass Asymptotic Giant Branch Stars at Different Metallicities
journal, April 2009
- Cristallo, S.; Straniero, O.; Gallino, R.
- The Astrophysical Journal, Vol. 696, Issue 1
Molybdenum Nucleosynthetic Dichotomy Revealed in Primitive Meteorites
journal, April 2002
- Dauphas, N.; Marty, B.; Reisberg, L.
- The Astrophysical Journal, Vol. 569, Issue 2
Stardust in meteorites
journal, November 2011
- Davis, A. M.
- Proceedings of the National Academy of Sciences, Vol. 108, Issue 48
KADoNiS- The Karlsruhe Astrophysical Database of Nucleosynthesis in Stars
conference, January 2006
- Dillmann, I.
- CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: 12th International Symposium, AIP Conference Proceedings
The Karlsruhe Astrophysical Database of Nucleosynthesis in Stars Project – Status and Prospects
journal, June 2014
- Dillmann, I.; Szücs, T.; Plag, R.
- Nuclear Data Sheets, Vol. 120
Anomalous odd- to even-mass isotope ratios in resonance ionization with broad-band lasers
journal, August 1989
- Fairbank, W. M.; Spaar, M. T.; Parks, J. E.
- Physical Review A, Vol. 40, Issue 4
Co-Production of Light p -, s - and r -Process Isotopes in the High-Entropy Wind of Type II Supernovae
journal, January 2009
- Farouqi, K.; Kratz, K. -L.; Pfeiffer, B.
- Publications of the Astronomical Society of Australia, Vol. 26, Issue 3
The puzzle of silicon, titanium, and magnesium anomalies in meteoritic silicon carbide grains
journal, July 1994
- Gallino, Roberto; Raiteri, Claudia M.; Busso, Maurizio
- The Astrophysical Journal, Vol. 430
INTERSTELLAR EXPOSURE AGES OF LARGE PRESOLAR SiC GRAINS FROM THE MURCHISON METEORITE
journal, March 2009
- Gyngard, Frank; Amari, Sachiko; Zinner, Ernst
- The Astrophysical Journal, Vol. 694, Issue 1
INTERSTELLAR RESIDENCE TIMES OF PRESOLAR SiC DUST GRAINS FROM THE MURCHISON CARBONACEOUS METEORITE
journal, May 2009
- Heck, Philipp R.; Gyngard, Frank; Ott, Ulrich
- The Astrophysical Journal, Vol. 698, Issue 2
CONVECTIVE-REACTIVE PROTON- 12 C COMBUSTION IN SAKURAI'S OBJECT (V4334 SAGITTARII) AND IMPLICATIONS FOR THE EVOLUTION AND YIELDS FROM THE FIRST GENERATIONS OF STARS
journal, January 2011
- Herwig, Falk; Pignatari, Marco; Woodward, Paul R.
- The Astrophysical Journal, Vol. 727, Issue 2
Production of the Light p-Process Nuclei in Neutrino-driven Winds
journal, March 1996
- Hoffman, R. D.; Woosley, S. E.; Fuller, G. M.
- The Astrophysical Journal, Vol. 460
Carbon, nitrogen, magnesium, silicon, and titanium isotopic compositions of single interstellar silicon carbide grains from the Murchison carbonaceous chondrite
journal, July 1994
- Hoppe, Peter; Amari, Sachiko; Zinner, Ernst
- The Astrophysical Journal, Vol. 430
NanoSIMS: Technical Aspects and Applications in Cosmochemistry and Biological Geochemistry
journal, May 2013
- Hoppe, Peter; Cohen, Stephanie; Meibom, Anders
- Geostandards and Geoanalytical Research, Vol. 37, Issue 2
Sulfur Molecule Chemistry in Supernova Ejecta Recorded by Silicon Carbide Stardust
journal, January 2012
- Hoppe, Peter; Fujiya, Wataru; Zinner, Ernst
- The Astrophysical Journal, Vol. 745, Issue 2
NanoSIMS STUDIES OF SMALL PRESOLAR SiC GRAINS: NEW INSIGHTS INTO SUPERNOVA NUCLEOSYNTHESIS, CHEMISTRY, AND DUST FORMATION
journal, July 2010
- Hoppe, Peter; Leitner, Jan; Gröner, Elmar
- The Astrophysical Journal, Vol. 719, Issue 2
New Insights into the Galactic Chemical Evolution of Magnesium and Silicon Isotopes from Studies of Silicate Stardust
journal, December 2018
- Hoppe, Peter; Leitner, Jan; Kodolányi, János
- The Astrophysical Journal, Vol. 869, Issue 1
Sulfur in presolar silicon carbide grains from asymptotic giant branch stars
journal, May 2015
- Hoppe, Peter; Lodders, Katharina; Fujiya, Wataru
- Meteoritics & Planetary Science, Vol. 50, Issue 6
Small SiC grains and a nitride grain of circumstellar origin from the Murchison meteorite: Implications for stellar evolution and nucleosynthesis
journal, March 1996
- Hoppe, Peter; Strebel, Roger; Eberhardt, Peter
- Geochimica et Cosmochimica Acta, Vol. 60, Issue 5
Isotopic systematics of presolar silicon carbide from the Orgueil (CI) chondrite: Implications for solar system formation and stellar nucleosynthesis
journal, December 1997
- Huss, Gary R.; Hutcheon, Ian D.; Wasserburg, G. J.
