Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8

L. Guennou, C. Adami, C. Da Rocha, F. Durret, M. P. Ulmer, S. Allam, S. Basa, C. Benoist, A. Biviano, D. Clowe, R. Gavazzi, C. Halliday, O. Ilbert, D. Johnston, D. Just, R. Kron, J. M. Kubo, V. Le Brun, P. Marshall, A. MazureK. J. Murphy, D. N E Pereira, C. R. Rabaça, F. Rostagni, G. Rudnick, D. Russeil, T. Schrabback, E. Slezak, D. Tucker, Dennis F Zaritsky

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Context. The study of intracluster light (ICL) can help us to understand the mechanisms taking place in galaxy clusters, and to place constraints on the cluster formation history and physical properties. However, owing to the intrinsic faintness of ICL emission, most searches and detailed studies of ICL have been limited to redshifts z < 0.4. Aims. To help us extend our knowledge of ICL properties to higher redshifts and study the evolution of ICL with redshift, we search for ICL in a subsample of ten clusters detected by the ESO Distant Cluster Survey (EDisCS), at redshifts 0.4 < z < 0.8, that are also part of our DAFT/FADA Survey. Methods. We analyze the ICL by applying the OV WAV package, a wavelet-based technique, to deep HST ACS images in the F814W filter and to V-band VLT/FORS2 images of three clusters. Detection levels are assessed as a function of the diffuse light source surface brightness using simulations. Results. In the F814W filter images, we detect diffuse light sources in all the clusters, with typical sizes of a few tens of kpc (assuming that they are at the cluster redshifts). The ICL detected by stacking the ten F814W images shows an 8σ detection in the source center extending over a ∼50 × 50 kpc 2 area, with a total absolute magnitude of-21.6 in the F814W filter, equivalent to about two L * galaxies per cluster. We find a weak correlation between the total F814W absolute magnitude of the ICL and the cluster velocity dispersion and mass. There is no apparent correlation between the cluster mass-to-light ratio (M/L) and the amount of ICL, and no evidence of any preferential orientation in the ICL source distribution. We find no strong variation in the amount of ICL between z = 0 and z = 0.8. In addition, we find wavelet-detected compact objects (WDCOs) in the three clusters for which data in two bands are available; these objects are probably very faint compact galaxies that in some cases are members of the respective clusters and comparable to the faint dwarf galaxies of the Local Group. Conclusions. We show that the ICL is prevalent in clusters at least up to redshift z = 0.8. In the future, we propose to detect the ICL at even higher redshifts, to determine wether there is a particular stage of cluster evolution where it was stripped from galaxies and spread into the intracluster medium.

Original languageEnglish (US)
Article numberA64
JournalAstronomy and Astrophysics
Volume537
DOIs
StatePublished - 2012

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galaxies
light sources
filter
wavelet
image filters
filters
compact galaxies
mass to light ratios
dwarf galaxies
extremely high frequencies
European Southern Observatory
light emission
brightness
stacking
physical properties
histories
physical property

Keywords

  • Galaxies: clusters: general
  • Galaxies: clusters: intracluster medium

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8. / Guennou, L.; Adami, C.; Da Rocha, C.; Durret, F.; Ulmer, M. P.; Allam, S.; Basa, S.; Benoist, C.; Biviano, A.; Clowe, D.; Gavazzi, R.; Halliday, C.; Ilbert, O.; Johnston, D.; Just, D.; Kron, R.; Kubo, J. M.; Le Brun, V.; Marshall, P.; Mazure, A.; Murphy, K. J.; Pereira, D. N E; Rabaça, C. R.; Rostagni, F.; Rudnick, G.; Russeil, D.; Schrabback, T.; Slezak, E.; Tucker, D.; Zaritsky, Dennis F.

In: Astronomy and Astrophysics, Vol. 537, A64, 2012.

