Galactic Chemical Evolution and solar s-process abundances: dependence on the 13C-pocket structure

Abstract

We study the s-process abundances (A > 90) at the epoch of the solar-system formation. AGB yields are computed with an updated neutron capture network and updated initial solar abundances. We confirm our previous results obtained with a Galactic Chemical Evolution (GCE) model: (i) as suggested by the s-process spread observed in disk stars and in presolar meteoritic SiC grains, a weighted average of s-process strengths is needed to reproduce the solar s-distribution of isotopes with A > 130; (ii) an additional contribution (of about 25%) is required in order to represent the solar s-process abundances of isotopes from A = 90 to 130. Furthermore, we investigate the effect of different internal structures of the 13C-pocket, which may affect the efficiency of the 13C(a, n)16O reaction, the major neutron source of the s-process. First, keeping the same 13C profile adopted so far, we modify by a factor of two the mass involved in the pocket; second, we assume a flat 13C profile in the pocket, and we test again the effects of the variation of the mass of the pocket. We find that GCE s-predictions at the epoch of the solar-system formation marginally depend on the size and shape of the 13C-pocket once a different weighted range of 13C-pocket strengths is assumed. We ascertain that, independently of the internal structure of the 13C-pocket, the missing solar-system s-process contribution in the range from A = 90 to 130 remains essentially the same.

arXiv commentAccepted for publication in The Astrophysical Journal (5 Figures, 2 Tables)

References in corpus (60)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results
• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Neutron capture in low mass Asymptotic Giant Branch stars: cross sections and abundance signatures
• Updated stellar yields from Asymptotic Giant Branch models
• Galactic Evolution of Sr, Y, Zr: A Multiplicity of Nucleosynthetic Processes
• The Extremely Metal-Poor, Neutron-Capture-Rich Star CS 22892-052: A Comprehensive Abundance Analysis
• Evolution, nucleosynthesis and yields of low mass AGB stars
• First stars VI - Abundances of C, N, O, Li, and mixing in extremely metal-poor giants. Galactic evolution of the light elements
• Nucleosynthesis and mixing on the Asymptotic Giant Branch. III. Predicted and observed s-process abundances
• Evolution, nucleosynthesis and yields of low mass AGB stars at different metallicities (II): the FRUITY database
• Detailed Abundances for 28 Metal-poor Stars: Stellar Relics in the Milky Way
• Yields of AGB and SAGB models with chemistry of low- and high-metallicity Globular Clusters
• Galactic chemical evolution of heavy elements: from Barium to Europium
• The s process in asymptotic giant branch stars of low metallicity and the composition of carbon-enhanced metal-poor stars
• Oxygen Abundances in Nearby FGK Stars and the Galactic Chemical Evolution of the Local Disk and Halo
• Nucleosynthesis in multi-dimensional SNIa explosions
• The s-Process in Low Metallicity Stars. II. Interpretation of High-Resolution Spectroscopic Observations with AGB models
• O/Fe in metal-poor main sequence and subgiant stars
• Non-standard s process in low metallicity massive rotating stars
• A Subaru/HDS study of Lead (Pb) abundances in eight s-process-element-rich, metal-poor stars
• Super and Massive AGB Stars: II - Nucleosynthesis and Yields - Z=0.02, 0.008 and 0.004
• Full computation of massive AGB evolution. I. The large impact of convection on nucleosynthesis
• Type Ia Supernovae as Sites of p-process: Two-Dimensional Models Coupled to Nucleosynthesis
• s-Process Nucleosynthesis in Carbon Stars
• The Kr85 s-process Branching and the Mass of Carbon Stars
• Neutrino-driven wind simulations and nucleosynthesis of heavy elements
• The Hamburg/ESO R-process Enhanced Star survey (HERES) III. HE 0338-3945 and the formation of the r+s stars
• Silver and palladium help unveil the nature of a second r-process
• Can Extra Mixing in RGB and AGB Stars Be Attributed to Magnetic Mechanisms?
