Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry

Tomotsugu Goto, Marc Postman, Nicholas J G Cross, G. D. Illingworth, K. Tran, D. Magee, M. Franx, N. Benítez, R. J. Bouwens, R. Demarco, H. C. Ford, N. L. Homeier, A. R. Martel, F. Menanteau, M. Clampin, G. F. Hartig, D. R. Ardila, F. Bartko, J. P. Blakeslee, L. D. Bradley & 24 others T. J. Broadhurst, R. A. Brown, C. J. Burrows, E. S. Cheng, P. D. Feldman, D. A. Golimowski, C. Gronwall, B. Holden, L. Infante, M. J. Jee, J. E. Krist, M. P. Lesser, S. Mei, G. R. Meurer, G. K. Miley, V. Motta, R. Overzier, M. Slrianni, W. B. Sparks, H. D. Tran, Zlatan Tsvetanov, R. L. White, W. Zheng, A. Zirm

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z = 0.83 cluster MS 1054-0321. Our analyses are based on imaging performed with the Advanced Camera for Surveys (ACS) on board the Rubble Space Telescope (HST) in the F606W, F775W, and F850LP passbands and extensive spectroscopic data obtained with the Keck Low-Resolution Imaging Spectrograph. Our main results are based on a spectroscopically selected sample of 143 cluster members with morphological classifications derived from the ACS observations. Our three primary findings are (1) the faint-end slope of the LF is steepest in the bluest filter, (2) the LF in the inner part of the cluster (or highest density regions) has a flatter faint-end slope, and (3) the fraction of early-type galaxies is higher at the bright end of the LF, and gradually decreases toward fainter magnitudes. These characteristics are consistent with those in local galaxy clusters, indicating that, at least in massive clusters, the common characteristics of cluster LFs are established at z = 0.83. These results provide additional support for the hypothesis that the formation of galaxies in MS 1054-0321 began at redshifts considerably greater than unity. We also find a 2 σ deficit of intrinsically faint, red galaxies (i 775 - z850 ≥ 0.5, Mi > -19) in this cluster. Although the significance is marginal, this trend may suggest that faint, red galaxies (which are common in z < 0.1 rich clusters) have not yet been created in this cluster at z = 0.83. The giant-to-dwarf ratio in MS 1054-0321 starts to increase inwards of the virial radius or when Σ > 30 Mpc-2, coinciding with the environment where the galaxy star formation rate and the morphology-density relation start to appear. A physical process that begins to become effective at around the virial radius or Σ ∼ 30 Mpc-2 may thus be responsible for the evolution of color and luminosity of cluster galaxies.

Original languageEnglish
Pages (from-to)188-200
Number of pages13
JournalAstrophysical Journal
Volume621
Issue number1 I
DOIs
Publication statusPublished - 1 Mar 2005
Externally publishedYes

Fingerprint

photometry
cameras
luminosity
galaxies
slopes
color
filter
radii
star formation rate
spectrographs
unity
telescopes
trends
filters

Keywords

  • Galaxies: clusters: general
  • Galaxies: clusters: individual (Cl 1056-03, MS 1054-0321)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Goto, T., Postman, M., Cross, N. J. G., Illingworth, G. D., Tran, K., Magee, D., ... Zirm, A. (2005). Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry. Astrophysical Journal, 621(1 I), 188-200. https://doi.org/10.1086/427492

Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry. / Goto, Tomotsugu; Postman, Marc; Cross, Nicholas J G; Illingworth, G. D.; Tran, K.; Magee, D.; Franx, M.; Benítez, N.; Bouwens, R. J.; Demarco, R.; Ford, H. C.; Homeier, N. L.; Martel, A. R.; Menanteau, F.; Clampin, M.; Hartig, G. F.; Ardila, D. R.; Bartko, F.; Blakeslee, J. P.; Bradley, L. D.; Broadhurst, T. J.; Brown, R. A.; Burrows, C. J.; Cheng, E. S.; Feldman, P. D.; Golimowski, D. A.; Gronwall, C.; Holden, B.; Infante, L.; Jee, M. J.; Krist, J. E.; Lesser, M. P.; Mei, S.; Meurer, G. R.; Miley, G. K.; Motta, V.; Overzier, R.; Slrianni, M.; Sparks, W. B.; Tran, H. D.; Tsvetanov, Zlatan; White, R. L.; Zheng, W.; Zirm, A.