Research output: Contribution to journalArticle

Guennou, L, Adami, C, Da Rocha, C, Durret, F, Ulmer, MP, Allam, S, Basa, S, Benoist, C, Biviano, A, Clowe, D, Gavazzi, R, Halliday, C, Ilbert, O, Johnston, D, Just, D, Kron, R, Kubo, JM, Le Brun, V, Marshall, P, Mazure, A, Murphy, KJ, Pereira, DNE, Rabaça, CR, Rostagni, F, Rudnick, G, Russeil, D, Schrabback, T, Slezak, E, Tucker, D & Zaritsky, DF 2012, 'Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8', Astronomy and Astrophysics, vol. 537, A64. https://doi.org/10.1051/0004-6361/201117482
Guennou, L. ; Adami, C. ; Da Rocha, C. ; Durret, F. ; Ulmer, M. P. ; Allam, S. ; Basa, S. ; Benoist, C. ; Biviano, A. ; Clowe, D. ; Gavazzi, R. ; Halliday, C. ; Ilbert, O. ; Johnston, D. ; Just, D. ; Kron, R. ; Kubo, J. M. ; Le Brun, V. ; Marshall, P. ; Mazure, A. ; Murphy, K. J. ; Pereira, D. N E ; Rabaça, C. R. ; Rostagni, F. ; Rudnick, G. ; Russeil, D. ; Schrabback, T. ; Slezak, E. ; Tucker, D. ; Zaritsky, Dennis F. / Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8. In: Astronomy and Astrophysics. 2012 ; Vol. 537.
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title = "Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8",
abstract = "Context. The study of intracluster light (ICL) can help us to understand the mechanisms taking place in galaxy clusters, and to place constraints on the cluster formation history and physical properties. However, owing to the intrinsic faintness of ICL emission, most searches and detailed studies of ICL have been limited to redshifts z < 0.4. Aims. To help us extend our knowledge of ICL properties to higher redshifts and study the evolution of ICL with redshift, we search for ICL in a subsample of ten clusters detected by the ESO Distant Cluster Survey (EDisCS), at redshifts 0.4 < z < 0.8, that are also part of our DAFT/FADA Survey. Methods. We analyze the ICL by applying the OV WAV package, a wavelet-based technique, to deep HST ACS images in the F814W filter and to V-band VLT/FORS2 images of three clusters. Detection levels are assessed as a function of the diffuse light source surface brightness using simulations. Results. In the F814W filter images, we detect diffuse light sources in all the clusters, with typical sizes of a few tens of kpc (assuming that they are at the cluster redshifts). The ICL detected by stacking the ten F814W images shows an 8σ detection in the source center extending over a ∼50 × 50 kpc 2 area, with a total absolute magnitude of-21.6 in the F814W filter, equivalent to about two L * galaxies per cluster. We find a weak correlation between the total F814W absolute magnitude of the ICL and the cluster velocity dispersion and mass. There is no apparent correlation between the cluster mass-to-light ratio (M/L) and the amount of ICL, and no evidence of any preferential orientation in the ICL source distribution. We find no strong variation in the amount of ICL between z = 0 and z = 0.8. In addition, we find wavelet-detected compact objects (WDCOs) in the three clusters for which data in two bands are available; these objects are probably very faint compact galaxies that in some cases are members of the respective clusters and comparable to the faint dwarf galaxies of the Local Group. Conclusions. We show that the ICL is prevalent in clusters at least up to redshift z = 0.8. In the future, we propose to detect the ICL at even higher redshifts, to determine wether there is a particular stage of cluster evolution where it was stripped from galaxies and spread into the intracluster medium.",
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author = "L. Guennou and C. Adami and {Da Rocha}, C. and F. Durret and Ulmer, {M. P.} and S. Allam and S. Basa and C. Benoist and A. Biviano and D. Clowe and R. Gavazzi and C. Halliday and O. Ilbert and D. Johnston and D. Just and R. Kron and Kubo, {J. M.} and {Le Brun}, V. and P. Marshall and A. Mazure and Murphy, {K. J.} and Pereira, {D. N E} and Raba{\cc}a, {C. R.} and F. Rostagni and G. Rudnick and D. Russeil and T. Schrabback and E. Slezak and D. Tucker and Zaritsky, {Dennis F}",
year = "2012",
doi = "10.1051/0004-6361/201117482",
language = "English (US)",
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TY - JOUR

T1 - Intracluster light in clusters of galaxies at redshifts 0.4 < z < 0.8

AU - Guennou, L.

AU - Adami, C.

AU - Da Rocha, C.

AU - Durret, F.

AU - Ulmer, M. P.

AU - Allam, S.

AU - Basa, S.

AU - Benoist, C.

AU - Biviano, A.

AU - Clowe, D.

AU - Gavazzi, R.

AU - Halliday, C.

AU - Ilbert, O.

AU - Johnston, D.

AU - Just, D.

AU - Kron, R.

AU - Kubo, J. M.

AU - Le Brun, V.

AU - Marshall, P.

AU - Mazure, A.

AU - Murphy, K. J.

AU - Pereira, D. N E

AU - Rabaça, C. R.