• s-Process in Low Metallicity Stars. I. Theoretical Predictions
• Intermediate mass stars: updated models
• The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
• The s-Process in Rotating Asymptotic Giant Branch Stars
• Low mass AGB stellar models for 0.003 < Z < 0.02: basic formulae for nucleosynthesis calculations
• Full computation of massive AGB evolution. II. The role of mass loss and cross-sections
• Lead: Asymptotic Giant Branch production and Galactic Chemical Evolution
• s-Process Abundances in Planetary Nebulae
• Abundances of neutron-capture elements in stars of the galactic disk substructures
• Oxygen in the Very Early Galaxy
• Heavy Element Nucleosynthesis in the Brightest Galactic Asymptotic Giant Branch stars
• Oxygen abundances in low- and high-alpha field halo stars and the discovery of two field stars born in globular clusters
• Rubidium, zirconium, and lithium production in intermediate-mass asymptotic giant branch stars
• Dredge-up and envelope burning in intermediate mass giants of very low metallicity
• Rb-rich Asymptotic Giant Branch stars in the Magellanic Clouds
• News on the s process from young open clusters
• Rubidium in Metal-Deficient Disk and Halo Stars
• Hot bottom burning and s-process nucleosynthesis in massive AGB stars at the beginning of the thermally-pulsing phase
• Rubidium and lead abundances in giant stars of the globular clusters M4 and M5
• The evolution of low-metallicity asymptotic giant branch stars and the formation of carbon-enhanced metal-poor stars
• 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
• Germanium, Arsenic, and Selenium Abundances in Metal-Poor Stars
• Permitted Oxygen Abundances and the Temperature Scale of Metal-Poor Turn-Off Stars
• The chemical composition of carbon stars: The R-type stars
• Analysis of 26 Barium Stars II. Contributions of s-, r- and p-processes in the production of heavy elements
• Empirical Abundance Scaling Laws and Implications for the Gamma-Process in Core-Collapse Supernovae
• Galactic Chemical Evolution of the s Process from AGB Stars
• AGB nucleosynthesis in the Large Magellanic Cloud. Detailed abundance analysis of the RV Tauri star MACHO47.2496.8
• Neutron Capture Cross Sections for the Weak s Process
• Rubidium abundances in the globular clusters NGC 6752, NGC 1904 and NGC 104 (47 Tuc)

Cited by in corpus (173)

• Identification of strontium in the merger of two neutron stars
• Chemical evolution with rotating massive star yields: I. The solar neighbourhood and the s-process elements
• Stellar yields from metal-rich asymptotic giant branch models
• Neutron Star Mergers Might not be the Only Source of r-Process Elements in the Milky Way
• NuGrid stellar data set I. Stellar yields from H to Bi for stars with metallicities Z = 0.02 and Z = 0.01
• Current Status of r-Process Nucleosynthesis
• Chemodynamical history of the Galactic Bulge
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program II: Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd and Eu
• Galactic evolution of rapid neutron capture process abundances: the inhomogeneous approach
• Systematic non-LTE study of the $-2.6\le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu
• Evolution and nucleosynthesis of asymptotic giant branch stellar models of low metallicity
• The origin and evolution of r- and s-process elements in the Milky Way stellar disk
• Chemical evolution with rotating massive star yields II. A new assessment of the solar s- and r- process components
• Elemental and isotopic variability in solar system materials by mixing and processing of primordial disk reservoirs
• VLT/FLAMES high-resolution chemical abundances in Sculptor: a textbook dwarf spheroidal galaxy
• The GALAH survey: tracing the Galactic disk with Open Clusters
• The Branchings of the Main s-process: Their Sensitivity to alpha-induced Reactions on 13C and 22Ne and to the Uncertainties of the Nuclear Network
• The nucleosynthetic history of elements in the Galactic disk: [X/Fe] - age relations from high-precision spectroscopy
• The temporal evolution of neutron-capture elements in the Galactic discs
• StarHorse results for spectroscopic surveys + Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young-alpha rich stars
• The Hamburg/ESO R-process Enhanced Star survey (HERES) XI. The highly $r$-process-enhanced star CS 29497-004
• Modelling the spectra of the kilonova AT2017gfo -- I: The photospheric epochs
• How many nucleosynthesis processes exist at low metallicity?
• New insights on Ba over-abundance in open clusters. Evidence for the intermediate neutron-capture process at play?
