Evidence for a Shallow Evolution in the Volume Densities of Massive Galaxies at z=4-8 from CEERS

被引：18

作者：

Chworowsky, Katherine ^{[1
]}

Finkelstein, Steven L. ^{[1
]}

Boylan-Kolchin, Michael ^{[1
]}

Mcgrath, Elizabeth J. ^{[2
]}

Iyer, Kartheik G. ^{[3
]}

Papovich, Casey ^{[4
,5
]}

Dickinson, Mark ^{[6
]}

Taylor, Anthony J. ^{[1
]}

Yung, L. Y. Aaron ^{[7
,8
]}

Arrabal Haro, Pablo ^{[6
]}

Bagley, Micaela B. ^{[1
]}

Backhaus, Bren E. ^{[9
]}

Bhatawdekar, Rachana ^{[10
]}

Cheng, Yingjie ^{[11
]}

Cleri, Nikko J. ^{[4
,5
]}

Cole, Justin W. ^{[4
,5
]}

Cooper, M. C. ^{[12
]}

Costantin, Luca ^{[13
]}

Dekel, Avishai ^{[14
]}

Franco, Maximilien ^{[15
]}

Fujimoto, Seiji ^{[16
,17
]}

Hayward, Christopher C. ^{[18
]}

Holwerda, Benne W. ^{[19
]}

Huertas-Company, Marc ^{[20
,21
,22
]}

Hirschmann, Michaela ^{[23
]}

Hutchison, Taylor A. ^{[7
]}

Koekemoer, Anton M. ^{[8
]}

Larson, Rebecca L. ^{[24
]}

Li, Zhaozhou ^{[14
]}

Long, Arianna S. ^{[15
]}

Lucas, Ray A. ^{[8
]}

Pirzkal, Nor ^{[25
]}

Rodighiero, Giulia ^{[26
,27
]}

Somerville, Rachel S. ^{[18
]}

Vanderhoof, Brittany N. ^{[28
]}

de la Vega, Alexander ^{[28
]}

Wilkins, Stephen M. ^{[29
,30
]}

Yang, Guang ^{[31
,32
]}

Zavala, Jorge A. ^{[33
,34
]}

机构：

[1] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[2] Colby Coll, Dept Phys & Astron, Waterville, ME 04901 USA

[3] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada

[4] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA

[5] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamental, College Stn, TX 77843 USA

[6] NSFs Natl Opt Infrared Astron Res Lab, 950 N Cherry Ave, Tucson, AZ 85719 USA

[7] NASA Goddard Space Flight Ctr, Astrophys Sci Div, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[8] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[9] Univ Connecticut, Dept Phys, Unit 3046, 196 Auditorium Rd, Storrs, CT 06269 USA

[10] European Space Astron Ctr ESAC, European Space Agcy ESA, Camino Bajo Castillo S-N, Villanueva De La Canada, Madrid, Spain

[11] Univ Massachusetts Amherst, 710 North Pleasant St, Amherst, MA 01003 USA

[12] Univ Calif Irvine, Dept Phys & Astron, 4129 Reines Hall, Irvine, CA 92697 USA

[13] CSIC INTA, Ctr Astrobiol CAB, Ctra Ajalvir Km 4, Torrejon De Ardoz 28850, Madrid, Spain

[14] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[15] Univ Texas Austin, Dept Astron, Austin, TX USA

[16] Cosm Dawn Ctr DAWN, Jagtvej 128, Copenhagen, Denmark

[17] Univ Copenhagen, Niels Bohr Inst, Lyngbyvej 2, Copenhagen O, Denmark

[18] Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA

[19] Univ Louisville, Phys & Astron Dept, Louisville, KY 40292 USA

[20] Inst Astrofis Canarias, Tenerife, Spain

[21] Univ La Laguna, Tenerife, Spain

[22] Univ Paris Cite, LERMA Observ Paris, PSL, Paris, France

[23] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lab Galaxy Evolut, Observ Sauverny, CH-1290 Versoix, Switzerland

[24] Rochester Inst Technol, Sch Phys & Astron, 84 Lomb Mem Dr, Rochester, NY 14623 USA

[25] ESA AURA, Space Telescope Sci Inst, Baltimore, MD USA

[26] Univ Padua, Dept Phys & Astron, Vicolo Osservatorio 3, I-35122 Padua, Italy

[27] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[28] Rochester Inst Technol, 84 Lomb Mem Dr, Rochester, NY 14623 USA

[29] Univ Sussex, Astron Ctr, Brighton BN1 9RH, England

[30] Univ Malta, Inst Space Sci & Astron, Msida MSD-2080, Malta

[31] Univ Groningen, Kapteyn Astron Inst, POB 800, NL-9700 AV Groningen, Netherlands

[32] SRON Netherlands Inst Space Res, Postbus 800, NL-9700 AV Groningen, Netherlands

[33] Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan

[34] Flatiron Inst, Ctr Computat Astrophys, 162 5th Ave, New York, NY 10010 USA

来源：

ASTRONOMICAL JOURNAL | 2024年 / 168卷 / 03期

基金：

美国国家科学基金会;

关键词：

SIMILAR-TO; 10; EPOCH SIMULATIONS FLARES; STAR-FORMATION HISTORIES; PROBE WMAP OBSERVATIONS; UV LUMINOSITY FUNCTIONS; STELLAR-MASS; HALO MASS; SEMIANALYTIC FORECASTS; MILLENNIUMTNG PROJECT; QUIESCENT GALAXIES;

D O I：

10.3847/1538-3881/ad57c1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We analyze the evolution of massive (log(10)[M-star/M-circle dot] > 10) galaxies at z similar to 4-8 selected from JWST Cosmic Evolution Early Release Survey (CEERS). We infer the physical properties of all galaxies in the CEERS NIRCam imaging through spectral energy distribution (SED) fitting with dense basis to select a sample of high-redshift massive galaxies. Where available we include constraints from additional CEERS observing modes, including 18 sources with MIRI photometric coverage, and 28 sources with spectroscopic confirmations from NIRSpec or NIRCam WFSS. We sample the recovered posteriors in stellar mass from SED fitting to infer the volume densities of massive galaxies across cosmic time, taking into consideration the potential for sample contamination by active galactic nuclei. We find that the evolving abundance of massive galaxies tracks expectations based on a constant baryon conversion efficiency in dark matter halos for z similar to 4-8. At higher redshifts, we observe an excess abundance of massive galaxies relative to this simple model, resulting in a shallower decline of observed volume densities of massive galaxies. These higher abundances can be explained by modest changes to star formation physics and/or the efficiencies with which star formation occurs in massive dark matter halos, and are not in tension with modern cosmology.

引用

页数：15

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