Dark-ages reionization and galaxy formation simulation XX. The Ly α IGM transmission properties and environment of bright galaxies during the epoch of reionization

被引：28

作者：

Qin, Yuxiang ^{[1
,2
,3
]}

Wyithe, J. Stuart B. ^{[1
,2
]}

Oesch, Pascal A. ^{[4
,5
]}

Illingworth, Garth D. ^{[6
]}

Leonova, Ecaterina ^{[4
]}

Mutch, Simon J. ^{[1
,2
]}

Naidu, Rohan P. ^{[7
]}

机构：

[1] Univ Melbourne, Sch Phys, Parkville, Vic 3010, Australia

[2] ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Parkville, Vic, Australia

[3] Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy

[4] Univ Geneva, Dept Astron, Chemin Pegasi 51, CH-1290 Versoix, Switzerland

[5] Univ Copenhagen, Cosm Dawn Ctr DAWN, Niels Bohr Inst, Jagtvej 128, DK-2200 Copenhagen, Denmark

[6] Univ Calif Santa Cruz, UCO Lick Observ, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[7] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2022年 / 510卷 / 03期

基金：

瑞士国家科学基金会; 欧洲研究理事会; 新加坡国家研究基金会; 澳大利亚研究理事会;

关键词：

cosmology: theory; dark ages; reionization; first stars; diffuse radiation; early Universe; galaxies: high-redshift; intergalactic medium; SIMILAR-TO; 7; EQUIVALENT-WIDTH DISTRIBUTION; TEXAS SPECTROSCOPIC SEARCH; UV LUMINOSITY FUNCTIONS; MEAN FREE-PATH; LYMAN-ALPHA; INTERGALACTIC MEDIUM; COSMIC REIONIZATION; ESCAPE FRACTION; ACCELERATED REIONIZATION;

D O I：

10.1093/mnras/stab3733

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The highly neutral intergalactic medium (IGM) during the epoch of reionization (EoR) is expected to suppress Ly alpha emission with damping-wing absorption, causing nearly no Ly alpha detection from star-forming galaxies at z similar to 8. However, spectroscopic observations of the four brightest galaxies (H-160 similar to 25 mag) at these redshifts do reveal prominent Ly alpha line, suggesting locally ionized IGM. In this paper, we explore the Ly alpha IGM transmission and environment of bright galaxies during the EoR using the Meraxes semi-analytic model. We find brighter galaxies to be less affected by damping-wing absorption as they are effective at ionizing surrounding neutral hydrogen. Specifically, the brightest sources (H-160 less than or similar to 25.5 mag) lie in the largest ionized regions in our simulation, and have low attenuation of their Ly a from the IGM (optical depth <1). Fainter galaxies (25.5 mag < H-160 < 27.5 mag) have transmission that depends on UV luminosity, leading to a lower incidence of Ly alpha detection at fainter magnitudes. This luminosity-dependent attenuation explains why Ly alpha has only been observed in the brightest galaxies at z similar to 8. Follow-up observations have revealed counterparts in the vicinity of these confirmed z similar to 8 Ly alpha emitters. The environments of our modelled analogues agree with these observations in the number of nearby galaxies, which is a good indicator of whether Ly alpha can be detected among fainter galaxies. At the current observational limit, galaxies with >= 2-5 neighbours within 2 arcmin x 2 arcmin are similar to 2-3 times more likely to show Ly alpha emission. JWST will discover an order of magnitude more neighbours, revealing greater than or similar to 50 galaxies in the largest ionizing bubbles and facilitating direct study of reionization morphology.

引用

页码：3858 / 3866

页数：9

共 110 条

[1] Planck 2015 results XIII. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[2] Planck 2018 results: V. CMB power spectra and likelihoods [J].

Aghanim, N. ;

Akrami, Y. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Basak, S. ;

Benabed, K. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Carron, J. ;

Casaponsa, B. ;

Challinor, A. ;

Chiang, H. C. ;

Colombo, L. P. L. ;

Combet, C. ;

Crill, B. P. ;

Cuttaia, F. ;

de Bernardis, P. ;

de Rosa, A. ;

de Zotti, G. ;

Delabrouille, J. ;

Delouis, J. -M. ;

Di Valentino, E. ;

Diego, J. M. ;

Dore, O. ;

Douspis, M. ;

Ducout, A. ;

Dupac, X. ;

Dusini, S. ;

Efstathiou, G. ;

Elsner, F. ;

Ensslin, T. A. ;

Eriksen, H. K. ;

Fantaye, Y. ;

Fernandez-Cobos, R. .

