Descendants of the first stars: the distinct chemical signature of second generation stars

Abstract

Extremely metal-poor (EMP) stars in the Milky Way (MW) allow us to infer the properties of their progenitors by comparing their chemical composition to the metal yields of the first supernovae. This method is most powerful when applied to mono-enriched stars, i.e. stars that formed from gas that was enriched by only one previous supernova. We present a novel diagnostic to identify this subclass of EMP stars. We model the first generations of star formation semi-analytically, based on dark matter halo merger trees that yield MW-like halos at the present day. Radiative and chemical feedback are included self-consistently and we trace all elements up to zinc. Mono-enriched stars account for only $\sim 1\%$ of second generation stars in our fiducial model and we provide an analytical formula for this probability. We also present a novel analytical diagnostic to identify mono-enriched stars, based on the metal yields of the first supernovae. This new diagnostic allows us to derive our main results independently from the specific assumptions made regarding Pop III star formation, and we apply it to a set of observed EMP stars to demonstrate its strengths and limitations. Our results may provide selection criteria for current and future surveys and therefore contribute to a deeper understanding of EMP stars and their progenitors.

18 pages, 20 figures, published in MNRAS

References in corpus (37)

• The GALAH Survey: Scientific Motivation
• Carbon Enhanced Metal-Poor Stars. I. Chemical Compositions of 26 Stars
• The Star Formation Histories of Local Group Dwarf Galaxies I. Hubble Space Telescope / Wide Field Planetary Camera 2 Observations
• A Search for Stars of Very Low Metal Abundance. VI. Detailed Abundances of 313 Metal-Poor Stars
• The Formation of Population III Binaries from Cosmological Initial Conditions
• Carbon-Enhanced Metal-Poor Star Frequencies in the Galaxy: Corrections for the Effect of Evolutionary Status on Carbon Abundances
• The Mass Spectrum of the First Stars
• Resolving the Formation of Protogalaxies. III. Feedback from the First Stars
• Fluctuations in the High-Redshift Lyman-Werner Background: Close Halo Pairs as the Origin of Supermassive Black Holes
• Population III star formation in a Lambda CDM universe, II: Effects of a photodissociating background
• The Destruction of Cosmological Minihalos by Primordial Supernovae
• TOPoS: II. On the bimodality of carbon abundance in CEMP stars. Implications on the early chemical evolution of galaxies
• Two populations of metal-free stars in the early Universe
• HE 1327-2326, an unevolved star with [Fe/H]<-5.0. II. New 3D-1D corrected abundances from a VLT/UVES spectrum
• Ultra faint dwarfs: probing early cosmic star formation
• Supersonic Gas Streams Enhance the Formation of Massive Black Holes in the Early Universe
• Uncovering the Chemical Signature of the First Stars in the Universe
• Constraining the primordial initial mass function with stellar archaeology
• Limits on Pop III star formation with the most iron-poor stars
• The formation of direct collapse black holes under the influence of streaming velocities
• Carbon-Enhanced Metal-Poor Stars: Relics from the Dark Ages
• Recovery from population III supernova explosions and the onset of second generation star formation
• The oldest and most metal poor stars in the APOSTLE Local Group simulations
• The first stars: CEMP--no stars and signatures of spinstars
• Faint Population III supernovae as the origin of the most iron-poor stars
• The first carbon-enhanced metal-poor star found in the Sculptor dwarf spheroidal
• The minimum stellar metallicity observable in the Galaxy
• Chemical Abundance Analysis of the Extremely Metal-Poor Star HE 1300+0157
• Metal-poor star formation triggered by the feedback effects from Pop III stars
• Predicting the locations of possible long-lived low-mass first stars: Importance of satellite dwarf galaxies
• Observational Constraints on First-Star Nucleosynthesis. II. Spectroscopy of an Ultra Metal-Poor CEMP-no Star
• Contribution of Neutron Star Mergers to the R-process Chemical Evolution in the Hierarchical Galaxy Formation
• Following the Cosmic Evolution of Pristine Gas II: The search for Pop III-Bright Galaxies
• Following The Cosmic Evolution Of Pristine Gas I: Implications For Milky Way Halo Stars
• TOPoS: III. An ultra iron-poor multiple CEMP system
• Blocking metal accretion onto population III stars by stellar wind
• Evolution of the First Supernovae in Protogalaxies: Dynamics of Mixing of Heavy Elements

