Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH). I. UV Luminosity Functions at $z \sim 4-7$ Derived with the Half-Million Dropouts on the 100 deg$^2$ Sky

By Yoshiaki Ono, M. Ouchi, Y. Harikane, J. Toshikawa, M. Rauch, S. Yuma, M. Sawicki, T. Shibuya, K. Shimasaku, M. Oguri and 16 more. 2017

170 citations recorded by the source corpus.

We study the UV luminosity functions (LFs) at $z\sim 4$, $5$, $6,$ and $7$ based on the deep large-area optical images taken by the Hyper Suprime-Cam (HSC) Subaru strategic program (SSP). On the 100 deg$^2$ sky of the HSC SSP data available to date, we make enormous samples consisting of a total of 579,565 dropout candidates at $z\sim 4-7$ by the standard color selection technique, 358 out of which are spectroscopically confirmed by our follow-up spectroscopy and other studies. We obtain UV LFs at $z \sim 4-7$ that span a very wide UV luminosity range of $\sim 0.002 - 100 \, L_{\rm UV}^\ast$ ($-26 2 \sigma$ significance, and require either double power-law functions or modified Schechter functions that consider a magnification bias due to gravitational lensing.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/c066e878d8a60c378725b239cb75c4258cbc0246

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In Astronomy and Astrophysics

1. M. Ouchi
2. M. Strauss
3. Yoshiaki Ono
4. M. Oguri
5. J. Brinkmann
6. Robert Lupton
7. D. Schneider
8. L. Hernquist

In Instrumentation

1. M. Ouchi
2. M. Strauss
3. M. Oguri
4. Yoshiaki Ono
5. James E. Gunn
6. Robert Lupton
7. Y. Harikane
8. N. Kashikawa

Citations in the corpus

• Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6 (2018, methodology): “Finally, Figure 12 indicates that LBGs (taken from Ono et al. 2018) outnumber quasars at M1450 > −23 mag.”
• Systematic Identification of LAEs for Visible Exploration and Reionization Research Using Subaru HSC (SILVERRUSH). I. Program strategy and clustering properties of ∼2000 Lyα emitters at z = 6–7 over the 0.3–0.5 Gpc2 survey area (2017, unknown): “This program is one of a set of twin programs; the other is is a study for dropouts, called the Great Optically Luminous Dropout Research Using Subaru HSC (GOLDRUSH), and is detailed in Ono et al. (2018), Harikane et al. (2018), and Toshikawa et al. (2018).”