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Title: A large, deep 3 deg2 survey of H α, [O iii], and [O ii] emitters from LAGER: constraining luminosity functions

Abstract

ABSTRACT We present our measurements of the H α, [O iii], and [O ii] luminosity functions as part of the Lyman Alpha Galaxies at Epoch of Reionization (LAGER) survey using our samples of 1577 z = 0.47 H α-, 3933 z = 0.93 [O iii]-, and 5367 z = 1.59 [O ii]-selected emission line galaxies in a 3 deg2 single, CTIO/Blanco DECam pointing of the COSMOS field. Our observations reach 5σ depths of 8.2 × 10−18 erg s−1 cm−2 and comoving volumes of (1−7) × 105 Mpc3 making our survey one of the deepest narrow-band surveys. We select our emission line galaxies via spectroscopic confirmation, photometric redshifts, and colour–colour selections. We measure the observed luminosity functions for each sample and find best fits of $$\phi ^\star = 10^{-3.16^{+0.09}_{-0.09}}$$ Mpc−3 and $$L^\star = 10^{41.72^{+0.09}_{-0.09}}$$ erg s−1 for H α, $$\phi ^\star = 10^{-2.16^{+0.10}_{-0.12}}$$ Mpc−3 and $$L^\star = 10^{41.38^{+0.07}_{-0.06}}$$ erg s−1 for [O iii], and $$\phi ^\star = 10^{-1.97^{+0.07}_{-0.07}}$$ Mpc−3 and $$L^\star = 10^{41.66^{+0.03}_{-0.03}}$$ erg s−1 for [O ii], with α fixed to −1.75, −1.6, and −1.3, respectively. An excess of bright >1042 erg s−1 [O iii] emitters is observed and may be due to active galactic nucleus (AGN) contamination. Corrections for dust attenuation are applied assuming AHα = 1 mag. We also design our own empirical rest-frame g − r calibration using SDSS DR12 data, test it against our z = 0.47 H α emitters with zCOSMOS 1D spectra, and calibrate it for (g − r) between −0.8 and 1.3 mag. Dust and AGN-corrected star formation rate densities (SFRDs) are measured as log10ρSFR/(M⊙ yr−1 Mpc−3) = −1.63 ± 0.04, −1.07 ± 0.06, and −0.90 ± 0.10 for H α, [O iii], and [O ii], respectively. We find our [O iii] and [O ii] samples fully trace cosmic star formation activity at their respective redshifts in comparison to multiwavelength SFRDs, while the H α sample traces ∼70 per cent of the total z = 0.47 SFRD.

