Strong-lensing optical depths in a ΛCDM universe -: II.: The influence of the stellar mass in galaxies

被引：89

作者：

Hilbert, Stefan ^{[1
]}

White, Simon D. M. ^{[1
]}

Hartlap, Jan ^{[2
]}

Schneider, Peter ^{[2
]}

机构：

[1] Max Planck Inst Astrophys, D-85741 Garching, Germany

[2] Argelander Inst Astron, D-53121 Bonn, Germany

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2008年 / 386卷 / 04期

关键词：

gravitational lensing; methods : numerical; galaxies : general; cosmology : theory; dark matter; large-scale structure of Universe;

D O I：

10.1111/j.1365-2966.2008.13190.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate how strong gravitational lensing in the concordance Lambda CDM cosmology is affected by the stellar mass in galaxies. We extend our previous studies, based on ray tracing through the Millennium Simulation, by including the stellar components predicted by galaxy formation models. We find that the inclusion of these components greatly enhances the probability for strong lensing compared to a 'dark matter only' universe. The identification of the 'lenses' associated with strong-lensing events reveals that the stellar mass of galaxies (i) significantly enhances the strong-lensing cross-sections of group and cluster haloes and (ii) gives rise to strong lensing in smaller haloes, which would not produce noticeable effects in the absence of the stars. Even if we consider only image splittings greater than or similar to 10 arcsec, the luminous matter can enhance the strong-lensing optical depths by up to a factor of 2.

引用

页码：1845 / 1854

页数：10

共 82 条

[31] Effects of ellipticity and shear on gravitational lens statistics [J].

Huterer, D ;

Keeton, CR ;

Ma, CP .

ASTROPHYSICAL JOURNAL, 2005, 624 (01) :34-45

[32] The Sloan Digital Sky Survey Quasar Lens Search. II. Statistical lens sample from the third data release [J].

Inada, Naohisa ;

Oguri, Masamune ;

Becker, Robert H. ;

Shin, Min-Su ;

Richards, Gordon T. ;

Hennawi, Joseph F. ;

White, Richard L. ;

Pindor, Bartosz ;

Strauss, Michael A. ;

Kochanek, Christopher S. ;

Johnston, David E. ;

Gregg, Michael D. ;

Kayo, Issha ;

Eisenstein, Daniel ;

Hall, Patrick B. ;

Castander, Francisco J. ;

Clocchiatti, Alejandro ;

Anderson, Scott F. ;

Schneider, Donald P. ;

York, Donald G. ;

Lupton, Robert ;

Chiu, Kuenley ;

Kawano, Yozo ;

Scranton, Ryan ;

Frieman, Joshua A. ;

Keeton, Charles R. ;

Morokuma, Tomoki ;

Rix, Hans-Walter ;

Turner, Edwin L. ;

Burles, Scott ;

Brunner, Robert J. ;

Sheldon, Erin Scott ;

Bahcall, Neta A. ;

Masataka, Fukugita .

ASTRONOMICAL JOURNAL, 2008, 135 (02) :496-511

[33] Ray-tracing simulations of weak lensing by large-scale structure [J].

Jain, B ;

Seljak, U ;

White, S .

ASTROPHYSICAL JOURNAL, 2000, 530 (02) :547-577

[34] The influence of baryons on the clustering of matter and weak-lensing surveys [J].

Jing, YP ;

Zhang, PJ ;

Lin, WP ;

Gao, L ;

Springel, V .

ASTROPHYSICAL JOURNAL, 2006, 640 (02) :L119-L122

[35] Gravitational lensing by spiral galaxies [J].

Keeton, CR ;

Kochanek, CS .

ASTROPHYSICAL JOURNAL, 1998, 495 (01) :157-169

[36]

LEMSON G, 2006, ASTROPH0608019

[37] The giant arc statistics in the three-year Wilkinson Microwave Anisotropy Probe cosmological model [J].

Li, G. L. ;

Mao, S. ;

Jing, Y. P. ;

Mo, H. J. ;

Gao, L. ;

Lin, W. P. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 372 (01) :L73-L77

[38] A search for gravitational lensing in 38 X-ray selected clusters of galaxies [J].

Luppino, GA ;

Gioia, IM ;

Hammer, F ;

LeFèvre, O ;

Annis, JA .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 136 (01) :117-137

[39]

Lynds R., 1986, BAAS, V18, P1014

[40] Inclination effects in spiral galaxy gravitational lensing [J].

Maller, AH ;

Flores, RA ;

Primack, JR .

ASTROPHYSICAL JOURNAL, 1997, 486 (02) :681-686

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