Are supernovae sources of presolar grains?

  title={Are supernovae sources of presolar grains?},
  author={Sydney W. Falk and James M. Lattimer and Steven H. Margolis},
ISOTOPIC measurements1 in chondritic meteorites have revealed that live 26Al was present in the early solar system. 26Al and other reported isotopic peculiarities2–4 in the meteorite Allende could be attributable to explosive nucleosynthesis, sparking suggestions1–8 that a nearby supernova may have contaminated the early solar nebula. One explanation for isotopic anomalies in early nebular condensates is the injection of supernova grains. An advantage of this mechanism is that it could avoid… 
13 Citations
Isotopic anomalies in meteorites
The classical picture of the pre-solar nebula is that of a hot, well-mixed cloud of chemically and isotopically uniform composition. Recent measurements have shown this conception to be erroneous,
Chemical condensation sequences in supernova ejecta
The mineralogical composition of grains produced in supernova ejecta is explored via chemical equilibrium condensation computations. These calculations are carried out for chemical compositions
Grain motions in the solar nebula
Isotopic analyses of meteorites suggest the possibility that some interaction between supernova ejecta and grains occurred in the solar nebula. In particular, the dynamics of grain motions in the
New isotopic clues to solar system formation
The presence of two new extinct nuclides 26Al and 107Pd with half-lives ∼106 years in the early solar system implies that there were nucleosynthetic activities involving a great many elements almost
Sudden grain nucleation and growth in supernova and nova ejecta
The thermal conditions leading to the rapid nucleation and growth of dust in astronomical explosions are examined. The contribution herein to nucleation physics lies only in the clarification of the
Grain carriers of isotopic anomalies
The dynamics of grain motion through gas are examined in terms of the injection of isotopically anomalous (compared to solar abundances) material into the early solar nebula. Calculations indicate
Windows to early solar system processes: Refractory inclusions in the CV and CM chondrites
The refractory element-enriched inclusions found in the carbonaceous meteorites give cosmochemists a fascinating glimpse at processes which occurred near the birth of the solar system. Although many
On the problem of Solar System origin: The regularities of noble gas fractionation in shock waves
The effects of the last supernova explosion before the formation of the Solar System are considered using noble gases as examples. Acceleration of generated supernova matter in the explosive shock
Spallation reactions in shock waves at supernova explosions and related problems
The isotopic anomalies of some extinct radionuclides testify to the outburst of a nearby supernova just before the collapse of the protosolar nebula, and to the fact that the supernova was Sn Ia,


Behavior of grains in early supernova environments
The efficiency of grain destruction by collisional and radiative heating and sputtering in a supernova environment is examined. It is found that radiative heating rapidly destroys any grains composed
22Na, Ne–E, extinct radioactive anomalies and unsupported 40Ar
A NEW picture1 of the origin of the known extinct radioactivities (129I and 244Pu) holds that these radioactive species were precipitated in grains forming in the rapidly cooling ejecta of explosive
Dust in Supernova Explosions
The relative abundances of elements produced in both processes are similar to the observed solar values, which supports the view that supernova explosions are a major source of enrichment of the interstellar medium in heavy elements.
On possible short-lived progenitors of fission xenon in carbonaceous chondrites
We suggest that the unidentified fission xenon component in carbonaceous chondrites may be attributable to the decay of the extinct radioactivities250Cm and, to a lesser extent,258Cm. Two assumptions
Grains of anomalous isotopic composition from novae
We study the effects of grain formation in nova ejecta with double purpose: (1) to schematically model the optical and infrared luminosities, (2) to identify the anomalies of isotopic composition
Xenon record of the early Solar System
We suggest that xenon isotopes in meteorites and in outer regions of the Sun contain debris from a supernova which exploded in the vicinity of the present Solar System, and we conclude that xenon in
Elements 112 to 119: Were They Present in Meteorites?
Chondrites contain a small fission xenon component of unexplained origin that suggests that it was not derived from an actinide element, or from a transition metal between Z = 104 and 111, but from a more volatile progenitor.