The VIMOS-VLT deep survey: Evolution in the halo occupation number since z∼ 1

U. Abbas, S. de la Torre, O. Le Fèvre, L. Guzzo, C. Marinoni, B. Meneux, A. Pollo, G. Zamorani, D. Bottini, B. Garilli, V. Le Brun, D. Maccagni, R. Scaramella, M. Scodeggio, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. Arnouts, S. BardelliM. Bolzonella, A. Cappi, S. Charlot, P. Ciliegi, T. Contini, S. Foucaud, P. Franzetti, I. Gavignaud, O. Ilbert, A. Iovino, F. Lamareille, H. J. McCracken, B. Marano, A. Mazure, R. Merighi, S. Paltani, R. Pellò, L. Pozzetti, M. Radovich, D. Vergani, E. Zucca, M. Bondi, A. Bongiorno, J. Brinchmann, O. Cucciati, L. de Ravel, L. Gregorini, E. Perez-Montero, Y. Mellier, P. Merluzzi

Resultado de la investigación: Article

31 Citas (Scopus)

Resumen

We model the evolution of the mean galaxy occupation of dark matter haloes over the range 0.1 < z < 1.3, using the data from the VIMOS-VLT Deep Survey. The galaxy projected correlation function wp(rp) was computed for a set of luminosity-limited subsamples and fits to its shape were obtained using two variants of halo occupation distribution (HOD) models. These provide us with a set of best-fitting parameters, from which we obtain the average mass of a halo and average number of galaxies per halo. We find that after accounting for the evolution in luminosity and assuming that we are largely following the same population, the underlying dark matter halo shows a growth in mass with decreasing redshift as expected in a hierarchical structure formation scenario. Using two different HOD models, we see that the halo mass grows by 90 per cent over the redshift interval z = [0.5, 1.0]. This is the first time the evolution in halo mass at high redshifts has been obtained from a single data survey and it follows the simple form seen in N-body simulations with M(z) = M0 e-βz, and β = 1.3 ± 0.30. This provides evidence for a rapid accretion phase of massive haloes having a present-day mass M0 ∼ 1013.5 h-1 M, with a m > 0.1 M0 merger event occurring between redshifts of 0.5 and 1.0. Furthermore, we find that more luminous galaxies are found to occupy more massive haloes irrespective of the redshift. Finally, the average number of galaxies per halo shows little increase from redshift z∼ 1.0 to ∼0.5, with a sharp increase by a factor of ∼3 from z ∼ 0.5 to ∼0.1, likely due to the dynamical friction of subhaloes within their host haloes.

Idioma originalEnglish
Páginas (desde-hasta)1306-1317
Número de páginas12
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen406
N.º2
DOI
EstadoPublished - ago 2010

