The astrophysical environment of the solar birthplace

@article{Williams2010TheAE,
  title={The astrophysical environment of the solar birthplace},
  author={Jonathan P. Williams},
  journal={Contemporary Physics},
  year={2010},
  volume={51},
  pages={381 - 396}
}
Our Sun, like all stars, formed within a cold molecular cloud. Astronomical observations and theory provide considerable detail into this process. Yet cosmochemical observations of short-lived radionuclides in primitive meteorites, in particular 60Fe, provide unequivocal evidence that the early solar system inherited fresh nucleosynthetic material from the core of a hot, massive star, almost certainly ejected in a supernova explosion. I give a short introduction to the fields of star formation… 

The abundance of 26Al-rich planetary systems in the Galaxy

One of the most puzzling properties of the solar system is the high abundance at its birth of 26Al, a short-lived radionuclide with a mean life of 1 Myr. Now decayed, it has left its imprint in

Radioactive nuclei from cosmochronology to habitability

The formation of the solar system

The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for this information are

Evolution and Photoevaporation of Protoplanetary Disks in Clusters: The Role of Pre-stellar Core Properties

We explore the effects of progenitor pre-stellar core properties on the evolution of disks with external photoevaporation in clusters. Since the strength of external photoevaporation is largely

PROTOPLANETARY DISK MASSES IN THE YOUNG NGC 2024 CLUSTER

We present the results from a Submillimeter Array survey of the 887 μm continuum emission from the protoplanetary disks around 95 young stars in the young cluster NGC 2024. Emission was detected from

Searching for possible siblings of the sun from a common cluster based on stellar space velocities

We propose a kinematic approach to searching for the stars that could be formed with the Sun in a common “parent” open cluster. The approach consists in preselecting suitable candidates by the

Cross-sections for planetary systems interacting with passing stars and binaries

Most planetary systems are formed within stellar clusters, and these environments can shape their properties. This paper considers scattering encounters between solar systems and passing cluster

Characterization and chronology of refractory inclusions (CAIs) in the CV3 chondrite NWA 4502

In this thesis I report the petrographic, elemental and isotopic (oxygen, Al-Mg, Rb-Sr and uranium) compositions as well as U-Pb ages of five coarse-grained igneous inclusions (Type A CAIs 1 and 4a,

Possibilities of preparation of exotic radionuclide samples at PSI for scientific investigations

Summary The interactions of high-energy protons with matter produce a large variety of radionuclides due to the diversity of the induced nuclear reactions. Some of those isotopes are very rare,

References

SHOWING 1-10 OF 94 REFERENCES

Radioactive Probes of the Supernova-contaminated Solar Nebula: Evidence that the Sun Was Born in a Cluster

We construct a simple model for radioisotopic enrichment of the protosolar nebula by injection from a nearby supernova, based on the inverse square law for ejecta dispersion. In this parameter study,

The Origin of Short-lived Radionuclides and the Astrophysical Environment of Solar System Formation

Based on early solar system abundances of short-lived radionuclides (SRs), such as 26Al (T1/2 = 0.74 Myr) and 60Fe (T1/2 = 1.5 Myr), it is often asserted that the Sun was born in a large stellar

Interaction of Supernova Ejecta with Nearby Protoplanetary Disks

The early solar system contained short-lived radionuclides such as 60Fe (t1/2 = 1.5 Myr) whose most likely source was a nearby supernova. Previous models of solar system formation considered a

26Al AND THE FORMATION OF THE SOLAR SYSTEM FROM A MOLECULAR CLOUD CONTAMINATED BY WOLF–RAYET WINDS

In agreement with previous work, we show that the presence of the short-lived radionuclide (SLR) 26Al in the early solar system was unlikely (less than 2% a priori probability) to be the result of

Young Circumstellar Disks near Evolved Massive Stars and Supernovae

There is increasing evidence that low-mass stars with circumstellar disks can be born close to massive stars, in some cases within tenths of a parsec. If the disks have lifetimes greater than those

On the Likelihood of Supernova Enrichment of Protoplanetary Disks

We estimate the likelihood of direct injection of supernova ejecta into protoplanetary disks using a model in which the number of stars with disks decreases linearly with time, and clusters expand

Rapid Formation of Molecular Clouds and Stars in the Solar Neighborhood

We show how molecular clouds in the solar neighborhood might be formed and produce stars rapidly enough to explain stellar population ages, building on results from numerical simulations of the

MOLECULAR RINGS AROUND INTERSTELLAR BUBBLES AND THE THICKNESS OF STAR-FORMING CLOUDS

The winds and radiation from massive stars clear out large cavities in the interstellar medium. These bubbles, as they have been called, impact their surrounding molecular clouds and may influence

Understanding our Origins: Star Formation in H II Region Environments

Recent analysis of the decay products of short-lived radiounclides (SLRs) in meteorites, in particular the confirmation of the presence of live 60Fe in the early Solar System, provides unambiguous

On the Role of Massive Stars in the Support and Destruction of Giant Molecular Clouds

We argue that massive stars are the dominant sources of energy for the turbulent motions within giant molecular clouds and that the primary agent of feedback is the expansion of H II regions within
...