• Elevated r-process enrichment in Gaia Sausage and Sequoia
• $s$-Processing in AGB Stars Revisited. II. Enhanced ${}^{13}$C Production Through MHD-Induced Mixing
• Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs
• The Hamburg/ESO R-process Enhanced Star survey (HERES) X. HE 2252-4225, one more r-process enhanced and actinide-boost halo star
• The early days of the Sculptor dwarf spheroidal galaxy
• The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis. II. Early chemical enrichment
• Correlated Strontium and Barium Isotopic Compositions of Acid-Cleaned Single Silicon Carbides from Murchison
• On the need of the Light Elements Primary Process (LEPP)
• High-resolution abundance analysis of red giants in the globular cluster NGC 6522
• From actinides to zinc: Using the full abundance pattern of the brightest star in Reticulum II to distinguish between different r-process sites
• Origin of uranium isotope variations in early solar nebula condensates
• Ages and heavy element abundances from very metal-poor stars in the Sagittarius dwarf galaxy
• Galactic Chemical Evolution: the Impact of the 13C-pocket Structure on the s-process Distribution
• The lanthanide fraction distribution in metal-poor stars: a test of neutron star mergers as the dominant r-process site
• The Chemical Composition of the Galactic Bulge and Implications for its Evolution
• Abundance-age relations with red clump stars in open clusters
• The Gaia-ESO Survey: the origin and evolution of s-process elements
• The Similarity of Abundance Ratio Trends and Nucleosynthetic Patterns in the Milky Way Disk and Bulge
• The chemical composition of red giants in 47 Tucanae I: Fundamental parameters and chemical abundance patterns
• i-Process Contribution of Rapidly Accreting White Dwarfs to the Solar Composition of First-Peak Neutron-Capture Elements
• The 13C-Pocket Structure in AGB Models: Constraints from Zirconium Isotope Abundances in Single Mainstream SiC Grains
• Origin of neutron capture elements with the Gaia-ESO survey: the evolution of s- and r-process elements across the Milky Way
• Evidence for $\gtrsim 4$ Gyr timescales of neutron star mergers from Galactic archaeology
• Radiogenic p-isotopes from SNIa, nuclear physics uncertainties and Galactic chemical evolution compared with values in primitive meteorites
• The Gaia-ESO Survey: Age-chemical-clock relations spatially resolved in the Galactic disc
• Abundance ratios in GALAH DR2 and their implications for nucleosynthesis
• Probing astrophysically important states in ${}^{26}$Mg nucleus to study neutron sources for the $s$-Process
• Element abundance patterns in stars indicate fission of nuclei heavier than uranium
• Discovery of a 760 nm P Cygni line in AT2017gfo: Identification of yttrium in the kilonova photosphere
• Abundance patterns of the light neutron-capture elements in very and extremely metal-poor stars
• Abundances of disk and bulge giants from high-resolution optical spectra -- IV. Zr, La, Ce, Eu
• The Gaia-ESO Survey: A new approach to chemically characterising young open clusters II. Abundances of the neutron-capture elements Cu, Sr, Y, Zr, Ba, La, and Ce
• Enrichment in r-process elements from multiple distinct events in the early Draco dwarf spheroidal galaxy
• Stellar abundances and presolar grains trace the nucleosynthetic origin of molybdenum and ruthenium
• Even-to-Odd Barium Isotope Ratio in Selected Galactic Halo Stars
• Abundances of neutron-capture elements in thin- and thick-disc stars in the solar neighbourhood
• Heavy elements Ba, La, Ce, Nd, and Eu in 56 Galactic bulge red giants
• The S2 Stream: the shreds of a primitive dwarf galaxy
• The detailed chemical abundance patterns of accreted halo stars from the optical to infrared
• High-resolution abundance analysis of red giants in the metal-poor bulge globular cluster HP~1
• High precision analysis of the solar twin HIP 100963
• On the Origin of the Early Solar System Radioactivities. Problems with the AGB and Massive Star Scenarios
• The chemical composition of globular clusters in the Local Group
• Using failed supernovae to constrain the Galactic r-process element production
• New constraints on the major neutron source in low-mass AGB stars
• The AMBRE Project: r-process elements in the Milky Way thin and thick discs
• Exploring the s-process history in the Galactic disk: Cerium abundances and gradients in Open Clusters from the OCCAM/APOGEE sample
• Observing the metal-poor solar neighbourhood: a comparison of galactic chemical evolution predictions
• High-resolution abundance analysis of HD 140283
• Fluorine in the solar neighbourhood: the need for several cosmic sources
• The Hamburg/ESO R-process Enhanced Star survey (HERES) IX. Constraining pure r-process Ba/Eu abundance ratio from observations of r-II stars
• The R-Process Alliance: Abundance Universality among Some Elements at and between the First and Second R-Process Peaks
• Spectroscopic r-Process Abundance Retrieval for Kilonovae I: The Inferred Abundance Pattern of Early Emission from GW170817
• The $\gamma$-process nucleosynthesis in core-collapse supernovae. I. A novel analysis of $\gamma$-process yields in massive stars
• Thorium in solar twins: implications for habitability in rocky planets
• Heavy elements in barium stars
• Solar r-process-constrained actinide production in neutrino-driven winds of supernovae
• OCCASO V. Chemical-abundance trends with Galactocentric distance and age
• s-Processing from MHD-induced mixing and isotopic abundances in presolar SiC grains
• Neutron-capture elements in dwarf galaxies II: Challenges for the s- and i-processes at low metallicity
• Evolution and nucleosynthesis of helium-rich asymptotic giant branch models
• The $Gaia$-ESO Survey: the inner disk intermediate-age open cluster NGC 6802
• The CARMENES search for exoplanets around M dwarfs: Rubidium abundances in nearby cool stars
• Residual Abundances in GALAH DR3: Implications for Nucleosynthesis and Identification of Unique Stellar Populations
• Nuclear processes in Astrophysics: Recent progress
• The chemical composition of $\alpha$ Cen AB revisited
• Trans-iron Ge, As, Se, and heavier elements in the dwarf metal-poor stars, HD~19445, HD~84937, HD~94028, HD~140283, and HD~160617
• Extreme r-process enhanced stars at high metallicity in Fornax
• Looking for imprints of the first stellar generations in metal-poor bulge field stars
• The study of key reactions shaping the post main-sequence evolution of massive stars in underground facilities
• Impact of hypernova νp-process nucleosynthesis on the galactic chemical evolution of Mo and Ru
• High-temperature ${}^{205}$Tl decay clarifies ${}^{205}$Pb dating in early Solar System
• Abundances and Depletions of Neutron-Capture Elements in the Interstellar Medium
• Extending the Chemical Reach of the H3 Survey: Detailed Abundances of the Dwarf-galaxy Stellar Stream Wukong/LMS-1
• Radiative levitation in carbon-enhanced metal-poor stars with s-process enrichment
• Chemical Evolution of Ytterbium in the Galactic Disk
• Re-evaluation of the ${}^{16}$O($n$,$\gamma$)${}^{17}$O cross section at astrophysical energies and its role as neutron poison in the $s$ process
• Inhomogeneous enrichment of radioactive nuclei in the Galaxy: Deposition of live Mn-53, Fe-60, Hf-182, and Pu-244 into deep-sea archives. Surfing the wave?
• Measurement of the ${}^{154}$Gd(n,$\gamma$) cross section and its astrophysical implications
• Comprehensive abundance analysis of red giants in the open clusters Stock 2, NGC 2168, 6475, 6991 and 7762
• Enrichment of the Galactic disc with neutron capture elements: Sr
• Galactic Chemical Evolution of Radioactive Isotopes with an s-process Contribution
• What is the Milky Way outer halo made of? High resolution spectroscopy of distant red giants
• Gaia-Sausage-Enceladus star formation history as revealed by detailed elemental abundances
• 3D NLTE modelling of Y and Eu. Centre-to-limb variation and solar abundances
• Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru
• A high-precision abundance analysis of the nuclear benchmark star HD 20
• Underground Measurements of Nuclear Reaction Cross-Sections Relevant to AGB Stars
• HERBS II: Detailed chemical compositions of Galactic bulge stars
• Discovery of s-process enhanced stars in the LAMOST survey
• The Pristine Inner Galaxy Survey (PIGS) VII: a discovery of the first inner Galaxy CEMP-r/s star
• Distribution of s-, r-, and p-process nuclides in the early Solar System inferred from Sr isotope anomalies in meteorites
• The Gaia-ESO survey: placing constraints on the origin of r-process elements
• Detection of Pb II in the Ultraviolet Spectra of Three Metal-Poor Stars
• Exploring the chemodynamics of metal-poor stellar populations
• Observational constraints on the origin of the elements. VI. Origin and evolution of neutron-capture elements as probed by the Gaia-ESO survey
• High Resolution Spectroscopic Abundances of Red Giant Branch Stars in NGC 6681
• Chemical Evolution of R-process Elements in Stars (CERES): IV. An observational run-up of the third r-process peak with Hf, Os, Ir, and Pt
