scholarly journals Triggered Star Formation inside the Shell of a Wolf-Rayet Bubble as the Origin of the Solar System

2018 ◽  
Vol 14 (S345) ◽  
pp. 78-82
Author(s):  
Vikram V. Dwarkadas ◽  
Nicolas Dauphas ◽  
Bradley Meyer ◽  
Peter Boyajian ◽  
Michael Bojazi
Keyword(s):  
Star Formation ◽  
Solar System ◽  
Numerical Simulations ◽  
Abundance Ratio ◽  
Early Solar System ◽  
Solar System Formation ◽  
System Formation ◽  
Viable Model

AbstractA constraint on Solar System formation is the high 26Al/27Al abundance ratio, 17 times higher than the average Galactic ratio, while the 60Fe/56Fe value was lower than the Galactic value. This challenges the assumption that a nearby supernova was responsible for the injection of these short-lived radionuclides into the early Solar System. We suggest that the Solar System was formed by triggered star formation at the edge of a Wolf-Rayet (W-R) bubble. We discuss the details of various processes within the model using numerical simulations, and analytic and semi-analytic calculations, and conclude that it is a viable model that can explain the initial abundances of 26Al and 60Fe. We estimate that 1%-16% of all Sun-like stars could have formed in such a setting.

scholarly journals A LOWER INITIAL ABUNDANCE OF SHORT-LIVED41Ca IN THE EARLY SOLAR SYSTEM AND ITS IMPLICATIONS FOR SOLAR SYSTEM FORMATION

2012 ◽  
Vol 761 (2) ◽  
pp. 137 ◽  
Author(s):  
Ming-Chang Liu ◽  
Marc Chaussidon ◽  
Gopalan Srinivasan ◽  
Kevin D. McKeegan
Keyword(s):  
Solar System ◽  
Early Solar System ◽  
Solar System Formation ◽  
System Formation

scholarly journals Formation of brown dwarfs and planets

2010 ◽  
Vol 6 (S276) ◽  
pp. 105-112
Author(s):  
Åke Nordlund
Keyword(s):  
Star Formation ◽  
Solar System ◽  
Numerical Simulations ◽  
Planet Formation ◽  
Brown Dwarfs ◽  
Formation Mechanisms ◽  
Early Solar System ◽  
New Evidence

AbstractBrown dwarfs and massive planets have similar structures, and there is probably an overlap in mass between the most massive planets and the lowest mass brown dwarfs. This raises questions as to what extent the structures of the most massive planets and lowest mass brown dwarfs differ, and what similarities (or not) there might be between their formation mechanisms. Here I discuss these issues on the background of recent numerical simulations of star formation, new evidence from cosmochemistry about the conditions in the early solar system, and recently discovered mechanisms that can expedite planetesimal and possibly planet formation greatly.

scholarly journals Astronomical context of Solar System formation from molybdenum isotopes in meteorite inclusions

Science ◽  
2020 ◽  
Vol 370 (6518) ◽  
pp. 837-840
Author(s):  
Gregory A. Brennecka ◽  
Christoph Burkhardt ◽  
Gerrit Budde ◽  
Thomas S. Kruijer ◽  
Francis Nimmo ◽  
...  
Keyword(s):  
Star Formation ◽  
Solar System ◽  
Time Scale ◽  
Main Sequence ◽  
The Sun ◽  
Solar System Formation ◽  
Astronomical Observations ◽  
System Formation ◽  
T Tauri ◽  
Molybdenum Isotopes

Calcium-aluminum–rich inclusions (CAIs) in meteorites are the first solids to have formed in the Solar System, defining the epoch of its birth on an absolute time scale. This provides a link between astronomical observations of star formation and cosmochemical studies of Solar System formation. We show that the distinct molybdenum isotopic compositions of CAIs cover almost the entire compositional range of material that formed in the protoplanetary disk. We propose that CAIs formed while the Sun was in transition from the protostellar to pre–main sequence (T Tauri) phase of star formation, placing Solar System formation within an astronomical context. Our results imply that the bulk of the material that formed the Sun and Solar System accreted within the CAI-forming epoch, which lasted less than 200,000 years.

scholarly journals New Results on the Composition of the Outer Planets and Titan

2005 ◽  
Vol 13 ◽  
pp. 891-893
Author(s):  
Thierry Fouchet
Keyword(s):  
Solar System ◽  
Atmospheric Chemistry ◽  
Recent Progress ◽  
Giant Planets ◽  
Atmospheric Composition ◽  
Solar System Formation ◽  
Outer Planets ◽  
System Formation ◽  
The Impact

AbstractIn this brief summary, I present recent progress on our knowledge of the Giant Planets and Titan atmospheric composition, as well as the impact of this progress on our understanding of Solar System formation, and atmospheric chemistry.

Solar System Formation and Early Evolution: the First 100 Million Years

2007 ◽  
pp. 39-95 ◽  
Author(s):  
Thierry Montmerle ◽  
Jean-Charles Augereau ◽  
Marc Chaussidon ◽  
Matthieu Gounelle ◽  
Bernard Marty ◽  
...  
Keyword(s):  
Solar System ◽  
Early Evolution ◽  
Solar System Formation ◽  
System Formation
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