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An analytic resolut...
An analytic resolution to the competition between Lyman-Werner radiation and metal winds in direct collapse black hole hosts
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- Agarwal, Bhaskar (författare)
- Heidelberg Univ, Inst Theoret Phys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany.
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- Regan, John (författare)
- Heidelberg Univ, Inst Theoret Phys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany.;Dublin City Univ, Sch Math Sci, Ctr Astrophys & Relat, Dublin D09 Y5N0, Ireland.
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- Klessen, Ralf S. (författare)
- Heidelberg Univ, Inst Theoret Phys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany.
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- Downes, Turlough P. (författare)
- Dublin City Univ, Sch Math Sci, Ctr Astrophys & Relat, Dublin D09 Y5N0, Ireland.
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- Zackrisson, Erik (författare)
- Uppsala universitet,Institutionen för fysik och astronomi,Uppsala Univ, Dept Phys & Astron, Box 515, SE-75120 Uppsala, Sweden.
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Heidelberg Univ, Inst Theoret Phys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany Heidelberg Univ, Inst Theoret Phys, Zentrum Astron, Albert Ueberle Str 2, D-69120 Heidelberg, Germany.;Dublin City Univ, Sch Math Sci, Ctr Astrophys & Relat, Dublin D09 Y5N0, Ireland. (creator_code:org_t)
- 2017-06-20
- 2017
- Engelska.
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Ingår i: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 470:4, s. 4034-4038
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https://uu.diva-port... (primary) (Raw object)
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A near pristine atomic cooling halo close to a star forming galaxy offers a natural pathway for forming massive direct collapse black hole (DCBH) seeds, which could be the progenitors of the z > 6 redshift quasars. The close proximity of the haloes enables a sufficient Lyman-Werner flux to effectively dissociate H-2 in the core of the atomic cooling halo. A mild background may also be required to delay star formation in the atomic cooling halo, often attributed to distant background galaxies. In this paper, we investigate the impact of metal pollution from both the background galaxies and the close star forming galaxy under extremely unfavourable conditions such as instantaneous metal mixing. We find that within the time window of DCBH formation, the level of pollution never exceeds the critical threshold (Z(cr) similar to 1 x 10(-5) Z(circle dot)) and attains a maximum metallicity of Z similar to 2 x 10(- 6) Z(circle dot). As the system evolves, the metallicity eventually exceeds the critical threshold, long after the DCBH has formed.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- methods: numerical
- dark ages
- reionization
- first stars
- large-scale structure of Universe
- cosmology: theory
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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