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@ARTICLE{Pfalzner:877893,
      author       = {Pfalzner, Susanne and Vincke, Kirsten},
      title        = {{C}radle(s) of the {S}un},
      journal      = {The astrophysical journal / 1},
      volume       = {897},
      number       = {1},
      issn         = {1538-4357},
      address      = {London},
      publisher    = {Institute of Physics Publ.79394},
      reportid     = {FZJ-2020-02498},
      pages        = {60 -},
      year         = {2020},
      abstract     = {The Sun likely formed as part of a group of stars. A close
                      stellar flyby by one of the solar siblings is probably
                      responsible for the sharp outer edge in the solar system`s
                      mass distribution. The frequency of such close flybys can be
                      used to determine the likely type of birth environment of
                      the solar system. Young stellar groups develop very quickly,
                      expanding significantly within just a few Myr. Here we model
                      this strong dynamical development of young stellar groups
                      and determine the resulting close flyby history. We find
                      that solar system equivalents are predominantly produced in
                      areas with stellar densities in the range 5 $\times$ 10$^4
                      $pc$^{-3}$< n$_{local}$ < 2$ \times$ 10$^5$pc$^{-3}$.
                      Remarkably we find that only two very distinct types of
                      stellar groups can be considered as serious contestants as
                      the cradle of the Sun -- high-mass, extended associations
                      ($M_c >$ 20 000 $M_{sun}$) and intermediate-mass mass,
                      compact clusters ($M_c <$ 3000 $M_{sun}$). Current day
                      counterparts would be the association NGC 2244 and the M44
                      cluster, respectively. In these two types of stellar groups,
                      close flybys take place at a sufficiently high rate, while
                      not being too destructive either. A final decision between
                      these two remaining options will require incorporation of
                      constraints from cosmo-chemical studies.},
      cin          = {JSC},
      ddc          = {520},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511)},
      pid          = {G:(DE-HGF)POF3-511},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000548346100001},
      doi          = {10.3847/1538-4357/ab9533},
      url          = {https://juser.fz-juelich.de/record/877893},
}