- Geochimica et Cosmochimica Acta, Vol. 61, Issue 23
Age of Jupiter inferred from the distinct genetics and formation times of meteorites
journal, June 2017
- Kruijer, Thomas S.; Burkhardt, Christoph; Budde, Gerrit
- Proceedings of the National Academy of Sciences
Resonance ionization mass spectrometry for precise measurements of isotope ratios
journal, November 2009
- Levine, Jonathan; Savina, Michael R.; Stephan, Thomas
- International Journal of Mass Spectrometry, Vol. 288, Issue 1-3
Host Phase of a Strange Xenon Component in Allende
journal, December 1975
- Lewis, R. S.; Srinivasan, B.; Anders, E.
- Science, Vol. 190, Issue 4221
Interstellar diamonds in meteorites
journal, March 1987
- Lewis, Roy S.; Ming, Tang; Wacker, John F.
- Nature, Vol. 326, Issue 6109
THE 13 C-POCKET STRUCTURE IN AGB MODELS: CONSTRAINTS FROM ZIRCONIUM ISOTOPE ABUNDANCES IN SINGLE MAINSTREAM SiC GRAINS
journal, June 2014
- Liu, Nan; Gallino, Roberto; Bisterzo, Sara
- The Astrophysical Journal, Vol. 788, Issue 2
New Constraints on the Major Neutron Source in Low-mass AGB Stars
journal, September 2018
- Liu, Nan; Gallino, Roberto; Cristallo, Sergio
- The Astrophysical Journal, Vol. 865, Issue 2
STELLAR ORIGINS OF EXTREMELY 13 C- AND 15 N-ENRICHED PRESOLAR SIC GRAINS: NOVAE OR SUPERNOVAE?
journal, March 2016
- Liu, Nan; Nittler, Larry R.; Alexander, Conel M. O’D.
- The Astrophysical Journal, Vol. 820, Issue 2
Stellar Origin of 15 N-rich Presolar SiC Grains of Type AB: Supernovae with Explosive Hydrogen Burning
journal, June 2017
- Liu, Nan; Nittler, Larry R.; Pignatari, Marco
- The Astrophysical Journal, Vol. 842, Issue 1
BARIUM ISOTOPIC COMPOSITION OF MAINSTREAM SILICON CARBIDES FROM MURCHISON: CONSTRAINTS FOR s -PROCESS NUCLEOSYNTHESIS IN ASYMPTOTIC GIANT BRANCH STARS
journal, April 2014
- Liu, Nan; Savina, Michael R.; Davis, Andrew M.
- The Astrophysical Journal, Vol. 786, Issue 1
Correlated Strontium and Barium Isotopic Compositions of Acid-Cleaned Single Mainstream Silicon Carbides from Murchison
journal, April 2015
- Liu, Nan; Savina, Michael R.; Gallino, Roberto
- The Astrophysical Journal, Vol. 803, Issue 1
J-type Carbon Stars: A Dominant Source of 14 N-rich Presolar SiC Grains of Type AB
journal, July 2017
- Liu, Nan; Stephan, Thomas; Boehnke, Patrick
- The Astrophysical Journal, Vol. 844, Issue 1
Common Occurrence of Explosive Hydrogen Burning in Type II Supernovae
journal, March 2018
- Liu, Nan; Stephan, Thomas; Boehnke, Patrick
- The Astrophysical Journal, Vol. 855, Issue 2
Isotopic Compositions of Strontium, Zirconium, Molybdenum, and Barium in Single Presolar SiC Grains and Asymptotic Giant Branch Stars
journal, August 2003
- Lugaro, Maria; Davis, Andrew M.; Gallino, Roberto
- The Astrophysical Journal, Vol. 593, Issue 1
THE IMPACT OF UPDATED Zr NEUTRON-CAPTURE CROSS SECTIONS AND NEW ASYMPTOTIC GIANT BRANCH MODELS ON OUR UNDERSTANDING OF THE S PROCESS AND THE ORIGIN OF STARDUST
journal, December 2013
- Lugaro, Maria; Tagliente, Giuseppe; Karakas, Amanda I.