In: Astrophysical Journal, Vol. 621, No. 1 I, 01.03.2005, p. 188-200.

Research output: Contribution to journalArticle

Goto, T, Postman, M, Cross, NJG, Illingworth, GD, Tran, K, Magee, D, Franx, M, Benítez, N, Bouwens, RJ, Demarco, R, Ford, HC, Homeier, NL, Martel, AR, Menanteau, F, Clampin, M, Hartig, GF, Ardila, DR, Bartko, F, Blakeslee, JP, Bradley, LD, Broadhurst, TJ, Brown, RA, Burrows, CJ, Cheng, ES, Feldman, PD, Golimowski, DA, Gronwall, C, Holden, B, Infante, L, Jee, MJ, Krist, JE, Lesser, MP, Mei, S, Meurer, GR, Miley, GK, Motta, V, Overzier, R, Slrianni, M, Sparks, WB, Tran, HD, Tsvetanov, Z, White, RL, Zheng, W & Zirm, A 2005, 'Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry', Astrophysical Journal, vol. 621, no. 1 I, pp. 188-200. https://doi.org/10.1086/427492
Goto T, Postman M, Cross NJG, Illingworth GD, Tran K, Magee D et al. Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry. Astrophysical Journal. 2005 Mar 1;621(1 I):188-200. https://doi.org/10.1086/427492
Goto, Tomotsugu ; Postman, Marc ; Cross, Nicholas J G ; Illingworth, G. D. ; Tran, K. ; Magee, D. ; Franx, M. ; Benítez, N. ; Bouwens, R. J. ; Demarco, R. ; Ford, H. C. ; Homeier, N. L. ; Martel, A. R. ; Menanteau, F. ; Clampin, M. ; Hartig, G. F. ; Ardila, D. R. ; Bartko, F. ; Blakeslee, J. P. ; Bradley, L. D. ; Broadhurst, T. J. ; Brown, R. A. ; Burrows, C. J. ; Cheng, E. S. ; Feldman, P. D. ; Golimowski, D. A. ; Gronwall, C. ; Holden, B. ; Infante, L. ; Jee, M. J. ; Krist, J. E. ; Lesser, M. P. ; Mei, S. ; Meurer, G. R. ; Miley, G. K. ; Motta, V. ; Overzier, R. ; Slrianni, M. ; Sparks, W. B. ; Tran, H. D. ; Tsvetanov, Zlatan ; White, R. L. ; Zheng, W. ; Zirm, A. / Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry. In: Astrophysical Journal. 2005 ; Vol. 621, No. 1 I. pp. 188-200.
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TY - JOUR

T1 - Luminosity functions of the galaxy cluster MS 1054-0321 at z = 0.83 based on ACS photometry

AU - Goto, Tomotsugu

AU - Postman, Marc

AU - Cross, Nicholas J G

AU - Illingworth, G. D.

AU - Tran, K.

AU - Magee, D.

AU - Franx, M.

AU - Benítez, N.

AU - Bouwens, R. J.

AU - Demarco, R.

AU - Ford, H. C.

AU - Homeier, N. L.

AU - Martel, A. R.

AU - Menanteau, F.

AU - Clampin, M.

AU - Hartig, G. F.

AU - Ardila, D. R.

AU - Bartko, F.

AU - Blakeslee, J. P.

AU - Bradley, L. D.

AU - Broadhurst, T. J.

AU - Brown, R. A.

AU - Burrows, C. J.

AU - Cheng, E. S.

AU - Feldman, P. D.

AU - Golimowski, D. A.

AU - Gronwall, C.

AU - Holden, B.

AU - Infante, L.

AU - Jee, M. J.

AU - Krist, J. E.

AU - Lesser, M. P.