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• Transition of the initial mass function in the metal-poor environments
• The Southern Stellar Stream Spectroscopic Survey (S5): Chemical Abundances of Seven Stellar Streams
• JWST-JADES. Possible Population III signatures at z=10.6 in the halo of GN-z11
• Binarity among CEMP-no stars: an indication of multiple formation pathways?
• The critical dark matter halo mass for Population III star formation: dependence on Lyman-Werner radiation, baryon-dark matter streaming velocity, and redshift
• Evidence for an aspherical Population III supernova explosion inferred from the hyper metal-poor star HE1327-2326
• An extremely metal poor star complex in the reionization era: Approaching Population III stars with JWST
• Galactic Archeology with the AEGIS Survey: The Evolution of Carbon and Iron in the Galactic Halo
• Impact of the cosmic background radiation on the initial mass function of metal-poor stars
• Seeding the Second Star: enrichment from population III, dust evolution, and cloud collapse
• Abundances and kinematics of carbon-enhanced metal-poor stars in the Galactic halo*; A new classification scheme based on Sr and Ba
• Probing the existence of very massive first stars
• Self-consistent Semi-analytic Modeling of Feedback During Primordial Star Formation and Reionization
• Pristine IX: CFHT ESPaDOnS Spectroscopic Analysis of 115 Bright Metal-Poor Candidate Stars
• Public Release of A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
• Back to the Lithium Plateau with J0023+0307 with [Fe/H]<-6
• Grids of stellar models with rotation: V. Models from 1.7 to 120 Msun at zero metallicity
• A metal-poor damped Ly-alpha system at redshift 6.4
• Magnetic field amplification in accretion discs around the first stars: implications for the primordial IMF
• A needle in a haystack? Catching Pop III stars in the Epoch of Reionization: I. Pop III star forming environments
• Spectroscopic Validation of Low-Metallicity Stars from RAVE
• SPLUSJ210428.01-004934.2: An Ultra Metal-Poor Star Identified from Narrowband Photometry
• The Pristine survey -- XII: Gemini-GRACES chemo-dynamical study of newly discovered extremely metal-poor stars in the Galaxy
• Origin of the CEMP-no Group Morphology in the Milky Way
• The R-Process Alliance: The Peculiar Chemical Abundance Pattern of RAVE J183013.5-455510
• The Cosmic Hunt for Members in the Outskirts of Ultra Faint Dwarf Galaxies: Ursa Major I, Coma Berenices, and Boötes I
• Stability analysis of supermassive primordial stars: a new mass range for general relativistic instability supernovae
• The R-Process Alliance: Spectroscopic Follow-up of Low-Metallicity Star Candidates from the Best & Brightest Survey
• Following the Cosmic Evolution of Pristine Gas III: The Observational Consequences of the Unknown Properties of Population III Stars
• Fingerprint of the first stars: multi-enriched extremely metal-poor stars in the TOPoS survey
• Detailed chemical abundances of stars in the outskirts of the Tucana II ultra-faint dwarf galaxy
• Implications of inhomogeneous metal mixing for stellar archaeology
• Tracing Pop III supernovae with extreme energies through the Sculptor dwarf spheroidal galaxy
• Formation of carbon-enhanced metal-poor stars as a consequence of inhomogeneous metal mixing
• Metal Mixing in Minihalos: The Descendants of Pair-Instability Supernovae
• Machine learning detects multiplicity of the first stars in stellar archaeology data
• Simulating Metal Mixing of Both Common and Rare Enrichment Sources in a Low Mass Dwarf Galaxy
• Targeting Bright Metal-poor Stars in the Disk and Halo Systems of the Galaxy
• Mono-enriched stars and Galactic chemical evolution -- Possible biases in observations and theory
• Evidence of First Stars-enriched Gas in High-redshift Absorbers
• The energy distribution of the first supernovae
