A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION

Alexie Leauthaud; Alexis Finoguenov; Jean-Paul Kneib; James E. Taylor; Richard Massey; Jason Rhodes; Olivier Ilbert; Kevin Bundy; Jeremy Tinker; Matthew R. George; Peter Capak; Anton M. Koekemoer; David E. Johnston; Yu-Ying Zhang; Nico Cappelluti; Richard S. Ellis; Martin Elvis; Stefania Giodini; Catherine Heymans; Oliver Le Fevre; Simon Lilly; Henry J. McCracken; Yannick Mellier; Alexandre Refregier; Mara Salvato; Nick Scoville; George Smoot; Masayuki Tanaka; Ludovic Van Waerbeke; Melody Wolk

doi:10.1088/0004-637X/709/1/97

A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION

Alexie Leauthaud, Alexis Finoguenov, Jean-Paul Kneib, James E. Taylor, Richard Massey, Jason Rhodes, Olivier Ilbert, Kevin Bundy, Jeremy Tinker, Matthew R. George, Peter Capak, Anton M. Koekemoer, David E. Johnston, Yu-Ying Zhang, Nico Cappelluti, Richard S. Ellis, Martin Elvis, Stefania Giodini, Catherine Heymans, Oliver Le FevreSimon Lilly, Henry J. McCracken, Yannick Mellier, Alexandre Refregier, Mara Salvato, Nick Scoville, George Smoot, Masayuki Tanaka, Ludovic Van Waerbeke, Melody Wolk

School of Physics and Astronomy

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

Abstract

Measurements of X-ray scaling laws are critical for improving cosmological constraints derived with the halo mass function and for understanding the physical processes that govern the heating and cooling of the intracluster medium. In this paper, we use a sample of 206 X-ray-selected galaxy groups to investigate the scaling relation between X-ray luminosity (L-X) and halo mass (M-200) where M-200 is derived via stacked weak gravitational lensing. This work draws upon a broad array of multi-wavelength COSMOS observations including 1.64 degrees(2) of contiguous imaging with the Advanced Camera for Surveys to a limiting magnitude of I-F814W = 26.5 and deep XMM-Newton/Chandra imaging to a limiting flux of 1.0 x 10(-15) erg cm(-2) s(-1) in the 0.5-2 keV band. The combined depth of these two data sets allows us to probe the lensing signals of X-ray-detected structures at both higher redshifts and lower masses than previously explored. Weak lensing profiles and halo masses are derived for nine sub-samples, narrowly binned in luminosity and redshift. The COSMOS data alone are well fit by a power law, M-200 alpha (L-X)(alpha), with a slope of alpha = 0.66 +/- 0.14. These results significantly extend the dynamic range for which the halo masses of X-ray-selected structures have been measured with weak gravitational lensing. As a result, tight constraints are obtained for the slope of the M-L-X relation. The combination of our group data with previously published cluster data demonstrates that the M-L-X relation is well described by a single power law, a = 0.64 +/- 0.03, over two decades in mass, M-200 similar to 10(13.5)-10(15.5) h(72)(-1) M-circle dot. These results are inconsistent at the 3.7 sigma level with the self-similar prediction of alpha = 0.75. We examine the redshift dependence of the M-L-X relation and find little evidence for evolution beyond the rate predicted by self-similarity from z similar to 0.25 to z similar to 0.8.

Original language	English
Pages (from-to)	97-114
Number of pages	18
Journal	Astrophysical Journal
Volume	709
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/709/1/97
Publication status	Published - 20 Jan 2010

Keywords

cosmology: observations
gravitational lensing
large-scale structure of universe
HUBBLE-SPACE-TELESCOPE
GALAXY CLUSTER SURVEY
DIGITAL SKY SURVEY
DARK-MATTER HALOS
WIDE-FIELD SURVEY
SCALING RELATIONS
COSMOLOGICAL PARAMETERS
PHOTOMETRIC REDSHIFTS
ADVANCED CAMERA
SOURCE CATALOG

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10.1088/0004-637X/709/1/97

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Leauthaud, A., Finoguenov, A., Kneib, J-P., Taylor, J. E., Massey, R., Rhodes, J., Ilbert, O., Bundy, K., Tinker, J., George, M. R., Capak, P., Koekemoer, A. M., Johnston, D. E., Zhang, Y-Y., Cappelluti, N., Ellis, R. S., Elvis, M., Giodini, S., Heymans, C., ... Wolk, M. (2010). A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION. Astrophysical Journal, 709(1), 97-114. https://doi.org/10.1088/0004-637X/709/1/97

