Galaxy number counts from the Sloan Digital Sky Survey commissioning data

Naoki Yasuda, Masataka Fukugita, Vijay K. Narayanan, Robert H. Lupton, Iskra Strateva, Michael A. Strauss, Željko Ivezić, Rita S J Kim, David W. Hoog, David H. Weinberg, Kazuhiro Shimasaku, Jon Loveday, James Annis, Neta A. Bahcall, Michael Blanton, Jon Brinkmann, Robert J. Brunner, Andrew J. Connolly, István Csabai, Mamoru DoiMasaru Hamabe, Shin Ichi Ichikawa, Takashi Ichikawa, David E. Johnston, G. R. Knapp, Peter Z. Kunszt, D. Q. Lamb, Timothy A. Mckay, Jeffrey A. Munn, Robert C. Nichol, Sadanori Okamura, Donald P. Schneider, Gyula P. Szokoly, Michael S. Vogeley, Masaru Watanabe, Donald G. York

    Research output: Contribution to journalArticle

    Abstract

    We present bright galaxy number counts in five broad bands (u′, g′, r′, i′, z′) from imaging data taken during the commissioning phase of the Sloan Digital Sky Survey (SDSS). The counts are derived from two independent stripes of imaging scans along the celestial equator, one each toward the northern and the southern Galactic cap, covering about 230 and 210 deg2, respectively. A careful study is made to verify the reliability of the photometric catalog. For galaxies brighter than r* = 16, the catalog produced by automated software is examined against eye inspection of all objects. Statistically meaningful results on the galaxy counts are obtained in the magnitude range 12 ≤ r* ≤ 21, using a sample of 900,000 galaxies. The counts from the two stripes differ by about 30% at magnitudes brighter than r* = 15.5, consistent with a local 2 σ fluctuation due to large-scale structure in the galaxy distribution. The shape of the number counts-magnitude relation brighter than r* = 16 is well characterized by N ∝ 100.6m, the relation expected for a homogeneous galaxy distribution in a "Euclidean" universe. In the magnitude range 16 < r* < 21, the galaxy counts from both stripes agree very well and follow the prediction of the no-evolution model, although the data do not exclude a small amount of evolution. We use empirically determined color transformations to derive the galaxy number counts in the B and I814 bands. We compute the luminosity density of the universe at zero redshift in the five SDSS bands and in the B band. We find ℒB = 2.4 ± 0.4 × 108 L h Mpc-3, for a reasonably wide range of parameters of the Schechter luminosity function in the B band.

    Original languageEnglish (US)
    Pages (from-to)1104-1124
    Number of pages21
    JournalAstronomical Journal
    Volume122
    Issue number3
    DOIs
    StatePublished - Sep 2001

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    galaxies
    catalogs
    universe
    luminosity
    software
    equators
    prediction
    caps
    inspection
    coverings
    broadband
    computer programs
    color
    distribution
    predictions
    parameter

    Keywords

    • Cosmology: observations

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Yasuda, N., Fukugita, M., Narayanan, V. K., Lupton, R. H., Strateva, I., Strauss, M. A., ... York, D. G. (2001). Galaxy number counts from the Sloan Digital Sky Survey commissioning data. Astronomical Journal, 122(3), 1104-1124. https://doi.org/10.1086/322093

    Galaxy number counts from the Sloan Digital Sky Survey commissioning data. / Yasuda, Naoki; Fukugita, Masataka; Narayanan, Vijay K.; Lupton, Robert H.; Strateva, Iskra; Strauss, Michael A.; Ivezić, Željko; Kim, Rita S J; Hoog, David W.; Weinberg, David H.; Shimasaku, Kazuhiro; Loveday, Jon; Annis, James; Bahcall, Neta A.; Blanton, Michael; Brinkmann, Jon; Brunner, Robert J.; Connolly, Andrew J.; Csabai, István; Doi, Mamoru; Hamabe, Masaru; Ichikawa, Shin Ichi; Ichikawa, Takashi; Johnston, David E.; Knapp, G. R.; Kunszt, Peter Z.; Lamb, D. Q.; Mckay, Timothy A.; Munn, Jeffrey A.; Nichol, Robert C.; Okamura, Sadanori; Schneider, Donald P.; Szokoly, Gyula P.; Vogeley, Michael S.; Watanabe, Masaru; York, Donald G.

    In: Astronomical Journal, Vol. 122, No. 3, 09.2001, p. 1104-1124.