Huella dactilar

occupation
merger
halos
friction
galaxies
dark matter

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Abbas, U., de la Torre, S., Le Fèvre, O., Guzzo, L., Marinoni, C., Meneux, B., ... Merluzzi, P. (2010). The VIMOS-VLT deep survey: Evolution in the halo occupation number since z∼ 1. Monthly Notices of the Royal Astronomical Society, 406(2), 1306-1317. https://doi.org/10.1111/j.1365-2966.2010.16764.x
Abbas, U. ; de la Torre, S. ; Le Fèvre, O. ; Guzzo, L. ; Marinoni, C. ; Meneux, B. ; Pollo, A. ; Zamorani, G. ; Bottini, D. ; Garilli, B. ; Le Brun, V. ; Maccagni, D. ; Scaramella, R. ; Scodeggio, M. ; Tresse, L. ; Vettolani, G. ; Zanichelli, A. ; Adami, C. ; Arnouts, S. ; Bardelli, S. ; Bolzonella, M. ; Cappi, A. ; Charlot, S. ; Ciliegi, P. ; Contini, T. ; Foucaud, S. ; Franzetti, P. ; Gavignaud, I. ; Ilbert, O. ; Iovino, A. ; Lamareille, F. ; McCracken, H. J. ; Marano, B. ; Mazure, A. ; Merighi, R. ; Paltani, S. ; Pellò, R. ; Pozzetti, L. ; Radovich, M. ; Vergani, D. ; Zucca, E. ; Bondi, M. ; Bongiorno, A. ; Brinchmann, J. ; Cucciati, O. ; de Ravel, L. ; Gregorini, L. ; Perez-Montero, E. ; Mellier, Y. ; Merluzzi, P. / The VIMOS-VLT deep survey : Evolution in the halo occupation number since z∼ 1. En: Monthly Notices of the Royal Astronomical Society. 2010 ; Vol. 406, N.º 2. pp. 1306-1317.
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abstract = "We model the evolution of the mean galaxy occupation of dark matter haloes over the range 0.1 < z < 1.3, using the data from the VIMOS-VLT Deep Survey. The galaxy projected correlation function wp(rp) was computed for a set of luminosity-limited subsamples and fits to its shape were obtained using two variants of halo occupation distribution (HOD) models. These provide us with a set of best-fitting parameters, from which we obtain the average mass of a halo and average number of galaxies per halo. We find that after accounting for the evolution in luminosity and assuming that we are largely following the same population, the underlying dark matter halo shows a growth in mass with decreasing redshift as expected in a hierarchical structure formation scenario. Using two different HOD models, we see that the halo mass grows by 90 per cent over the redshift interval z = [0.5, 1.0]. This is the first time the evolution in halo mass at high redshifts has been obtained from a single data survey and it follows the simple form seen in N-body simulations with M(z) = M0 e-βz, and β = 1.3 ± 0.30. This provides evidence for a rapid accretion phase of massive haloes having a present-day mass M0 ∼ 1013.5 h-1 M⊙, with a m > 0.1 M0 merger event occurring between redshifts of 0.5 and 1.0. Furthermore, we find that more luminous galaxies are found to occupy more massive haloes irrespective of the redshift. Finally, the average number of galaxies per halo shows little increase from redshift z∼ 1.0 to ∼0.5, with a sharp increase by a factor of ∼3 from z ∼ 0.5 to ∼0.1, likely due to the dynamical friction of subhaloes within their host haloes.",
keywords = "Galaxies: high-redshift, Large-scale structure of Universe, Methods: statistical, Surveys",
author = "U. Abbas and {de la Torre}, S. and {Le F{\`e}vre}, O. and L. Guzzo and C. Marinoni and B. Meneux and A. Pollo and G. Zamorani and D. Bottini and B. Garilli and {Le Brun}, V. and D. Maccagni and R. Scaramella and M. Scodeggio and L. Tresse and G. Vettolani and A. Zanichelli and C. Adami and S. Arnouts and S. Bardelli and M. Bolzonella and A. Cappi and S. Charlot and P. Ciliegi and T. Contini and S. Foucaud and P. Franzetti and I. Gavignaud and O. Ilbert and A. Iovino and F. Lamareille and McCracken, {H. J.} and B. Marano and A. Mazure and R. Merighi and S. Paltani and R. Pell{\`o} and L. Pozzetti and M. Radovich and D. Vergani and E. Zucca and M. Bondi and A. Bongiorno and J. Brinchmann and O. Cucciati and {de Ravel}, L. and L. Gregorini and E. Perez-Montero and Y. Mellier and P. Merluzzi",
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Abbas, U, de la Torre, S, Le Fèvre, O, Guzzo, L, Marinoni, C, Meneux, B, Pollo, A, Zamorani, G, Bottini, D, Garilli, B, Le Brun, V, Maccagni, D, Scaramella, R, Scodeggio, M, Tresse, L, Vettolani, G, Zanichelli, A, Adami, C, Arnouts, S, Bardelli, S, Bolzonella, M, Cappi, A, Charlot, S, Ciliegi, P, Contini, T, Foucaud, S, Franzetti, P, Gavignaud, I, Ilbert, O, Iovino, A, Lamareille, F, McCracken, HJ, Marano, B, Mazure, A, Merighi, R, Paltani, S, Pellò, R, Pozzetti, L, Radovich, M, Vergani, D, Zucca, E, Bondi, M, Bongiorno, A, Brinchmann, J, Cucciati, O, de Ravel, L, Gregorini, L, Perez-Montero, E, Mellier, Y & Merluzzi, P 2010, 'The VIMOS-VLT deep survey: Evolution in the halo occupation number since z∼ 1', Monthly Notices of the Royal Astronomical Society, vol. 406, n.º 2, pp. 1306-1317. https://doi.org/10.1111/j.1365-2966.2010.16764.x

The VIMOS-VLT deep survey : Evolution in the halo occupation number since z∼ 1. / Abbas, U.; de la Torre, S.; Le Fèvre, O.; Guzzo, L.; Marinoni, C.; Meneux, B.; Pollo, A.; Zamorani, G.; Bottini, D.; Garilli, B.; Le Brun, V.; Maccagni, D.; Scaramella, R.; Scodeggio, M.; Tresse, L.; Vettolani, G.; Zanichelli, A.; Adami, C.; Arnouts, S.; Bardelli, S.; Bolzonella, M.; Cappi, A.; Charlot, S.; Ciliegi, P.; Contini, T.; Foucaud, S.; Franzetti, P.; Gavignaud, I.; Ilbert, O.; Iovino, A.; Lamareille, F.; McCracken, H. J.; Marano, B.; Mazure, A.; Merighi, R.; Paltani, S.; Pellò, R.; Pozzetti, L.; Radovich, M.; Vergani, D.; Zucca, E.; Bondi, M.; Bongiorno, A.; Brinchmann, J.; Cucciati, O.; de Ravel, L.; Gregorini, L.; Perez-Montero, E.; Mellier, Y.; Merluzzi, P.

En: Monthly Notices of the Royal Astronomical Society, Vol. 406, N.º 2, 08.2010, p. 1306-1317.

Resultado de la investigación: Article

TY - JOUR

T1 - The VIMOS-VLT deep survey

T2 - Evolution in the halo occupation number since z∼ 1

AU - Abbas, U.