- The Astrophysical Journal, Vol. 780, Issue 1
The New “York” Regression: Application of an Improved Statistical Method to Geochemistry
journal, April 1996
- Mahon, Keith I.
- International Geology Review, Vol. 38, Issue 4
Iron and Nickel Isotopic Ratios in Presolar SiC Grains
journal, December 2008
- Marhas, Kuljeet K.; Amari, Sachiko; Gyngard, Frank
- The Astrophysical Journal, Vol. 689, Issue 1
NanoSIMS studies of Ba isotopic compositions in single presolar silicon carbide grains from AGB stars and supernovae
journal, August 2007
- Marhas, K. K.; Hoppe, P.; Ott, U.
- Meteoritics & Planetary Science, Vol. 42, Issue 7-8
A 15N-Poor Isotopic Composition for the Solar System As Shown by Genesis Solar Wind Samples
journal, June 2011
- Marty, B.; Chaussidon, M.; Wiens, R. C.
- Science, Vol. 332, Issue 6037
Isotopic compositions of the elements 2013 (IUPAC Technical Report)
journal, March 2016
- Meija, Juris; Coplen, Tyler B.; Berglund, Michael
- Pure and Applied Chemistry, Vol. 88, Issue 3
Molybdenum and Zirconium Isotopes from a Supernova Neutron Burst
journal, September 2000
- Meyer, B. S.; Clayton, D. D.; The, L. -S.
- The Astrophysical Journal, Vol. 540, Issue 1
s-Process Zirconium in Presolar Silicon Carbide Grains
journal, August 1997
- Nicolussi, G. K.
- Science, Vol. 277, Issue 5330
Molybdenum Isotopic Composition of Individual Presolar Silicon Carbide Grains from the Murchison Meteorite
journal, March 1998
- Nicolussi, G. K.; Pellin, M. J.; Lewis, R. S.
- Geochimica et Cosmochimica Acta, Vol. 62, Issue 6
Strontium Isotopic Composition in Individual Circumstellar Silicon Carbide Grains: A Record of -Process Nucleosynthesis
journal, October 1998
- Nicolussi, G. K.; Pellin, M. J.; Lewis, R. S.
- Physical Review Letters, Vol. 81, Issue 17
Automated isotopic measurements of micron-sized dust: application to meteoritic presolar silicon carbide
journal, December 2003
- Nittler, Larry R.; Alexander, Conel M. O'D.
- Geochimica et Cosmochimica Acta, Vol. 67, Issue 24
Astrophysics with Extraterrestrial Materials
journal, September 2016
- Nittler, Larry R.; Ciesla, Fred
- Annual Review of Astronomy and Astrophysics, Vol. 54, Issue 1
Are Presolar Silicon Carbide Grains from Novae Actually from Supernovae?
journal, August 2005
- Nittler, Larry R.; Hoppe, Peter
- The Astrophysical Journal, Vol. 631, Issue 1
Discovery of s-process barium in the Murchison meteorite
journal, April 1990
- Ott, U.; Begemann, F.
- The Astrophysical Journal, Vol. 353
s ‐Process Sr Isotopic Compositions in Presolar SiC from the Murchison Meteorite
journal, April 2004
- Podosek, F. A.; Prombo, C. A.; Amari, S.
- The Astrophysical Journal, Vol. 605, Issue 2
S-process BA isotopic compositions in presolar SiC from the Murchison meteorite
journal, June 1993
- Prombo, C. A.; Podosek, F. A.; Amari, S.
- The Astrophysical Journal, Vol. 410
Rare gases in the chondrite Renazzo
journal, August 1964
- Reynolds, J. H.; Turner, G.
- Journal of Geophysical Research, Vol. 69, Issue 15
Barium isotopes in individual presolar silicon carbide grains from the Murchison meteorite
journal, September 2003
- Savina, Michael R.; Davis, Andrew M.; Tripa, C. Emil
- Geochimica et Cosmochimica Acta, Vol. 67, Issue 17
Analyzing individual presolar grains with CHARISMA
journal, September 2003
- Savina, Michael R.; Pellin, Michael J.; Tripa, C. Emil
- Geochimica et Cosmochimica Acta, Vol. 67, Issue 17
CHILI – the Chicago Instrument for Laser Ionization – a new tool for isotope measurements in cosmochemistry
journal, August 2016
- Stephan, Thomas; Trappitsch, Reto; Davis, Andrew M.
- International Journal of Mass Spectrometry, Vol. 407
Strontium and barium isotopes in presolar silicon carbide grains measured with CHILI—two types of X grains
journal, January 2018
- Stephan, Thomas; Trappitsch, Reto; Davis, Andrew M.
