CLASH-VLT: The Inner Slope of the MACS J1206.2-0847 Dark Matter Density Profile

被引：10

作者：

Biviano, Andrea ^{[1
,2
]}

Pizzuti, Lorenzo ^{[3
,4
]}

Mercurio, Amata ^{[5
,6
]}

Sartoris, Barbara ^{[1
,7
]}

Rosati, Piero ^{[8
,9
]}

Ettori, Stefano ^{[9
,10
]}

Girardi, Marisa ^{[11
]}

Grillo, Claudio ^{[12
,13
]}

Caminha, Gabriel B. ^{[14
]}

Nonino, Mario ^{[1
]}

机构：

[1] INAF Osservat Astron Trieste, Via GB,Tiepolo 11, I-34131 Trieste, Italy

[2] IFPU Inst Fundamental Phys Universe, Via Beirut 2, I-34014 Trieste, Italy

[3] Czech Acad Sci, CEICO, Inst Phys, Slovance 2, Prague, Czech Republic

[4] Univ Milano Bicocca, Dipartimento Fis G Occhialini, Piazza Sci 3, I-20126 Milan, Italy

[5] Univ Salerno, Dept Phys, Via Giovanni Paolo II, I-84084 Fisciano, SA, Italy

[6] INAF, Astron Observ Capodimonte, Salita Moiariello 16, I-80131 Naples, Italy

[7] Ludwig Maximilians Univ Munchen, Univ Sternwarte Munchen, Fak Phys, Scheinerstr 1, D-81679 Munich, Germany

[8] Univ Ferrara, Dipartimento Fis & Sci Terra, Via Saragat 1, I-44122 Ferrara, Italy

[9] INAF OAS, Osservat Astrofis & Sci Spazio Bologna, Via Gobetti 93-3, Bologna, Italy

[10] INFN, Sez Bologna, Viale Berti Pichat 6-2, I-40127 Bologna, Italy

[11] Univ Trieste, Dipartimento Fis, Via Tiepolo 11, I-34143 Trieste, Italy

[12] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy

[13] INAF IASF Milano, Via A Corti 12, I-20133 Milan, Italy

[14] Tech Univ Munich, Sch Nat Sci, Dept Phys, James Franck Str 1, D-85748 Garching, Germany

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 958卷 / 02期

关键词：

MERGING GALAXY CLUSTER; MASS PROFILES; VELOCITY DISPERSION; SIMULATED CLUSTERS; ACCRETION HISTORY; LARGE-SAMPLE; STELLAR; HALOS; CONSTRAINTS; DYNAMICS;

D O I：

10.3847/1538-4357/acf832

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The inner slope (gamma DM) of the dark matter (DM) density profile of cosmological halos carries information about the properties of DM and/or baryonic processes affecting the halo gravitational potential. Cold DM cosmological simulations predict steep inner slopes, gamma DM similar or equal to 1. We test this prediction on the MACS J1206.2-0847 cluster at redshift z = 0.44, whose DM density profile has been claimed to be cored at the center. We determine the cluster DM density profile from 2 kpc from the cluster center to the virial radius (similar to 2 Mpc), using the velocity distribution of similar or equal to 500 cluster galaxies and the internal velocity dispersion profile of the Brightest Cluster Galaxy (BCG), obtained from VIMOS@VLT and MUSE@VLT data. We solve the Jeans equation of dynamical equilibrium using an upgraded version of the MAMPOSSt method. The total mass profile is modeled as a sum of a generalized Navarro-Frenk-White profile that describes the DM component, allowing for a free inner slope of the density profile, a Jaffe profile that describes the BCG stellar mass component, and a nonparametric baryonic profile that describes the sum of the remaining galaxy stellar mass and of the hot intra-cluster gas mass. Our total mass profile is in remarkable agreement with independent determinations based on X-ray observations and strong lensing. We find gamma DM=0.7-0.1+0.2 (68% confidence levels), consistent with predictions from recent Lambda cold dark matter cosmological numerical simulations.

引用

页数：12

共 102 条

[1] Mass Profile Decomposition of the Frontier Fields Cluster MACs J0416-2403: Insights on the Dark-matter Inner Profile [J].

Annunziatella, M. ;

Bonamigo, M. ;

Grillo, C. ;

Mercurio, A. ;

Rosati, P. ;

Caminha, G. ;

Biviano, A. ;

Girardi, M. ;

Gobat, R. ;

Lombardi, M. ;

Munari, E. .