@article{788eb961291d49f4ba30b32cd438452e,

title = "A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION",

abstract = "Measurements of X-ray scaling laws are critical for improving cosmological constraints derived with the halo mass function and for understanding the physical processes that govern the heating and cooling of the intracluster medium. In this paper, we use a sample of 206 X-ray-selected galaxy groups to investigate the scaling relation between X-ray luminosity (L-X) and halo mass (M-200) where M-200 is derived via stacked weak gravitational lensing. This work draws upon a broad array of multi-wavelength COSMOS observations including 1.64 degrees(2) of contiguous imaging with the Advanced Camera for Surveys to a limiting magnitude of I-F814W = 26.5 and deep XMM-Newton/Chandra imaging to a limiting flux of 1.0 x 10(-15) erg cm(-2) s(-1) in the 0.5-2 keV band. The combined depth of these two data sets allows us to probe the lensing signals of X-ray-detected structures at both higher redshifts and lower masses than previously explored. Weak lensing profiles and halo masses are derived for nine sub-samples, narrowly binned in luminosity and redshift. The COSMOS data alone are well fit by a power law, M-200 alpha (L-X)(alpha), with a slope of alpha = 0.66 +/- 0.14. These results significantly extend the dynamic range for which the halo masses of X-ray-selected structures have been measured with weak gravitational lensing. As a result, tight constraints are obtained for the slope of the M-L-X relation. The combination of our group data with previously published cluster data demonstrates that the M-L-X relation is well described by a single power law, a = 0.64 +/- 0.03, over two decades in mass, M-200 similar to 10(13.5)-10(15.5) h(72)(-1) M-circle dot. These results are inconsistent at the 3.7 sigma level with the self-similar prediction of alpha = 0.75. We examine the redshift dependence of the M-L-X relation and find little evidence for evolution beyond the rate predicted by self-similarity from z similar to 0.25 to z similar to 0.8.",

keywords = "cosmology: observations, gravitational lensing, large-scale structure of universe, HUBBLE-SPACE-TELESCOPE, GALAXY CLUSTER SURVEY, DIGITAL SKY SURVEY, DARK-MATTER HALOS, WIDE-FIELD SURVEY, SCALING RELATIONS, COSMOLOGICAL PARAMETERS, PHOTOMETRIC REDSHIFTS, ADVANCED CAMERA, SOURCE CATALOG",

author = "Alexie Leauthaud and Alexis Finoguenov and Jean-Paul Kneib and Taylor, {James E.} and Richard Massey and Jason Rhodes and Olivier Ilbert and Kevin Bundy and Jeremy Tinker and George, {Matthew R.} and Peter Capak and Koekemoer, {Anton M.} and Johnston, {David E.} and Yu-Ying Zhang and Nico Cappelluti and Ellis, {Richard S.} and Martin Elvis and Stefania Giodini and Catherine Heymans and {Le Fevre}, Oliver and Simon Lilly and McCracken, {Henry J.} and Yannick Mellier and Alexandre Refregier and Mara Salvato and Nick Scoville and George Smoot and Masayuki Tanaka and {Van Waerbeke}, Ludovic and Melody Wolk",

year = "2010",

month = jan,

day = "20",

doi = "10.1088/0004-637X/709/1/97",

language = "English",

volume = "709",

pages = "97--114",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Leauthaud, A, Finoguenov, A, Kneib, J-P, Taylor, JE, Massey, R, Rhodes, J, Ilbert, O, Bundy, K, Tinker, J, George, MR, Capak, P, Koekemoer, AM, Johnston, DE, Zhang, Y-Y, Cappelluti, N, Ellis, RS, Elvis, M, Giodini, S, Heymans, C, Le Fevre, O, Lilly, S, McCracken, HJ, Mellier, Y, Refregier, A, Salvato, M, Scoville, N, Smoot, G, Tanaka, M, Van Waerbeke, L & Wolk, M 2010, 'A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION', Astrophysical Journal, vol. 709, no. 1, pp. 97-114. https://doi.org/10.1088/0004-637X/709/1/97

TY - JOUR

T1 - A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION

AU - Leauthaud, Alexie

AU - Finoguenov, Alexis

AU - Kneib, Jean-Paul

AU - Taylor, James E.

AU - Massey, Richard

AU - Rhodes, Jason

AU - Ilbert, Olivier

AU - Bundy, Kevin

AU - Tinker, Jeremy

AU - George, Matthew R.

AU - Capak, Peter

AU - Koekemoer, Anton M.

AU - Johnston, David E.

AU - Zhang, Yu-Ying

AU - Cappelluti, Nico

AU - Ellis, Richard S.

AU - Elvis, Martin

AU - Giodini, Stefania

AU - Heymans, Catherine

AU - Le Fevre, Oliver

AU - Lilly, Simon

AU - McCracken, Henry J.

