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Survival of Population III stars

Published online by Cambridge University Press:  07 April 2020

Jayanta Dutta ,
Sharanya Sur ,
Athena Stacy  and
Jasjeet Singh Bagla
Jayanta Dutta
Affiliation:
Department of Physical Sciences, IISER, Mohali, 140306, India Department of Physics, University of Évora, 7002-554 Évora, Portugal
Sharanya Sur
Affiliation:
Indian Institute of Astrophysics, 2nd Block, Koramangala, Bangalore560034, India
Athena Stacy
Affiliation:
University of California, Berkeley, CA94720, [email protected]
Jasjeet Singh Bagla
Affiliation:
Department of Physical Sciences, IISER, Mohali, 140306, India
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Abstract

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In our earlier studyDutta (2016a), it has been shown that a number of primordial protostars (the ‘first stars’ in the Universe, also known as Population III or Pop III stars) are being ejected from the cluster of their origin with the velocity exceeding their escape velocity. Hence there is possibility that some of these protostars can enter main sequence and survive till present epoch, even in Milky Way. We ask the question if the protostars can avoid core collapse, and stop accreting before being ejected from the cluster, with the final mass of stars as 0.8 Mȯ.

Keywords

stars: Pop IIIaccretionhydrodynamicsinstabilitiesmethods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S342: Perseus in Sicily: From Black Hole to Cluster Outskirts , May 2018 , pp. 266 - 267
Copyright
© International Astronomical Union 2020

References

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