The Interaction between Galaxies and the Inter-Galactic Medium at redshift 3 in GIMIC Simulations
Abstract
We use GIMIC (Galaxies Intergalactic Medium Interaction Calculation) simulations to study the relationship between star-forming galaxies and the intergalactic medium at z ≈3. We aim to compare our GIMIC data at +1s region with the observations from the VLT LBG Redshift Survey (VLRS) and the data from GIMIC at region 0s. Comparing the results with the observations, the high mass (stellar mass ≥ 0.5 x 109h-1Msun) galaxy correlation function gives a better result than the low mass one (stellar mass ≥ 4.4 x 109 h-1Msun). Our data at +1s region (more dense) show higher clustering than those from 0s region. The simulated galaxy-gas correlation function shows similar neutral gas densities around galaxies to those seen in the observations. The Lyα transmissivity decrease with increasing separations. We fit the Redshift-space distortion model to the results, the peculiar velocities in the simulation overpredict the difference between the real-space and redshift-space galaxy correlation functions at smaller scales. These small measurements of the galaxy–gas velocity dispersion may be indicative of highly coherent motion when the gas and the galaxies move together from real-space to redshift-space. Keywords : high-redshift galaxies, intergalactic mediumReferences
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Springel, V., White, S. D. M., Tormen, G., Kauffmann, G. (2001).Populating a cluster of galaxies - I. Results at [formmu2]z=0. MNRAS, 328, 726.
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Steidel, C. C., Adelberger, K. L., Shapley, A. E., Pettini,M.,Dickinson, M., Giavalisco, M.(2003).Lyman Break Galaxies at Redshift z ~ 3: Survey Description and Full Data Set.ApJ, 592, 728.
Theuns, T., Leonard, A., Efstathiou, G., Pearce, F. R., Thomas, P. A.(1998).P^3M-SPH simulations of the Lyalpha forest.MNRAS, 301, 478.
Theuns, T., Viel, M., Kay, S., Schaye, J., Carswell, R. F., Tzanavaris, P.(2002). Galactic Winds in the Intergalactic Medium.ApJ, 578, L5.
Tummuangpak, P. , Shanks, T., Bielby, R. M., Crighton, N. H. M., Francke, H. ,Infante, L.,. (2014). The VLT LBG Redshift Survey - IV. Gas and galaxies at z ~ 3 in observations and simulations.MNRAS, 442, 2094, 2014.
Wiersma, R. P. C., Schaye, J., Theuns, T., DallaVecchia, C., Tornatore, L. (2009).Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations.MNRAS, 399, 574.
White, S. D. M. and Rees, M. J. (1978). Core condensation in heavy halos - A two-stage theory for galaxy formation and clustering.MNRAS, 183, 341.
White, S. D. M. and Frenk, C. S. (1991).Galaxy formation through hierarchical clustering.ApJ, 379, 52.
Adelberger, K. L., Steidel, C. C., Pettini, M., Shapley, A. E., Reddy, N. A.,Erb, D. K. (2005b). The Spatial Clustering of Star-forming Galaxies at Redshifts 1.4 <~ z <~ 3.5. ApJ, 619, 697.
Bielby R. M. , Shanks, T.,Weilbacher, P.M.,Infante, L.,Crighton, N.H.M., Bornancini, C., . (2011). The VLT LBG Redshift Survey - I. Clustering and dynamics of ≈1000 galaxies at z≈ 3.MNRAS, 414, 2.
Bielby, R., Hill, M.D., Shanks, T.,Crighton, N.H.M.,Infante, L., Bornancini, C. G., .(2013). The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z ~ 3.MNRAS, 430,425.
Bruscoli, M., Ferrara, A., Marri, S., Schneider, R., Maselli, A., Rollinde, E., .(2003).The Lyα forest around high-redshift galaxies.MNRAS, 343, L41.
Crain, R. A.,Theuns, T., DallaVecchia, C.,Eke, V.R.,Frenk, C.S.,Jenkins, A., .(2009).Galaxies-intergalactic medium interaction calculation - I. Galaxy formation as a function of large-scale environment.MNRAS, 399, 1773.
Crighton, N. H. M., Bielby, R., Shanks, T., Infante, L., Bornancini, C. G., Bouch, N.,.(2011). VLT LBG Redshift Survey II: Interactions between galaxies and the IGM at z ~ 3. MNRAS, 414, 28.