AU - de la Torre, S.

AU - Le Fèvre, O.

AU - Guzzo, L.

AU - Marinoni, C.

AU - Meneux, B.

AU - Pollo, A.

AU - Zamorani, G.

AU - Bottini, D.

AU - Garilli, B.

AU - Le Brun, V.

AU - Maccagni, D.

AU - Scaramella, R.

AU - Scodeggio, M.

AU - Tresse, L.

AU - Vettolani, G.

AU - Zanichelli, A.

AU - Adami, C.

AU - Arnouts, S.

AU - Bardelli, S.

AU - Bolzonella, M.

AU - Cappi, A.

AU - Charlot, S.

AU - Ciliegi, P.

AU - Contini, T.

AU - Foucaud, S.

AU - Franzetti, P.

AU - Gavignaud, I.

AU - Ilbert, O.

AU - Iovino, A.

AU - Lamareille, F.

AU - McCracken, H. J.

AU - Marano, B.

AU - Mazure, A.

AU - Merighi, R.

AU - Paltani, S.

AU - Pellò, R.

AU - Pozzetti, L.

AU - Radovich, M.

AU - Vergani, D.

AU - Zucca, E.

AU - Bondi, M.

AU - Bongiorno, A.

AU - Brinchmann, J.

AU - Cucciati, O.

AU - de Ravel, L.

AU - Gregorini, L.

AU - Perez-Montero, E.

AU - Mellier, Y.

AU - Merluzzi, P.

PY - 2010/8

Y1 - 2010/8

N2 - We model the evolution of the mean galaxy occupation of dark matter haloes over the range 0.1 < z < 1.3, using the data from the VIMOS-VLT Deep Survey. The galaxy projected correlation function wp(rp) was computed for a set of luminosity-limited subsamples and fits to its shape were obtained using two variants of halo occupation distribution (HOD) models. These provide us with a set of best-fitting parameters, from which we obtain the average mass of a halo and average number of galaxies per halo. We find that after accounting for the evolution in luminosity and assuming that we are largely following the same population, the underlying dark matter halo shows a growth in mass with decreasing redshift as expected in a hierarchical structure formation scenario. Using two different HOD models, we see that the halo mass grows by 90 per cent over the redshift interval z = [0.5, 1.0]. This is the first time the evolution in halo mass at high redshifts has been obtained from a single data survey and it follows the simple form seen in N-body simulations with M(z) = M0 e-βz, and β = 1.3 ± 0.30. This provides evidence for a rapid accretion phase of massive haloes having a present-day mass M0 ∼ 1013.5 h-1 M⊙, with a m > 0.1 M0 merger event occurring between redshifts of 0.5 and 1.0. Furthermore, we find that more luminous galaxies are found to occupy more massive haloes irrespective of the redshift. Finally, the average number of galaxies per halo shows little increase from redshift z∼ 1.0 to ∼0.5, with a sharp increase by a factor of ∼3 from z ∼ 0.5 to ∼0.1, likely due to the dynamical friction of subhaloes within their host haloes.

AB - We model the evolution of the mean galaxy occupation of dark matter haloes over the range 0.1 < z < 1.3, using the data from the VIMOS-VLT Deep Survey. The galaxy projected correlation function wp(rp) was computed for a set of luminosity-limited subsamples and fits to its shape were obtained using two variants of halo occupation distribution (HOD) models. These provide us with a set of best-fitting parameters, from which we obtain the average mass of a halo and average number of galaxies per halo. We find that after accounting for the evolution in luminosity and assuming that we are largely following the same population, the underlying dark matter halo shows a growth in mass with decreasing redshift as expected in a hierarchical structure formation scenario. Using two different HOD models, we see that the halo mass grows by 90 per cent over the redshift interval z = [0.5, 1.0]. This is the first time the evolution in halo mass at high redshifts has been obtained from a single data survey and it follows the simple form seen in N-body simulations with M(z) = M0 e-βz, and β = 1.3 ± 0.30. This provides evidence for a rapid accretion phase of massive haloes having a present-day mass M0 ∼ 1013.5 h-1 M⊙, with a m > 0.1 M0 merger event occurring between redshifts of 0.5 and 1.0. Furthermore, we find that more luminous galaxies are found to occupy more massive haloes irrespective of the redshift. Finally, the average number of galaxies per halo shows little increase from redshift z∼ 1.0 to ∼0.5, with a sharp increase by a factor of ∼3 from z ∼ 0.5 to ∼0.1, likely due to the dynamical friction of subhaloes within their host haloes.

KW - Galaxies: high-redshift

KW - Large-scale structure of Universe

KW - Methods: statistical

KW - Surveys

UR - http://www.scopus.com/inward/record.url?scp=77957733667&partnerID=8YFLogxK

U2 - 10.1111/j.1365-2966.2010.16764.x

DO - 10.1111/j.1365-2966.2010.16764.x

M3 - Article

AN - SCOPUS:77957733667

VL - 406

SP - 1306

EP - 1317

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -