On the Number of Stars in the Sun's Birth Cluster

Abstract

The Sun is thought to be formed within a star cluster. The coexistence of ${}^{26}\mathrm{Al}$-rich and ${}^{26}\mathrm{Al}$-poor calcium--aluminum-rich inclusions indicates that a direct injection of ${}^{26}\mathrm{Al}$-rich materials from a nearby core-collapse supernova should occur in the first $10^5$ years of the solar system. Therefore, at least one core-collapse supernova should occur within the duration of star formation in the Sun's birth cluster. Here we revisit the number of stars in the Sun's birth cluster from the point of view of the probability for acquiring at least one core-collapse supernova within the finite duration of star formation in the birth cluster. We find that the number of stars in the birth cluster can be significantly larger than that previously considered, depending on the duration of star formation.

arXiv comment8 pages, 6 figures. Accepted for publication in A&A

References in corpus (42)

• Embedded Clusters in Molecular Clouds
• The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems
• Grids of stellar models with rotation - I. Models from 0.8 to 120 Msun at solar metallicity (Z = 0.014)
• Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars
• Nucleosynthesis Yields of Core-Collapse Supernovae and Hypernovae, and Galactic Chemical Evolution
• Stellar evolution with rotation X: Wolf-Rayet star populations at solar metallicity
• The Birth Environment of the Solar System
• The maximum stellar mass, star-cluster formation and composite stellar populations
• Grids of stellar models with rotation II. WR populations and supernovae/GRB progenitors at Z = 0.014
• Fast and inefficient star formation due to short-lived molecular clouds and rapid feedback
• Discovery of a candidate inner Oort cloud planetoid
• The dynamical evolution of fractal star clusters: the survival of substructure
• Abundance, distribution, and origin of 60Fe in the solar protoplanetary disk
• Scenarios for the Origin of the Orbits of the Trans-Neptunian Objects 2000 CR105 and 2003 VB12
• Constraints on the Birth Aggregate of the Solar System
• Unifying low and high mass star formation through density amplified hubs of filaments
• A perspective from extinct radionuclides on a Young Stellar Object: The Sun and its accretion disk
• Solar system genealogy revealed by extinct short-lived radionuclides in meteorites
• The Edge of the Solar System
• Interaction of Supernova Ejecta with Nearby Protoplanetary Disks
• The Effects of a Stellar Encounter on a Planetesimal Disk
• The lost siblings of the Sun
• Young Circumstellar Disks Near Evolved Massive Stars and Supernovae
• The Supernova Triggered Formation and Enrichment of Our Solar System
• Injection of Radioactivities into the Forming Solar System
• Radiation hydrodynamics simulations of massive star cluster formation in giant molecular clouds
• Simultaneous Triggered Collapse of the Presolar Dense Cloud Core and Injection of Short-Lived Radioisotopes by a Supernova Shock Wave
• The production of short-lived radionuclides by new non-rotating and rotating Wolf-Rayet model stars
• Short-lived radioisotopes in meteorites from Galactic-scale correlated star formation
• Injection of Short-Lived Radionuclides into the Early Solar System from a Faint Supernova with Mixing-Fallback
• Triggered Star Formation Inside the Shell of a Wolf-Rayet Bubble as the origin of the Solar System
• Star cluster formation and cloud dispersal by radiative feedback: dependence on metallicity and compactness
• Low 60Fe abundance in Semarkona and Sahara 99555
• Filament coalescence and hub structure in MonR2: Implications to massive star and cluster formation
• Tracking the distribution of ${}^{26}$Al and ${}^{60}$Fe during the early phases of star and disk evolution
• The Formation of Solar System Analogs in Young Star Clusters
• SIRIUS Project. III. Star-by-star simulations of star cluster formation using a direct N-body integrator with stellar feedback
• A Solar System formation analogue in the Ophiuchus star-forming complex
• Triggered Star Formation and Its Consequences
• The consequences of a nearby supernova on the early Solar System
• The viscous evolution of circumstellar discs in young star clusters
• Assessment of Cr isotopic heterogeneities of volatile-rich asteroids based on multiple planet formation models

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• Oort Cloud Ecology. III. The Sun left the parent star cluster shortly after the giant planets formed
• Limits on Stellar Flybys in the Solar Birth Cluster
• Cosmic-Ray Bath in a Past Supernova Gives Birth to Earth-Like Planets
• Spatial distribution and clustering properties of the young stellar populations in the Carina Nebula complex and Car OB1
• Self-consistent Conditions for ${}^{26}$Al Injection into Protosolar Disk from a Nearby Supernova