    Research output: Contribution to journalArticle

    Yasuda, N, Fukugita, M, Narayanan, VK, Lupton, RH, Strateva, I, Strauss, MA, Ivezić, Ž, Kim, RSJ, Hoog, DW, Weinberg, DH, Shimasaku, K, Loveday, J, Annis, J, Bahcall, NA, Blanton, M, Brinkmann, J, Brunner, RJ, Connolly, AJ, Csabai, I, Doi, M, Hamabe, M, Ichikawa, SI, Ichikawa, T, Johnston, DE, Knapp, GR, Kunszt, PZ, Lamb, DQ, Mckay, TA, Munn, JA, Nichol, RC, Okamura, S, Schneider, DP, Szokoly, GP, Vogeley, MS, Watanabe, M & York, DG 2001, 'Galaxy number counts from the Sloan Digital Sky Survey commissioning data', Astronomical Journal, vol. 122, no. 3, pp. 1104-1124. https://doi.org/10.1086/322093
    Yasuda N, Fukugita M, Narayanan VK, Lupton RH, Strateva I, Strauss MA et al. Galaxy number counts from the Sloan Digital Sky Survey commissioning data. Astronomical Journal. 2001 Sep;122(3):1104-1124. https://doi.org/10.1086/322093
    Yasuda, Naoki ; Fukugita, Masataka ; Narayanan, Vijay K. ; Lupton, Robert H. ; Strateva, Iskra ; Strauss, Michael A. ; Ivezić, Željko ; Kim, Rita S J ; Hoog, David W. ; Weinberg, David H. ; Shimasaku, Kazuhiro ; Loveday, Jon ; Annis, James ; Bahcall, Neta A. ; Blanton, Michael ; Brinkmann, Jon ; Brunner, Robert J. ; Connolly, Andrew J. ; Csabai, István ; Doi, Mamoru ; Hamabe, Masaru ; Ichikawa, Shin Ichi ; Ichikawa, Takashi ; Johnston, David E. ; Knapp, G. R. ; Kunszt, Peter Z. ; Lamb, D. Q. ; Mckay, Timothy A. ; Munn, Jeffrey A. ; Nichol, Robert C. ; Okamura, Sadanori ; Schneider, Donald P. ; Szokoly, Gyula P. ; Vogeley, Michael S. ; Watanabe, Masaru ; York, Donald G. / Galaxy number counts from the Sloan Digital Sky Survey commissioning data. In: Astronomical Journal. 2001 ; Vol. 122, No. 3. pp. 1104-1124.
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    abstract = "We present bright galaxy number counts in five broad bands (u′, g′, r′, i′, z′) from imaging data taken during the commissioning phase of the Sloan Digital Sky Survey (SDSS). The counts are derived from two independent stripes of imaging scans along the celestial equator, one each toward the northern and the southern Galactic cap, covering about 230 and 210 deg2, respectively. A careful study is made to verify the reliability of the photometric catalog. For galaxies brighter than r* = 16, the catalog produced by automated software is examined against eye inspection of all objects. Statistically meaningful results on the galaxy counts are obtained in the magnitude range 12 ≤ r* ≤ 21, using a sample of 900,000 galaxies. The counts from the two stripes differ by about 30{\%} at magnitudes brighter than r* = 15.5, consistent with a local 2 σ fluctuation due to large-scale structure in the galaxy distribution. The shape of the number counts-magnitude relation brighter than r* = 16 is well characterized by N ∝ 100.6m, the relation expected for a homogeneous galaxy distribution in a {"}Euclidean{"} universe. In the magnitude range 16 < r* < 21, the galaxy counts from both stripes agree very well and follow the prediction of the no-evolution model, although the data do not exclude a small amount of evolution. We use empirically determined color transformations to derive the galaxy number counts in the B and I814 bands. We compute the luminosity density of the universe at zero redshift in the five SDSS bands and in the B band. We find ℒB = 2.4 ± 0.4 × 108 L⊙ h Mpc-3, for a reasonably wide range of parameters of the Schechter luminosity function in the B band.",
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    AU - Yasuda, Naoki

    AU - Fukugita, Masataka

    AU - Narayanan, Vijay K.

    AU - Lupton, Robert H.

    AU - Strateva, Iskra

    AU - Strauss, Michael A.

    AU - Ivezić, Željko

    AU - Kim, Rita S J

    AU - Hoog, David W.

    AU - Weinberg, David H.

    AU - Shimasaku, Kazuhiro

    AU - Loveday, Jon

    AU - Annis, James

    AU - Bahcall, Neta A.

    AU - Blanton, Michael

    AU - Brinkmann, Jon

    AU - Brunner, Robert J.

    AU - Connolly, Andrew J.

    AU - Csabai, István

    AU - Doi, Mamoru

    AU - Hamabe, Masaru

    AU - Ichikawa, Shin Ichi

    AU - Ichikawa, Takashi

    AU - Johnston, David E.

    AU - Knapp, G. R.

    AU - Kunszt, Peter Z.

    AU - Lamb, D. Q.

    AU - Mckay, Timothy A.

    AU - Munn, Jeffrey A.

    AU - Nichol, Robert C.

    AU - Okamura, Sadanori

    AU - Schneider, Donald P.

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