AU - Rostagni, F.

AU - Rudnick, G.

AU - Russeil, D.

AU - Schrabback, T.

AU - Slezak, E.

AU - Tucker, D.

AU - Zaritsky, Dennis F

PY - 2012

Y1 - 2012

N2 - Context. The study of intracluster light (ICL) can help us to understand the mechanisms taking place in galaxy clusters, and to place constraints on the cluster formation history and physical properties. However, owing to the intrinsic faintness of ICL emission, most searches and detailed studies of ICL have been limited to redshifts z < 0.4. Aims. To help us extend our knowledge of ICL properties to higher redshifts and study the evolution of ICL with redshift, we search for ICL in a subsample of ten clusters detected by the ESO Distant Cluster Survey (EDisCS), at redshifts 0.4 < z < 0.8, that are also part of our DAFT/FADA Survey. Methods. We analyze the ICL by applying the OV WAV package, a wavelet-based technique, to deep HST ACS images in the F814W filter and to V-band VLT/FORS2 images of three clusters. Detection levels are assessed as a function of the diffuse light source surface brightness using simulations. Results. In the F814W filter images, we detect diffuse light sources in all the clusters, with typical sizes of a few tens of kpc (assuming that they are at the cluster redshifts). The ICL detected by stacking the ten F814W images shows an 8σ detection in the source center extending over a ∼50 × 50 kpc 2 area, with a total absolute magnitude of-21.6 in the F814W filter, equivalent to about two L * galaxies per cluster. We find a weak correlation between the total F814W absolute magnitude of the ICL and the cluster velocity dispersion and mass. There is no apparent correlation between the cluster mass-to-light ratio (M/L) and the amount of ICL, and no evidence of any preferential orientation in the ICL source distribution. We find no strong variation in the amount of ICL between z = 0 and z = 0.8. In addition, we find wavelet-detected compact objects (WDCOs) in the three clusters for which data in two bands are available; these objects are probably very faint compact galaxies that in some cases are members of the respective clusters and comparable to the faint dwarf galaxies of the Local Group. Conclusions. We show that the ICL is prevalent in clusters at least up to redshift z = 0.8. In the future, we propose to detect the ICL at even higher redshifts, to determine wether there is a particular stage of cluster evolution where it was stripped from galaxies and spread into the intracluster medium.

AB - Context. The study of intracluster light (ICL) can help us to understand the mechanisms taking place in galaxy clusters, and to place constraints on the cluster formation history and physical properties. However, owing to the intrinsic faintness of ICL emission, most searches and detailed studies of ICL have been limited to redshifts z < 0.4. Aims. To help us extend our knowledge of ICL properties to higher redshifts and study the evolution of ICL with redshift, we search for ICL in a subsample of ten clusters detected by the ESO Distant Cluster Survey (EDisCS), at redshifts 0.4 < z < 0.8, that are also part of our DAFT/FADA Survey. Methods. We analyze the ICL by applying the OV WAV package, a wavelet-based technique, to deep HST ACS images in the F814W filter and to V-band VLT/FORS2 images of three clusters. Detection levels are assessed as a function of the diffuse light source surface brightness using simulations. Results. In the F814W filter images, we detect diffuse light sources in all the clusters, with typical sizes of a few tens of kpc (assuming that they are at the cluster redshifts). The ICL detected by stacking the ten F814W images shows an 8σ detection in the source center extending over a ∼50 × 50 kpc 2 area, with a total absolute magnitude of-21.6 in the F814W filter, equivalent to about two L * galaxies per cluster. We find a weak correlation between the total F814W absolute magnitude of the ICL and the cluster velocity dispersion and mass. There is no apparent correlation between the cluster mass-to-light ratio (M/L) and the amount of ICL, and no evidence of any preferential orientation in the ICL source distribution. We find no strong variation in the amount of ICL between z = 0 and z = 0.8. In addition, we find wavelet-detected compact objects (WDCOs) in the three clusters for which data in two bands are available; these objects are probably very faint compact galaxies that in some cases are members of the respective clusters and comparable to the faint dwarf galaxies of the Local Group. Conclusions. We show that the ICL is prevalent in clusters at least up to redshift z = 0.8. In the future, we propose to detect the ICL at even higher redshifts, to determine wether there is a particular stage of cluster evolution where it was stripped from galaxies and spread into the intracluster medium.

KW - Galaxies: clusters: general

KW - Galaxies: clusters: intracluster medium

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