AU - Mellier, Yannick

AU - Refregier, Alexandre

AU - Salvato, Mara

AU - Scoville, Nick

AU - Smoot, George

AU - Tanaka, Masayuki

AU - Van Waerbeke, Ludovic

AU - Wolk, Melody

PY - 2010/1/20

Y1 - 2010/1/20

N2 - Measurements of X-ray scaling laws are critical for improving cosmological constraints derived with the halo mass function and for understanding the physical processes that govern the heating and cooling of the intracluster medium. In this paper, we use a sample of 206 X-ray-selected galaxy groups to investigate the scaling relation between X-ray luminosity (L-X) and halo mass (M-200) where M-200 is derived via stacked weak gravitational lensing. This work draws upon a broad array of multi-wavelength COSMOS observations including 1.64 degrees(2) of contiguous imaging with the Advanced Camera for Surveys to a limiting magnitude of I-F814W = 26.5 and deep XMM-Newton/Chandra imaging to a limiting flux of 1.0 x 10(-15) erg cm(-2) s(-1) in the 0.5-2 keV band. The combined depth of these two data sets allows us to probe the lensing signals of X-ray-detected structures at both higher redshifts and lower masses than previously explored. Weak lensing profiles and halo masses are derived for nine sub-samples, narrowly binned in luminosity and redshift. The COSMOS data alone are well fit by a power law, M-200 alpha (L-X)(alpha), with a slope of alpha = 0.66 +/- 0.14. These results significantly extend the dynamic range for which the halo masses of X-ray-selected structures have been measured with weak gravitational lensing. As a result, tight constraints are obtained for the slope of the M-L-X relation. The combination of our group data with previously published cluster data demonstrates that the M-L-X relation is well described by a single power law, a = 0.64 +/- 0.03, over two decades in mass, M-200 similar to 10(13.5)-10(15.5) h(72)(-1) M-circle dot. These results are inconsistent at the 3.7 sigma level with the self-similar prediction of alpha = 0.75. We examine the redshift dependence of the M-L-X relation and find little evidence for evolution beyond the rate predicted by self-similarity from z similar to 0.25 to z similar to 0.8.

AB - Measurements of X-ray scaling laws are critical for improving cosmological constraints derived with the halo mass function and for understanding the physical processes that govern the heating and cooling of the intracluster medium. In this paper, we use a sample of 206 X-ray-selected galaxy groups to investigate the scaling relation between X-ray luminosity (L-X) and halo mass (M-200) where M-200 is derived via stacked weak gravitational lensing. This work draws upon a broad array of multi-wavelength COSMOS observations including 1.64 degrees(2) of contiguous imaging with the Advanced Camera for Surveys to a limiting magnitude of I-F814W = 26.5 and deep XMM-Newton/Chandra imaging to a limiting flux of 1.0 x 10(-15) erg cm(-2) s(-1) in the 0.5-2 keV band. The combined depth of these two data sets allows us to probe the lensing signals of X-ray-detected structures at both higher redshifts and lower masses than previously explored. Weak lensing profiles and halo masses are derived for nine sub-samples, narrowly binned in luminosity and redshift. The COSMOS data alone are well fit by a power law, M-200 alpha (L-X)(alpha), with a slope of alpha = 0.66 +/- 0.14. These results significantly extend the dynamic range for which the halo masses of X-ray-selected structures have been measured with weak gravitational lensing. As a result, tight constraints are obtained for the slope of the M-L-X relation. The combination of our group data with previously published cluster data demonstrates that the M-L-X relation is well described by a single power law, a = 0.64 +/- 0.03, over two decades in mass, M-200 similar to 10(13.5)-10(15.5) h(72)(-1) M-circle dot. These results are inconsistent at the 3.7 sigma level with the self-similar prediction of alpha = 0.75. We examine the redshift dependence of the M-L-X relation and find little evidence for evolution beyond the rate predicted by self-similarity from z similar to 0.25 to z similar to 0.8.

KW - cosmology: observations

KW - gravitational lensing

KW - large-scale structure of universe

KW - HUBBLE-SPACE-TELESCOPE

KW - GALAXY CLUSTER SURVEY

KW - DIGITAL SKY SURVEY

KW - DARK-MATTER HALOS

KW - WIDE-FIELD SURVEY

KW - SCALING RELATIONS

KW - COSMOLOGICAL PARAMETERS

KW - PHOTOMETRIC REDSHIFTS

KW - ADVANCED CAMERA

KW - SOURCE CATALOG

U2 - 10.1088/0004-637X/709/1/97

DO - 10.1088/0004-637X/709/1/97

M3 - Literature review

VL - 709

SP - 97

EP - 114

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

ER -

A WEAK LENSING STUDY OF X-RAY GROUPS IN THE COSMOS SURVEY: FORM AND EVOLUTION OF THE MASS-LUMINOSITY RELATION

Abstract

Keywords

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