Croft, R. A. C., Hernquist, L., Springel, V., Westover, M., White, M. (2002).High-Redshift Galaxies and the Lyα Forest in a Cold Dark Matter Universe.ApJ, 580, 634.
da Angela, J., Shanks, T., Croom, S. M., Weilbacher, P., Brunner, R. J., Couch, W. J.,. (2008). The 2dF-SDSS LRG and QSO survey: QSO clustering and the L-z degeneracy. MNRAS, 383, 565.
Davis, M., Efstathiou, G., Frenk, C. S., White, S. D. M.(1985).The evolution of large-scale structure in a universe
dominated by cold dark matter.ApJ,292, 371.
Davis, M. and Peebles, P. J. E. (1983). A survey of galaxy redshifts. V - The two-point position and velocity correlations.ApJ, 267, 465.
Desjacques, V., Nusser, A., Haehnelt, M. G., Stoehr, F. (2004).Galactic winds and the Lyα forest.MNRAS, 350, 879.
Desjacques, V., Haehnelt, M. G., Nusser, A.(2006). The impact of galactic winds from Lyman-break galaxies on the intergalactic medium.MNRAS, 367, L74.
Dolag, K., Borgani, S., Murante, G., Springel, V. (2009). Substructures in hydrodynamical cluster simulations. MNRAS, 497, 514.
Efron, B. and Stein, C. (1981). The jackknife estimate of variance.The Annals of Statistics, 586–596.
Hamilton, A. J. S.(1992), Measuring omega and the real correlation function from the redshift correlation function. ApJ,385, L5.
Kaiser, N.(1987).Clustering in real space and in redshift space.MNRAS,227, 1.
Kollmeier, J. A., Weinberg, D. H., Dav´e, R., Katz, N.(2003). Lyman Break Galaxies and the Lyα Forest.ApJ,
594, 75.
McDonald, P., Miralda-Escud´e, J., Rauch, M., Sargent, W. L. W., Barlow T. A., Cen R., et al.(2000). The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyα Forest.ApJ, 543, 1.
Mountrichas, G., Sawangwit, U., Shanks, T.(2009).2PIGG group masses via 2dF galaxy z-space distortion.MNRAS, 398, 971.
Rakic, O., Schaye, J., Steidel, C. C., Rudie, G. C. (2012). Neutral Hydrogen Optical Depth near Star-forming Galaxies at z ≈ 2.4 in the Keck Baryonic Structure Survey.ApJ, 751, 94.
Shapley, A. E., Steidel, C. C., Pettini, M., Adelberger K. L.(2003). Rest-Frame Ultraviolet Spectra of z ≈ 3 Lyman
Break Galaxies.ApJ,588,65.
Springel, V., White, S. D. M., Tormen, G., Kauffmann, G. (2001).Populating a cluster of galaxies - I. Results at [formmu2]z=0. MNRAS, 328, 726.
Springel, V., White, S. D. M., Jenkins, A ., Frenk, C. S., Yoshida, N., Gao, L., et al. (2005).Simulations of the formation, evolution and clustering of galaxies and quasars.Nature, 435, 629.
Springel, V. (2005). The cosmological simulation code GADGET-2.MNRAS, 364, 1105.
Steidel, C. C., Adelberger, K. L., Shapley, A. E., Pettini,M.,Dickinson, M., Giavalisco, M.(2003).Lyman Break Galaxies at Redshift z ~ 3: Survey Description and Full Data Set.ApJ, 592, 728.
Theuns, T., Leonard, A., Efstathiou, G., Pearce, F. R., Thomas, P. A.(1998).P^3M-SPH simulations of the Lyalpha forest.MNRAS, 301, 478.
Theuns, T., Viel, M., Kay, S., Schaye, J., Carswell, R. F., Tzanavaris, P.(2002). Galactic Winds in the Intergalactic Medium.ApJ, 578, L5.
Tummuangpak, P. , Shanks, T., Bielby, R. M., Crighton, N. H. M., Francke, H. ,Infante, L.,. (2014). The VLT LBG Redshift Survey - IV. Gas and galaxies at z ~ 3 in observations and simulations.MNRAS, 442, 2094, 2014.
Wiersma, R. P. C., Schaye, J., Theuns, T., DallaVecchia, C., Tornatore, L. (2009).Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations.MNRAS, 399, 574.
White, S. D. M. and Rees, M. J. (1978). Core condensation in heavy halos - A two-stage theory for galaxy formation and clustering.MNRAS, 183, 341.
White, S. D. M. and Frenk, C. S. (1991).Galaxy formation through hierarchical clustering.ApJ, 379, 52.
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2017-09-13
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