- Geochimica et Cosmochimica Acta, Vol. 221
Correction of dead time effects in time‐of‐flight mass spectrometry
journal, March 1994
- Stephan, T.; Zehnpfenning, J.; Benninghoven, A.
- Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 12, Issue 2
s process in low-mass asymptotic giant branch stars
journal, October 2006
- Straniero, Oscar; Gallino, Roberto; Cristallo, Sergio
- Nuclear Physics A, Vol. 777
Beta-decay rates of highly ionized heavy atoms in stellar interiors
journal, May 1987
- Takahashi, K.; Yokoi, K.
- Atomic Data and Nuclear Data Tables, Vol. 36, Issue 3
The stellar neutron capture cross sections of Zr-94 and Zr-96
journal, January 1990
- Toukan, K. A.; Kaeppeler, F.
- The Astrophysical Journal, Vol. 348
SULFUR ISOTOPIC COMPOSITIONS OF SUBMICROMETER SiC GRAINS FROM THE MURCHISON METEORITE
journal, January 2015
- Xu, Yuchen; Zinner, Ernst; Gallino, Roberto
- The Astrophysical Journal, Vol. 799, Issue 2
Least squares fitting of a straight line with correlated errors
journal, January 1968
- York, Derek
- Earth and Planetary Science Letters, Vol. 5
S-process Ba, Nd, and SM in presolar SiC from the Murchison meteorite
journal, November 1991
- Zinner, Ernst; Amari, Sachiko; Lewis, Roy S.
- The Astrophysical Journal, Vol. 382
Stardust in meteorites [スターダストに魅せられて]
journal, January 2004
- Amari, Sachiko
- TRENDS IN THE SCIENCES, Vol. 9, Issue 9
Co-production of light p-, s- and r-process isotopes in the high-entropy wind of type II supernovae
text, January 2009
- Farouqi, K.; Kratz, K. -L.; Pfeiffer, B.
- arXiv
Convective-reactive proton-C12 combustion in Sakurai's object (V4334 Sagittarii) and implications for the evolution and yields from the first generations of stars
text, January 2010
- Herwig, Falk; Pignatari, Marco; Woodward, Paul R.
- arXiv
Galactic Chemical Evolution and solar s-process abundances: dependence on the 13C-pocket structure
text, January 2014
- Bisterzo, S.; Travaglio, C.; Gallino, R.
- arXiv
The 13C-Pocket Structure in AGB Models: Constraints from Zirconium Isotope Abundances in Single Mainstream SiC Grains
text, January 2014
- Liu, Nan; Gallino, Roberto; Bisterzo, Sara
- arXiv
Correlated Strontium and Barium Isotopic Compositions of Acid-Cleaned Single Silicon Carbides from Murchison
text, January 2015
- Liu, Nan; Savina, Michael R.; Gallino, Roberto
- arXiv
Galactic Chemical Evolution: the Impact of the 13C-pocket Structure on the s-process Distribution
text, January 2017
- Bisterzo, S.; Travaglio, C.; Wiescher, M.
- arXiv
Stellar origin of 15N-rich presolar SiC grains of type AB: supernovae with explosive hydrogen burning
text, January 2017
- Liu, Nan; Nittler, Larry R.; Pignatari, Marco
- arXiv
Production of Mo and Ru isotopes in neutrino-driven winds: implications for solar abundances and presolar grains
text, January 2018
- Bliss, Julia; Arcones, Almudena; Qian, Yong-Zhong
- arXiv
s Process in low-mass Asymptotic Giant Branch Stars
text, January 2005
- Straniero, O.; Gallino, R.; Cristallo, S.
- arXiv
Works referencing / citing this record:
Presolar Silicon Carbide Grains of Types Y and Z: Their Molybdenum Isotopic Compositions and Stellar Origins
journal, August 2019
- Liu, Nan; Stephan, Thomas; Cristallo, Sergio
- The Astrophysical Journal, Vol. 881, Issue 1
Isotopes of Barium as a Chronometer for Supernova Dust Formation
journal, November 2019
- Ott, Ulrich; Stephan, Thomas; Hoppe, Peter
- The Astrophysical Journal, Vol. 885, Issue 2
Isotopic Signatures of Supernova Nucleosynthesis in Presolar Silicon Carbide Grains of Type AB with Supersolar 14 N/ 15 N Ratios
journal, December 2019
- Hoppe, Peter; Stancliffe, Richard J.; Pignatari, Marco
- The Astrophysical Journal, Vol. 887, Issue 1
Presolar Silicon Carbide Grains of Types Y and Z: Their Molybdenum Isotopic Compositions and Stellar Origins
text, January 2019
- Liu, Nan; Stephan, Thomas; Cristallo, Sergio
- arXiv