dc.contributor.author |
Cunnama, D
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|
dc.contributor.author |
Andrianomena, S
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|
dc.contributor.author |
Cress, CM
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|
dc.contributor.author |
Faltenbacher, A
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|
dc.contributor.author |
Gibson, BK
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|
dc.contributor.author |
Theuns, T
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|
dc.date.accessioned |
2015-08-19T10:55:10Z |
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dc.date.available |
2015-08-19T10:55:10Z |
|
dc.date.issued |
2014-01 |
|
dc.identifier.citation |
Cunnama, D, Andrianomena, S, Cress, C.M, Faltenbacher, A, Gibson, B.K and Theuns, T. 2014. The environmental dependence of neutral hydrogen in the gimic simulations. Monthly Notices of the Royal Astronomical Society, vol. 438, pp 2530-2537 |
en_US |
dc.identifier.issn |
0035-8711 |
|
dc.identifier.uri |
http://arxiv.org/pdf/1312.3133v1.pdf
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|
dc.identifier.uri |
http://hdl.handle.net/10204/8065
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|
dc.description |
Copyright: 2014 Oxford University Press (OUP) |
en_US |
dc.description.abstract |
We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z = 0 to study the distribution and environmental dependence of neutral hydrogen (Hi) gas in the outskirts of simulated galaxies. This gas can currently be probed directly in, for example, Lya absorption via the observation of background quasars. Radio facilities, such as the Square Kilometre Array, will provide a complementary probe of the diffuse Hi in emission and will constrain the physics underpinning the complex interplay between accretion and feedback mechanisms which affect the intergalactic medium. We extract a sample of 488 galaxies from a re-simulation of the average cosmic density GIMIC region. We estimate the neutral hydrogen content of these galaxies and the surrounding intergalactic medium within which they reside. We investigate the average Hi radial profiles by stacking the individual profiles according to both mass and environment. We find high Hi column densities at large impact parameters in group environments and markedly lower Hi densities for non-group galaxies. We suggest that these results likely arise from the combined effects of ram pressure stripping and tidal interactions present in group environments. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Oxford University Press (OUP) |
en_US |
dc.relation.ispartofseries |
Workflow;12674 |
|
dc.subject |
Galaxies-Intergalactic Medium Interaction Calculation |
en_US |
dc.subject |
GIMIC |
en_US |
dc.subject |
Intergalactic medium |
en_US |
dc.subject |
Galaxies |
en_US |
dc.title |
The environmental dependence of neutral hydrogen in the gimic simulations |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Cunnama, D., Andrianomena, S., Cress, C., Faltenbacher, A., Gibson, B., & Theuns, T. (2014). The environmental dependence of neutral hydrogen in the gimic simulations. http://hdl.handle.net/10204/8065 |
en_ZA |
dc.identifier.chicagocitation |
Cunnama, D, S Andrianomena, CM Cress, A Faltenbacher, BK Gibson, and T Theuns "The environmental dependence of neutral hydrogen in the gimic simulations." (2014) http://hdl.handle.net/10204/8065 |
en_ZA |
dc.identifier.vancouvercitation |
Cunnama D, Andrianomena S, Cress C, Faltenbacher A, Gibson B, Theuns T. The environmental dependence of neutral hydrogen in the gimic simulations. 2014; http://hdl.handle.net/10204/8065. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Cunnama, D
AU - Andrianomena, S
AU - Cress, CM
AU - Faltenbacher, A
AU - Gibson, BK
AU - Theuns, T
AB - We use the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) cosmological hydrodynamic simulation at z = 0 to study the distribution and environmental dependence of neutral hydrogen (Hi) gas in the outskirts of simulated galaxies. This gas can currently be probed directly in, for example, Lya absorption via the observation of background quasars. Radio facilities, such as the Square Kilometre Array, will provide a complementary probe of the diffuse Hi in emission and will constrain the physics underpinning the complex interplay between accretion and feedback mechanisms which affect the intergalactic medium. We extract a sample of 488 galaxies from a re-simulation of the average cosmic density GIMIC region. We estimate the neutral hydrogen content of these galaxies and the surrounding intergalactic medium within which they reside. We investigate the average Hi radial profiles by stacking the individual profiles according to both mass and environment. We find high Hi column densities at large impact parameters in group environments and markedly lower Hi densities for non-group galaxies. We suggest that these results likely arise from the combined effects of ram pressure stripping and tidal interactions present in group environments.
DA - 2014-01
DB - ResearchSpace
DP - CSIR
KW - Galaxies-Intergalactic Medium Interaction Calculation
KW - GIMIC
KW - Intergalactic medium
KW - Galaxies
LK - https://researchspace.csir.co.za
PY - 2014
SM - 0035-8711
T1 - The environmental dependence of neutral hydrogen in the gimic simulations
TI - The environmental dependence of neutral hydrogen in the gimic simulations
UR - http://hdl.handle.net/10204/8065
ER -
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en_ZA |