Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey

Ran Li; Huanyuan Shan; Jean Paul Kneib; Houjun Mo; Eduardo Rozo; Alexie Leauthaud; John Moustakas; Lizhi Xie; Thomas Erben; Ludovic Van Waerbeke; Martin Makler; Eli Rykoff; Bruno Moraes

doi:10.1093/mnras/stw494

Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey

Ran Li
, Huanyuan Shan
, Jean Paul Kneib
, Houjun Mo
, Eduardo Rozo
, Alexie Leauthaud
, John Moustakas
, Lizhi Xie
, Thomas Erben
, Ludovic Van Waerbeke
, Martin Makler
, Eli Rykoff
, Bruno Moraes

Physics

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

We use the shear catalogue from the CFHT Stripe-82 Survey to measure the subhalo masses of satellite galaxies in redMaPPer clusters. Assuming a Chabrier initial mass function and a truncated NFW model for the subhalo mass distribution, we find that the subhalo mass to galaxy stellar mass ratio increases as a function of projected halo-centric radius r_p, from M_sub/M_star = 4.43_-2.23^+6.63 at r_p ∈ [0.1, 0.3] h^-1 Mpc to M_sub/M_star= 75.40_-19.09^+19.73 at r_p ∈ [0.6, 0.9] h^-1 Mpc. We also investigate the dependence of subhalo masses on stellar mass by splitting satellite galaxies into two stellar mass bins: 10 < log (M_star/h^-1 M_⊙) < 10.5 and 11 < log (M_star/h^-1 M_⊙) < 12. The best-fitting subhalo mass of the more massive satellite galaxy bin is larger than that of the less massive satellites: log (M_sub/h^-1 M_⊙ = 11.14_-0.73^+0.66 (M_sub/M_star = 19.5_-17.9^+19.8 versus log (M_sub/h^-1 M_⊙ = 12.38_-0.16^+0.16 (M_sub/M_star = 21.1_-7.7^+7.4).

Original language	English (US)
Pages (from-to)	2573-2583
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	458
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stw494
State	Published - Mar 8 2016

Keywords

Dark matter
Galaxies: Haloes
Galaxies: Statistics
Gravitational lensing: Weak
Methods: Data analysis

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnras/stw494

Cite this

@article{d322cc51558d47bba826e5dae5b40d5b,

title = "Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey",

abstract = "We use the shear catalogue from the CFHT Stripe-82 Survey to measure the subhalo masses of satellite galaxies in redMaPPer clusters. Assuming a Chabrier initial mass function and a truncated NFW model for the subhalo mass distribution, we find that the subhalo mass to galaxy stellar mass ratio increases as a function of projected halo-centric radius rp, from Msub/Mstar = 4.43-2.23+6.63 at rp ∈ [0.1, 0.3] h-1 Mpc to Msub/Mstar= 75.40-19.09+19.73 at rp ∈ [0.6, 0.9] h-1 Mpc. We also investigate the dependence of subhalo masses on stellar mass by splitting satellite galaxies into two stellar mass bins: 10 < log (Mstar/h-1 M⊙) < 10.5 and 11 < log (Mstar/h-1 M⊙) < 12. The best-fitting subhalo mass of the more massive satellite galaxy bin is larger than that of the less massive satellites: log (Msub/h-1 M⊙ = 11.14-0.73+0.66 (Msub/Mstar = 19.5-17.9+19.8 versus log (Msub/h-1 M⊙ = 12.38-0.16+0.16 (Msub/Mstar = 21.1-7.7+7.4).",

keywords = "Dark matter, Galaxies: Haloes, Galaxies: Statistics, Gravitational lensing: Weak, Methods: Data analysis",

author = "Ran Li and Huanyuan Shan and Kneib, \{Jean Paul\} and Houjun Mo and Eduardo Rozo and Alexie Leauthaud and John Moustakas and Lizhi Xie and Thomas Erben and \{Van Waerbeke\}, Ludovic and Martin Makler and Eli Rykoff and Bruno Moraes",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors.",

year = "2016",

month = mar,

day = "8",

doi = "10.1093/mnras/stw494",

language = "English (US)",

volume = "458",

pages = "2573--2583",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

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TY - JOUR

T1 - Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey

AU - Li, Ran

AU - Shan, Huanyuan

AU - Kneib, Jean Paul

AU - Mo, Houjun

AU - Rozo, Eduardo

AU - Leauthaud, Alexie

AU - Moustakas, John

AU - Xie, Lizhi

AU - Erben, Thomas

AU - Van Waerbeke, Ludovic

AU - Makler, Martin

AU - Rykoff, Eli

AU - Moraes, Bruno

PY - 2016/3/8

Y1 - 2016/3/8

N2 - We use the shear catalogue from the CFHT Stripe-82 Survey to measure the subhalo masses of satellite galaxies in redMaPPer clusters. Assuming a Chabrier initial mass function and a truncated NFW model for the subhalo mass distribution, we find that the subhalo mass to galaxy stellar mass ratio increases as a function of projected halo-centric radius rp, from Msub/Mstar = 4.43-2.23+6.63 at rp ∈ [0.1, 0.3] h-1 Mpc to Msub/Mstar= 75.40-19.09+19.73 at rp ∈ [0.6, 0.9] h-1 Mpc. We also investigate the dependence of subhalo masses on stellar mass by splitting satellite galaxies into two stellar mass bins: 10 < log (Mstar/h-1 M⊙) < 10.5 and 11 < log (Mstar/h-1 M⊙) < 12. The best-fitting subhalo mass of the more massive satellite galaxy bin is larger than that of the less massive satellites: log (Msub/h-1 M⊙ = 11.14-0.73+0.66 (Msub/Mstar = 19.5-17.9+19.8 versus log (Msub/h-1 M⊙ = 12.38-0.16+0.16 (Msub/Mstar = 21.1-7.7+7.4).

AB - We use the shear catalogue from the CFHT Stripe-82 Survey to measure the subhalo masses of satellite galaxies in redMaPPer clusters. Assuming a Chabrier initial mass function and a truncated NFW model for the subhalo mass distribution, we find that the subhalo mass to galaxy stellar mass ratio increases as a function of projected halo-centric radius rp, from Msub/Mstar = 4.43-2.23+6.63 at rp ∈ [0.1, 0.3] h-1 Mpc to Msub/Mstar= 75.40-19.09+19.73 at rp ∈ [0.6, 0.9] h-1 Mpc. We also investigate the dependence of subhalo masses on stellar mass by splitting satellite galaxies into two stellar mass bins: 10 < log (Mstar/h-1 M⊙) < 10.5 and 11 < log (Mstar/h-1 M⊙) < 12. The best-fitting subhalo mass of the more massive satellite galaxy bin is larger than that of the less massive satellites: log (Msub/h-1 M⊙ = 11.14-0.73+0.66 (Msub/Mstar = 19.5-17.9+19.8 versus log (Msub/h-1 M⊙ = 12.38-0.16+0.16 (Msub/Mstar = 21.1-7.7+7.4).

KW - Dark matter

KW - Galaxies: Haloes

KW - Galaxies: Statistics

KW - Gravitational lensing: Weak

KW - Methods: Data analysis

UR - https://www.scopus.com/pages/publications/84964780825

UR - https://www.scopus.com/pages/publications/84964780825#tab=citedBy

U2 - 10.1093/mnras/stw494

DO - 10.1093/mnras/stw494

M3 - Article

AN - SCOPUS:84964780825

SN - 0035-8711

VL - 458

SP - 2573

EP - 2583

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Measuring subhalo mass in redMaPPer clusters with CFHT Stripe 82 Survey

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Keywords

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