ASTROPHYSICAL JOURNAL, 2017, 851 (02)

[2] CLASH-VLT: The stellar mass function and stellar mass density profile of the z=0.44 cluster of galaxies MACS J1206.2-0847 [J].

Annunziatella, M. ;

Biviano, A. ;

Mercurio, A. ;

Nonino, M. ;

Rosati, P. ;

Balestra, I. ;

Presotto, V. ;

Girardi, M. ;

Gobat, R. ;

Grillo, C. ;

Kelson, D. ;

Medezinski, E. ;

Postman, M. ;

Scodeggio, M. ;

Brescia, M. ;

Demarco, R. ;

Fritz, A. ;

Koekemoer, A. ;

Lemze, D. ;

Lombardi, M. ;

Sartoris, B. ;

Umetsu, K. ;

Vanzella, E. ;

Bradley, L. ;

Coe, D. ;

Donahue, M. ;

Infante, L. ;

Kuchner, U. ;

Maier, C. ;

Regos, E. ;

Verdugo, M. ;

Ziegler, B. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[3] Chandra observations of the lensing cluster EMSS 1358+6245:: Implications for self-interacting dark matter [J].

Arabadjis, JS ;

Bautz, MW ;

Garmire, GP .

ASTROPHYSICAL JOURNAL, 2002, 572 (01) :66-78

[4] DETECTING BIMODALITY IN ASTRONOMICAL DATASETS [J].

ASHMAN, KM ;

BIRD, CM ;

ZEPF, SE .

ASTRONOMICAL JOURNAL, 1994, 108 (06) :2348-2361

[5] The Chemical Composition of the Sun [J].

Asplund, Martin ;

Grevesse, Nicolas ;

Sauval, A. Jacques ;

Scott, Pat .

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 47, 2009, 47 :481-522

[6] CLASH-VLT: DISSECTING THE FRONTIER FIELDS GALAXY CLUSTER MACS J0416.1-2403 WITH ∼800 SPECTRA OF MEMBER GALAXIES [J].

Balestra, I. ;

Mercurio, A. ;

Sartoris, B. ;

Girardi, M. ;

Grillo, C. ;

Nonino, M. ;

Rosati, P. ;

Biviano, A. ;

Ettori, S. ;

Forman, W. ;

Jones, C. ;

Koekemoer, A. ;

Medezinski, E. ;

Merten, J. ;

Ogrean, G. A. ;

Tozzi, P. ;

Umetsu, K. ;

Vanzella, E. ;

van Weeren, R. J. ;

Zitrin, A. ;

Annunziatella, M. ;

Caminha, G. B. ;

Broadhurst, T. ;

Coe, D. ;

Donahue, M. ;

Fritz, A. ;

Frye, B. ;

Kelson, D. ;

Lombardi, M. ;

Maier, C. ;

Meneghetti, M. ;

Monna, A. ;

Postman, M. ;

Scodeggio, M. ;

Seitz, S. ;

Ziegler, B. .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2016, 224 (02)

[7] The Cluster-EAGLE project: global properties of simulated clusters with resolved galaxies [J].

Barnes, David J. ;

Kay, Scott T. ;

Bahe, Yannick M. ;

Dalla Vecchia, Claudio ;

McCarthy, Ian G. ;

Schaye, Joop ;

Bower, Richard G. ;

Jenkins, Adrian ;

Thomas, Peter A. ;

Schaller, Matthieu ;

Crain, Robert A. ;

Theuns, Tom ;

White, Simon D. M. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 471 (01) :1088-1106

[8]

Bartelmann M, 1996, ASTRON ASTROPHYS, V313, P697

[9] Enhanced cluster lensing models with measured galaxy kinematics [J].

Bergamini, P. ;

Rosati, P. ;

Mercurio, A. ;

Grillo, C. ;

Caminha, G. B. ;

Meneghetti, M. ;

Agnello, A. ;

Biviano, A. ;

Calura, F. ;

Giocoli, C. ;

Lombardi, M. ;

Rodighiero, G. ;

Vanzella, E. .

ASTRONOMY & ASTROPHYSICS, 2019, 631

[10] The radial profiles of the different mass components in galaxy clusters [J].

Biviano, A ;

Salucci, P .

ASTRONOMY & ASTROPHYSICS, 2006, 452 (01) :75-81

← 1 2 3 4 5 6 7 8 9 10 →