ASTRONOMY & ASTROPHYSICS, 2020, 641

[3] An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5 [J].

Banados, Eduardo ;

Venemans, Bram P. ;

Mazzucchelli, Chiara ;

Farina, Emanuele P. ;

Walter, Fabian ;

Wang, Feige ;

Decarli, Roberto ;

Stern, Daniel ;

Fan, Xiaohui ;

Davies, Frederick B. ;

Hennawi, Joseph F. ;

Simcoe, Robert A. ;

Turner, Monica L. ;

Rix, Hans-Walter ;

Yang, Jinyi ;

Kelson, Daniel D. ;

Rudie, Gwen C. ;

Winters, Jan Martin .

NATURE, 2018, 553 (7689) :473-+

[4] The mean free path of ionizing photons at 5 < z < 6: evidence for rapid evolution near reionization [J].

Becker, George D. ;

D'Aloisio, Anson ;

Christenson, Holly M. ;

Zhu, Yongda ;

Worseck, Gabor ;

Bolton, James S. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 508 (02) :1853-1869

[5] Evidence of patchy hydrogen reionization from an extreme Lyα trough below redshift six [J].

Becker, George D. ;

Bolton, James S. ;

Madau, Piero ;

Pettini, Max ;

Ryan-Weber, Emma V. ;

Venemans, Bram P. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 447 (04) :3402-3419

[6] The Sherwood simulation suite: overview and data comparisons with the Lyman α forest at redshifts 2 ≤ z ≤ 5 [J].

Bolton, James S. ;

Puchwein, Ewald ;

Sijacki, Debora ;

Haehnelt, Martin G. ;

Kim, Tae-Sun ;

Meiksin, Avery ;

Regan, John A. ;

Viel, Matteo .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 464 (01) :897-914

[7] A first direct measurement of the intergalactic medium temperature around a quasar at z=6 [J].

Bolton, James S. ;

Becker, George D. ;

Wyithe, J. Stuart B. ;

Haehnelt, Martin G. ;

Sargent, Wallace L. W. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 406 (01) :612-625

[8] The VVDS type-1 AGN sample:: the faint end of the luminosity function [J].

Bongiorno, A. ;

Zamorani, G. ;

Gavignaud, I. ;

Marano, B. ;

Paltani, S. ;

Mathez, G. ;

Moller, P. ;

Picat, J. P. ;

Cirasuolo, M. ;

Lamareille, F. ;

Bottini, D. ;

Garilli, B. ;

Le Brun, V. ;

Le Fevre, O. ;

Maccagni, D. ;

Scaramella, R. ;

Scodeggio, M. ;

Tresse, L. ;

Vettolani, G. ;

Zanichelli, A. ;

Adami, C. ;

Arnouts, S. ;

Bardelli, S. ;

Bolzonella, M. ;

Cappi, A. ;

Charlot, S. ;

Ciliegi, P. ;

Contini, T. ;

Foucaud, S. ;

Franzetti, P. ;

Guzzo, L. ;

Ilbert, O. ;

Iovino, A. ;

McCracken, H. J. ;

Marinoni, C. ;

Mazure, A. ;

Meneux, B. ;

Merighi, R. ;

Pello, R. ;

Pollo, A. ;

Pozzetti, L. ;

Radovich, M. ;

Zucca, E. ;

Hatziminaoglou, E. ;

Polletta, M. ;

Bondi, M. ;

Brinchmann, J. ;

Cucciati, O. ;

de la Torre, S. ;

Gregorini, L. .

ASTRONOMY & ASTROPHYSICS, 2007, 472 (02) :443-454

[9]

Bosman S, 2020, ALL 5 7 GUAS CURR KN

[10]

Bosman S.E.I., 2021, ARXIV210803699

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