RETRACTED: IMF shape constraints from stellar populations and dynamics from CALIFA (Retracted Article)

被引：68

作者：

Lyubenova, M. ^{[1
]}

Martin-Navarro, I. ^{[2
,3
,4
]}

van de Ven, G. ^{[5
]}

Falcon-Barroso, J. ^{[2
,3
]}

Galbany, L. ^{[6
,7
]}

Gallazzi, A. ^{[8
]}

Garcia-Benito, R. ^{[9
]}

Gonzalez Delgado, R. ^{[9
]}

Husemann, B. ^{[10
]}

La Barbera, F. ^{[11
]}

Marino, R. A. ^{[12
]}

Mast, D. ^{[13
,14
]}

Mendez-Abreu, J. ^{[15
]}

Peletier, R. F. P. ^{[1
]}

Sanchez-Blazquez, P. ^{[16
,17
]}

Sanchez, S. F. ^{[18
]}

Trager, S. C. ^{[1
]}

van den Bosch, R. C. E. ^{[5
]}

Vazdekis, A. ^{[2
,3
]}

Walcher, C. J. ^{[19
]}

Zhu, L. ^{[5
]}

Zibetti, S. ^{[8
]}

Ziegler, B. ^{[20
]}

Bland-Hawthorn, J. ^{[21
]}

机构：

[1] Univ Groningen, Kapteyn Astron Inst, Postbus 800, NL-9700 AV Groningen, Netherlands

[2] Inst Astrofis Canarias, Via Lactea S-N, Tenerife, Spain

[3] Univ La Laguna, Dept Astrofis, E-38205 Tenerife, Spain

[4] Univ Calif Observ, 1156 High St, Santa Cruz, CA 95064 USA

[5] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[6] Millennium Inst Astrophys, Santiago, Chile

[7] Univ Chile, Dept Astron, Camino El Observ 1515, Santiago, Chile

[8] INAF Osservatorio Astrofis Arcetri, Largo Enrico Fermi 5, I-50125 Florence, Italy

[9] CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N,Aptdo 3004, E-18080 Granada, Spain

[10] ESO, Karl Schwarzscild Str 2, D-85748 Garching, Germany

[11] INAF Osservatorio Astron Capodimonte, Naples, Italy

[12] ETH, Inst Astron, Wolfgang Pauli Str 27, CH-8093 Zurich, Switzerland

[13] Astron Observ, Laprida 854,X5000BGR, Cordoba, Argentina

[14] Consejo Invest Cient & Tecn Republ Argentina, Avda Rivadavia 1917,C1033AAJ, Caba, Argentina

[15] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[16] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Canto Blanco, Spain

[17] Pontifica Univ Chile, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436, Chile

[18] Univ Nacl Autonoma Mexico, Inst Astron, AP 70-264, Mexico City 04510, DF, Mexico

[19] Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany

[20] Univ Vienna, Turkenschanzstr 17, A-1180 Vienna, Austria

[21] Univ Sydney, Sch Phys A28, Sydney Inst Astron, Sydney, NSW 2006, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 463卷 / 03期

关键词：

galaxies: elliptical and lenticular; cD; galaxies: kinematics and dynamics; galaxies: stellar content; EARLY-TYPE GALAXIES; INITIAL MASS FUNCTION; TO-LIGHT RATIO; MULTI-GAUSSIAN EXPANSION; SAURON PROJECT; DARK-MATTER; SYSTEMATIC VARIATION; FUNDAMENTAL PLANE; SCALING RELATIONS; MODELS;

D O I：

10.1093/mnras/stw2434

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this Paper, we describe how we use stellar dynamics information to constrain the shape of the stellar initial mass function (IMF) in a sample of 27 early-type galaxies from the CALIFA survey. We obtain dynamical and stellar mass-to-light ratios, gamma(dyn) and gamma(*), over a homogenous aperture of 0.5 R-e. We use the constraint gamma(dyn) >= gamma(*) to test two IMF shapes within the framework of the extended MILES stellar population models. We rule out a single power-law IMF shape for 75 per cent of the galaxies in our sample. Conversely, we find that a double power-law IMF shape with a varying high-mass end slope is compatible (within 1 sigma) with 95 per cent of the galaxies. We also show that dynamical and stellar IMF mismatch factors give consistent results for the systematic variation of the IMF in these galaxies.

引用

页码：3220 / 3225

页数：6

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