The Sloan Digital Sky Survey u-band Galaxy Survey: Luminosity functions and evolution

I. K. Baldry, K. Glazebrook, T. Budavári, D. J. Eisenstein, J. Annis, N. A. Bahcall, M. R. Blanton, J. Brinkmann, I. Csabai, T. M. Heckman, H. Lin, J. Loveday, R. C. Nichol, D. P. Schneider

    Research output: Contribution to journalArticle

    Abstract

    We construct and analyse a u-band selected galaxy sample from the Sloan Digital Sky Survey (SDSS) Southern Survey, which covers 275 deg 2. The sample includes 43223 galaxies with spectroscopic redshifts in the range 0.005 < z < 0.3 and with 14.5 < u < 20.5. The signal-to-noise (S/N) ratio in the u-band Petrosian aperture is improved by co-adding multiple epochs of imaging data and by including sky-subtraction corrections. Luminosity functions for the near-UV 0.1u band (λ ≈ 322 ± 26 nm) are determined in redshift slices of width 0.02, which show a highly significant evolution in M* of -0.8 ± 0.1 mag between z = 0 and 0.3; with M* - 5 log h 70 = -18.84 ± 0.05(AB mag), log φ * = -2.06 ± 0.03 (h 70 3 Mpc -3) and log ρ L = 19.11 ± 0.02 (h 70 W Hz -1 Mpc -3) at z = 0.1. The faint-end slope determined for z < 0.06 is given by α = -1.05 ± 0.08. This is in agreement with recent determinations from the Galaxy Evolution Explorer at shorter wavelengths. Comparing our z < 0.3 luminosity density measurements with 0.2 < z < 1.2 from Classifying Objects by Medium Band Observations in 17 Filters (COMBO-17), we find that the 280-nm density evolves as ρ L α (1 + z) β with β = 2.1 ± 0.2; and find no evidence for any change in slope over this redshift range. By comparing with other measurements of cosmic star formation history, we estimate that the effective dust attenuation at 280 nm has increased by 0.8 ± 0.3 mag between z = 0 and 1.

    Original languageEnglish (US)
    Pages (from-to)441-456
    Number of pages16
    JournalMonthly Notices of the Royal Astronomical Society
    Volume358
    Issue number2
    DOIs
    StatePublished - Apr 1 2005

    Fingerprint

    luminosity
    galaxies
    signal-to-noise ratio
    slopes
    dust
    filter
    wavelength
    history
    classifying
    subtraction
    sky
    star formation
    signal to noise ratios
    apertures
    attenuation
    time measurement
    histories
    filters
    estimates
    wavelengths

    Keywords

    • Galaxies: evolution
    • Galaxies: fundamental parameters
    • Galaxies: luminosity function, mass function
    • Surveys
    • Ultraviolet: galaxies

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Baldry, I. K., Glazebrook, K., Budavári, T., Eisenstein, D. J., Annis, J., Bahcall, N. A., ... Schneider, D. P. (2005). The Sloan Digital Sky Survey u-band Galaxy Survey: Luminosity functions and evolution. Monthly Notices of the Royal Astronomical Society, 358(2), 441-456. https://doi.org/10.1111/j.1365-2966.2005.08799.x

    The Sloan Digital Sky Survey u-band Galaxy Survey : Luminosity functions and evolution. / Baldry, I. K.; Glazebrook, K.; Budavári, T.; Eisenstein, D. J.; Annis, J.; Bahcall, N. A.; Blanton, M. R.; Brinkmann, J.; Csabai, I.; Heckman, T. M.; Lin, H.; Loveday, J.; Nichol, R. C.; Schneider, D. P.

    In: Monthly Notices of the Royal Astronomical Society, Vol. 358, No. 2, 01.04.2005, p. 441-456.

    Research output: Contribution to journalArticle

    Baldry, IK, Glazebrook, K, Budavári, T, Eisenstein, DJ, Annis, J, Bahcall, NA, Blanton, MR, Brinkmann, J, Csabai, I, Heckman, TM, Lin, H, Loveday, J, Nichol, RC & Schneider, DP 2005, 'The Sloan Digital Sky Survey u-band Galaxy Survey: Luminosity functions and evolution', Monthly Notices of the Royal Astronomical Society, vol. 358, no. 2, pp. 441-456. https://doi.org/10.1111/j.1365-2966.2005.08799.x
    Baldry, I. K. ; Glazebrook, K. ; Budavári, T. ; Eisenstein, D. J. ; Annis, J. ; Bahcall, N. A. ; Blanton, M. R. ; Brinkmann, J. ; Csabai, I. ; Heckman, T. M. ; Lin, H. ; Loveday, J. ; Nichol, R. C. ; Schneider, D. P. / The Sloan Digital Sky Survey u-band Galaxy Survey : Luminosity functions and evolution. In: Monthly Notices of the Royal Astronomical Society. 2005 ; Vol. 358, No. 2. pp. 441-456.
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    T2 - Luminosity functions and evolution

    AU - Baldry, I. K.

    AU - Glazebrook, K.

    AU - Budavári, T.

    AU - Eisenstein, D. J.

    AU - Annis, J.

    AU - Bahcall, N. A.

    AU - Blanton, M. R.

    AU - Brinkmann, J.

    AU - Csabai, I.

    AU - Heckman, T. M.

    AU - Lin, H.

    AU - Loveday, J.

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    N2 - We construct and analyse a u-band selected galaxy sample from the Sloan Digital Sky Survey (SDSS) Southern Survey, which covers 275 deg 2. The sample includes 43223 galaxies with spectroscopic redshifts in the range 0.005 < z < 0.3 and with 14.5 < u < 20.5. The signal-to-noise (S/N) ratio in the u-band Petrosian aperture is improved by co-adding multiple epochs of imaging data and by including sky-subtraction corrections. Luminosity functions for the near-UV 0.1u band (λ ≈ 322 ± 26 nm) are determined in redshift slices of width 0.02, which show a highly significant evolution in M* of -0.8 ± 0.1 mag between z = 0 and 0.3; with M* - 5 log h 70 = -18.84 ± 0.05(AB mag), log φ * = -2.06 ± 0.03 (h 70 3 Mpc -3) and log ρ L = 19.11 ± 0.02 (h 70 W Hz -1 Mpc -3) at z = 0.1. The faint-end slope determined for z < 0.06 is given by α = -1.05 ± 0.08. This is in agreement with recent determinations from the Galaxy Evolution Explorer at shorter wavelengths. Comparing our z < 0.3 luminosity density measurements with 0.2 < z < 1.2 from Classifying Objects by Medium Band Observations in 17 Filters (COMBO-17), we find that the 280-nm density evolves as ρ L α (1 + z) β with β = 2.1 ± 0.2; and find no evidence for any change in slope over this redshift range. By comparing with other measurements of cosmic star formation history, we estimate that the effective dust attenuation at 280 nm has increased by 0.8 ± 0.3 mag between z = 0 and 1.

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    KW - Galaxies: luminosity function, mass function

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    KW - Ultraviolet: galaxies

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