• Gravitational waves from the remnants of the first stars in nuclear star clusters
• Seeding the second star -- II. CEMP star formation enriched from faint supernovae
• Detecting strongly lensed supernovae at z ~ 5-7 with LSST
• Potential signature of Population III pair-instability supernova ejecta in the BLR gas of the most distant quasar at z = 7.54
• Metal-Poor Stars Observed with the Southern African Large Telescope
• A-SLOTH reveals the nature of the first stars
• Understanding the origin of CEMP-no stars through ultra-faint dwarfs
• Tracing stars in Milky Way satellites with A-SLOTH
• Origin of metals in old Milky Way halo stars based on GALAH and Gaia
• True Pair-instability Supernova Descendant: Implications for the First Stars' Mass Distribution
• The Metallicity Gradient and Complex Formation History of the Outermost Halo of the Milky Way
• The extreme CNO-enhanced composition of the primitive iron-poor dwarf star J0815+4729
• Raising the observed metallicity floor with a 3D non-LTE analysis of SDSS J102915.14+172927.9
• A-SLOTH: Ancient Stars and Local Observables by Tracing Halos
• A hide-and-seek game: Looking for Population III stars during the Epoch of Reionization through the HeII$\lambda$1640 line
• The stochastic enrichment of Population II stars
• Chemical Diagnostics to Unveil Environments Enriched by First Stars
• Search for Extremely Metal-Poor Stars with GEMINI-N/GRACES I. Chemical-Abundance Analysis
• 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
• Chemical analysis of two extremely metal-poor stars HE 2148-2039 and HE 2155-2043
• The earliest phases of CNO enrichment in galaxies
• Spectroscopic study of four metal-poor carbon stars from the Hamburg/ESO Survey: On confirming the low-mass nature of their companions
• A Global Semi-Analytic Model of the First Stars and Galaxies Including Dark Matter Halo Merger Histories
• Chemodynamical study of two CEMP-no stars from the Hamburg/ESO Survey
• The S-PLUS Ultra-Short Survey: first data release
• Where are the extremely metal-poor stars in the Milky Way and Andromeda? Expectations from TNG50
• Hydrodynamics and Nucleosynthesis of Jet-Driven Supernovae II: Comparisons with Abundances of Extremely Metal-Poor Galaxies and Constraints on Supernova Progenitors
• Applications of Stellar Population Synthesis in the Distant Universe
• The chemical imprint of the bursty nature of Milky Way's progenitors
• Measuring Dwarf Galaxy Intrinsic Abundance Scatter with Mid-resolution Spectroscopic Surveys: Calibrating APOGEE Abundance Errors
• Does the structure of Pop III supernova ejecta affect the elemental abundance of extremely metal-poor stars?
• Accurate Metallicities for Very Metal-Poor Stars from the Ca~II Infrared Triplet
• A Modified Initial Mass Function of the First Stars with Explodability Theory under Different Enrichment Scenarios
• 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
• Abundance Pattern Fitting with Bayesian Inference: Constraining First Stars' Properties and Their Explosion Mechanism with Extremely Metal-poor Stars
• A survey of extremely metal-poor gas at cosmic noon: evidence of elevated [O/Fe]
• Disc fragmentation and oligarchic growth of protostellar systems in low-metallicity gas clouds
• M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars
• A second-generation star in a relic dwarf galaxy
• An empirical metallicity tracer in CEMP and C-normal stars
• Aeos: The Impact of Population III Initial Mass Function and Star-by-Star Models in Galaxy Simulations
• HE0144-4657: A Carbon-Enhanced Ultra Metal-Poor Star ([Fe/H] ~ -4.1) from the Helmi Stream Disrupted Dwarf Galaxy
• On the Chemical Composition of the Evolved Very Bright Metal-Poor Star HD 1936
• From Dark Matter Minihalos to Large-Scale Radiative Feedback: A Self-Consistent 3D Simulation of the First Stars and Galaxies using Neural Networks