AU - Mei, S.

AU - Meurer, G. R.

AU - Miley, G. K.

AU - Motta, V.

AU - Overzier, R.

AU - Slrianni, M.

AU - Sparks, W. B.

AU - Tran, H. D.

AU - Tsvetanov, Zlatan

AU - White, R. L.

AU - Zheng, W.

AU - Zirm, A.

PY - 2005/3/1

Y1 - 2005/3/1

N2 - We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z = 0.83 cluster MS 1054-0321. Our analyses are based on imaging performed with the Advanced Camera for Surveys (ACS) on board the Rubble Space Telescope (HST) in the F606W, F775W, and F850LP passbands and extensive spectroscopic data obtained with the Keck Low-Resolution Imaging Spectrograph. Our main results are based on a spectroscopically selected sample of 143 cluster members with morphological classifications derived from the ACS observations. Our three primary findings are (1) the faint-end slope of the LF is steepest in the bluest filter, (2) the LF in the inner part of the cluster (or highest density regions) has a flatter faint-end slope, and (3) the fraction of early-type galaxies is higher at the bright end of the LF, and gradually decreases toward fainter magnitudes. These characteristics are consistent with those in local galaxy clusters, indicating that, at least in massive clusters, the common characteristics of cluster LFs are established at z = 0.83. These results provide additional support for the hypothesis that the formation of galaxies in MS 1054-0321 began at redshifts considerably greater than unity. We also find a 2 σ deficit of intrinsically faint, red galaxies (i 775 - z850 ≥ 0.5, Mi > -19) in this cluster. Although the significance is marginal, this trend may suggest that faint, red galaxies (which are common in z < 0.1 rich clusters) have not yet been created in this cluster at z = 0.83. The giant-to-dwarf ratio in MS 1054-0321 starts to increase inwards of the virial radius or when Σ > 30 Mpc-2, coinciding with the environment where the galaxy star formation rate and the morphology-density relation start to appear. A physical process that begins to become effective at around the virial radius or Σ ∼ 30 Mpc-2 may thus be responsible for the evolution of color and luminosity of cluster galaxies.

AB - We present new measurements of the galaxy luminosity function (LF) and its dependence on local galaxy density, color, morphology, and clustocentric radius for the massive z = 0.83 cluster MS 1054-0321. Our analyses are based on imaging performed with the Advanced Camera for Surveys (ACS) on board the Rubble Space Telescope (HST) in the F606W, F775W, and F850LP passbands and extensive spectroscopic data obtained with the Keck Low-Resolution Imaging Spectrograph. Our main results are based on a spectroscopically selected sample of 143 cluster members with morphological classifications derived from the ACS observations. Our three primary findings are (1) the faint-end slope of the LF is steepest in the bluest filter, (2) the LF in the inner part of the cluster (or highest density regions) has a flatter faint-end slope, and (3) the fraction of early-type galaxies is higher at the bright end of the LF, and gradually decreases toward fainter magnitudes. These characteristics are consistent with those in local galaxy clusters, indicating that, at least in massive clusters, the common characteristics of cluster LFs are established at z = 0.83. These results provide additional support for the hypothesis that the formation of galaxies in MS 1054-0321 began at redshifts considerably greater than unity. We also find a 2 σ deficit of intrinsically faint, red galaxies (i 775 - z850 ≥ 0.5, Mi > -19) in this cluster. Although the significance is marginal, this trend may suggest that faint, red galaxies (which are common in z < 0.1 rich clusters) have not yet been created in this cluster at z = 0.83. The giant-to-dwarf ratio in MS 1054-0321 starts to increase inwards of the virial radius or when Σ > 30 Mpc-2, coinciding with the environment where the galaxy star formation rate and the morphology-density relation start to appear. A physical process that begins to become effective at around the virial radius or Σ ∼ 30 Mpc-2 may thus be responsible for the evolution of color and luminosity of cluster galaxies.

KW - Galaxies: clusters: general

KW - Galaxies: clusters: individual (Cl 1056-03, MS 1054-0321)

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