Počet záznamů: 1  

Globular Cluster formation in a collapsing supershell

  1. 1.
    0484220 - ASÚ 2018 RIV NL eng J - Článek v odborném periodiku
    Recchi, S. - Wünsch, Richard - Palouš, Jan - Dinnbier, F.
    Globular Cluster formation in a collapsing supershell.
    Astrophysics and Space Science. Roč. 362, č. 10 (2017), 10/12-10/12. ISSN 0004-640X. E-ISSN 1572-946X
    Grant CEP: GA ČR GA15-06012S
    Institucionální podpora: RVO:67985815
    Klíčová slova: dark age * reionization * first stars
    Obor OECD: Astronomy (including astrophysics,space science)
    Impakt faktor: 1.885, rok: 2017

    We simulate, by means of a 1-D Eulerian hydrocode, the early evolution of the primordial cloud after the hypernova explosion, the formation of SSSs, and the following evolution, once the SSSs start to release energy and heavy elements into the interstellar medium. Our results indicate that a shell, enriched with nucleosynthetic products from SSSs, propagates inwards, towards the center of the primordial cloud. In a time span of a few Myr, this inward-propagating shell reaches a distance of only a few parsec away from the center of the primordial cloud. Its density is extremely high and its temperature very low, thus the conditions for a new episode of star formation are achieved. We study what fraction of these two distinct populations of stars can remain bound and survive until the present day. We study also under what conditions can this process repeat and form multiple stellar populations. We extensively discuss whether the proposed scenario can help to explain some open questions of the formation mechanism of globular clusters.
    Trvalý link: http://hdl.handle.net/11104/0279360

     
     
Počet záznamů: 1  

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