• Time evolution of Ce as traced by APOGEE using giant stars observed with the Kepler, TESS and K2 missions
• Solar System chemical abundances corrected for systematics
• Europium as a lodestar: diagnosis of radiogenic heat production in terrestrial exoplanets
• Chemical analysis of eight giant stars of the globular cluster NGC 6366
• Uncertainties in AGB Evolution and Nucleosynthesis
• Neutron-capture elements in dwarf galaxies III: A homogenized analysis of 13 dwarf spheroidal and ultra-faint galaxies
• Near-infrared chemical abundances of stars in the Sculptor dwarf galaxy
• The Pristine Inner Galaxy Survey (PIGS) IX. The largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy
• The heavy-elements heritage of the falling sky
• r-Process enrichment in the Galactic halo characterized by nucleosynthesis variation in the ejecta of coalescing neutron star binaries
• Chemical Evolution of R-process Elements in Stars (CERES). III. Chemical abundances of neutron capture elements from Ba to Eu
• Barium stars as tracers of s-process nucleosynthesis in AGB stars III. Systematic deviations from the AGB models
• Rotational mixing in carbon-enhanced metal-poor stars with s-process enrichment
• A comparative study of two 47 Tuc giant stars with different s-process enrichment
• Chemical Tagging N-rich Field Stars with High-resolution Spectroscopy
• Measurement of the stellar ${}^{58}$Ni$(n,\gamma {)}^{59}$Ni cross section with AMS
• APOGEE view of the globular cluster NGC 6544
• Traits for chemical evolution in solar twins: Trends of neutron-capture elements with stellar age
• Kilonova evolution -- the rapid emergence of spectral features
• Something borrowed, something blue: The nature of blue metal-poor stars inferred from their colours and chemical abundances
• Exploring the dependence of chemical traits on metallicity: chemical trends for red giant stars with asteroseismic ages
• Thermonuclear 17O(n,gamma)18O reaction rate and its astrophysical implications
• Enrichment of the Galactic disc with neutron-capture elements: Gd, Dy, and Th
• Presolar grains
• High-resolution spectroscopic analysis of four new chemically peculiar stars
• Unlocking the mystery of Sr synthesis in the early Galaxy through analysis of barium isotopes in very metal-poor stars
• The NuGrid AGB Evolution and Nucleosynthesis Data Set
• The s process in massive stars, a benchmark for neutron capture reaction rates
• Studying stellar populations in Omega Centauri with phylogenetics
• Discovery of a pair of very metal-poor stars enriched in neutron-capture elements: The proto-disk r-II star BPS CS 29529-0089 and the Gaia-Sausage-Enceladus r-I star TYC 9219-2422-1
• An Actinide-boost Star Discovered in the Gaia-Sausage-Enceladus
• Abundances of disk and bulge giants from high-resolution optical spectra V. Molybdenum -- the p-process element
• Internal r-process abundance spread of M15 and a single stellar population model
• Modeling the progenitors of low-mass post-accretion binaries
• M giants with IGRINS IV. Identification and characterization of a near-IR line of the s-element Barium
• The first r-process enhanced star confirmed to be a member of the Galactic bulge
• Chemical composition of planetary hosts: II. Abundances of neutron-capture elements
• Full abundance study of two newly discovered barium giants
• An empirical metallicity tracer in CEMP and C-normal stars
• Impact of $\text{T}$- and $\rho$-dependent decay rates and new (n,$\gamma$) cross sections on the $\text{s}$ process in low-mass AGB stars
• iota Horologii is unlikely to be an evaporated Hyades star
• Impact of the latest 22Ne+α reaction rates on nucleosynthesis in massive stars and galactic chemical evolution
• Th/Eu abundance ratio of red giants in the Kepler Field
• Measurements of neutron-induced reactions in inverse kinematics and applications to nuclear astrophysics
• Photo-nuclear reaction rates of ${}^{157,159}$Ho and ${}^{163,165}$Tm and their impact in the $\gamma$--process
• The R-Process Alliance: A Nearly Complete R-Process Abundance Template Derived from Ultraviolet Spectroscopy of the R-Process-Enhanced Metal-Poor Star HD 222925
• A Near-Infrared and Optical Study of NGC 5822: An Open Cluster Hosting Barium-stars and Lithium-Enriched Giant Stars
• Implications of low neutron star merger rates for gamma-ray bursts, r-process production and Galactic double neutron stars
• APOGEE chemical abundances of stars in the MW satellites Fornax, Sextans, Draco and Carina
• Stellar yields and abundances: new directions from planetary nebulae
• An ancient system hidden in the Galactic plane?