Authors:
ORCiD logo [1];  [2];  [2];  [3];  [4];  [1];  [3];  [5];  [6];  [7];  [4];  [8];  [7];  [7];  [9];  [10];  [11]
  1. Astrophysics Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
  2. Astrophysics Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA, School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
  3. CAS Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Shanghai 200030, China
  4. CAS Key Laboratory for Research in Galaxies and Cosmology, University of Science and Technology of China, Hefei, Anhui 230026, China
  5. Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Santiago 8970117, Chile
  6. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA, Chandler-Gilbert Community College, 2626 East Pecos Road, Chandler, AZ 85225-2499, USA
  7. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA
  8. Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile, Santiago 8970117, Chile, Las Campanas Observatory, Observatories of the Carnegie Institution of Washington, La Serena, Chile, Núcleo de Astronomía, Universidad Diego Portales, Santiago, Chile
  9. National Optical Astronomy Observatory, 950 N. Cherry Avenue, Tucson, AZ 85719, USA
  10. Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
  11. Las Campanas Observatory, Observatories of the Carnegie Institution of Washington, La Serena, Chile
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1604810
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 493 Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Khostovan, A. A., Malhotra, S., Rhoads, J. E., Jiang, C., Wang, J., Wold, I., Zheng, Z-Y, Barrientos, L. F., Coughlin, A., Harish, S., Hu, W., Infante, L., Perez, L. A., Pharo, J., Valdes, F., Walker, A. R., and Yang, H. A large, deep 3 deg2 survey of H α, [O iii], and [O ii] emitters from LAGER: constraining luminosity functions. United Kingdom: N. p., 2020. Web. doi:10.1093/mnras/staa175.
Khostovan, A. A., Malhotra, S., Rhoads, J. E., Jiang, C., Wang, J., Wold, I., Zheng, Z-Y, Barrientos, L. F., Coughlin, A., Harish, S., Hu, W., Infante, L., Perez, L. A., Pharo, J., Valdes, F., Walker, A. R., & Yang, H. A large, deep 3 deg2 survey of H α, [O iii], and [O ii] emitters from LAGER: constraining luminosity functions. United Kingdom. doi:10.1093/mnras/staa175.
Khostovan, A. A., Malhotra, S., Rhoads, J. E., Jiang, C., Wang, J., Wold, I., Zheng, Z-Y, Barrientos, L. F., Coughlin, A., Harish, S., Hu, W., Infante, L., Perez, L. A., Pharo, J., Valdes, F., Walker, A. R., and Yang, H. Mon . "A large, deep 3 deg2 survey of H α, [O iii], and [O ii] emitters from LAGER: constraining luminosity functions". United Kingdom. doi:10.1093/mnras/staa175.
@article{osti_1604810,
title = {A large, deep 3 deg2 survey of H α, [O iii], and [O ii] emitters from LAGER: constraining luminosity functions},
author = {Khostovan, A. A. and Malhotra, S. and Rhoads, J. E. and Jiang, C. and Wang, J. and Wold, I. and Zheng, Z-Y and Barrientos, L. F. and Coughlin, A. and Harish, S. and Hu, W. and Infante, L. and Perez, L. A. and Pharo, J. and Valdes, F. and Walker, A. R. and Yang, H.},
abstractNote = {ABSTRACT We present our measurements of the H α, [O iii], and [O ii] luminosity functions as part of the Lyman Alpha Galaxies at Epoch of Reionization (LAGER) survey using our samples of 1577 z = 0.47 H α-, 3933 z = 0.93 [O iii]-, and 5367 z = 1.59 [O ii]-selected emission line galaxies in a 3 deg2 single, CTIO/Blanco DECam pointing of the COSMOS field. Our observations reach 5σ depths of 8.2 × 10−18 erg s−1 cm−2 and comoving volumes of (1−7) × 105 Mpc3 making our survey one of the deepest narrow-band surveys. We select our emission line galaxies via spectroscopic confirmation, photometric redshifts, and colour–colour selections. We measure the observed luminosity functions for each sample and find best fits of $\phi ^\star = 10^{-3.16^{+0.09}_{-0.09}}$ Mpc−3 and $L^\star = 10^{41.72^{+0.09}_{-0.09}}$ erg s−1 for H α, $\phi ^\star = 10^{-2.16^{+0.10}_{-0.12}}$ Mpc−3 and $L^\star = 10^{41.38^{+0.07}_{-0.06}}$ erg s−1 for [O iii], and $\phi ^\star = 10^{-1.97^{+0.07}_{-0.07}}$ Mpc−3 and $L^\star = 10^{41.66^{+0.03}_{-0.03}}$ erg s−1 for [O ii], with α fixed to −1.75, −1.6, and −1.3, respectively. An excess of bright >1042 erg s−1 [O iii] emitters is observed and may be due to active galactic nucleus (AGN) contamination. Corrections for dust attenuation are applied assuming AHα = 1 mag. We also design our own empirical rest-frame g − r calibration using SDSS DR12 data, test it against our z = 0.47 H α emitters with zCOSMOS 1D spectra, and calibrate it for (g − r) between −0.8 and 1.3 mag. Dust and AGN-corrected star formation rate densities (SFRDs) are measured as log10ρSFR/(M⊙ yr−1 Mpc−3) = −1.63 ± 0.04, −1.07 ± 0.06, and −0.90 ± 0.10 for H α, [O iii], and [O ii], respectively. We find our [O iii] and [O ii] samples fully trace cosmic star formation activity at their respective redshifts in comparison to multiwavelength SFRDs, while the H α sample traces ∼70 per cent of the total z = 0.47 SFRD.},
doi = {10.1093/mnras/staa175},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 493,
place = {United Kingdom},
year = {2020},
month = {1}
}

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DOI: 10.1093/mnras/staa175

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  • Tresse, Laurence; Maddox, Steve J.
  • The Astrophysical Journal, Vol. 495, Issue 2
  • DOI: 10.1086/305331

Predicting dust extinction from the stellar mass of a galaxy: Dust extinction and stellar mass
journal, September 2010


The Subaru COSMOS 20: Subaru optical imaging of the HST COSMOS field with 20 filters
journal, November 2015

  • Taniguchi, Yoshiaki; Kajisawa, Masaru; Kobayashi, Masakazu A. R.
  • Publications of the Astronomical Society of Japan, Vol. 67, Issue 6
  • DOI: 10.1093/pasj/psv106

First Spectroscopic Confirmations of z ∼ 7.0 Ly α Emitting Galaxies in the LAGER Survey
journal, August 2017


HiZELS: a high-redshift survey of Hα emitters - I. The cosmic star formation rate and clustering at z = 2.23
journal, August 2008


Evolution of the H β + [O iii] and [O ii] luminosity functions and the [O ii] star formation history of the Universe up to z  ∼ 5 from HiZELS
journal, August 2015

  • Khostovan, A. A.; Sobral, D.; Mobasher, B.
  • Monthly Notices of the Royal Astronomical Society, Vol. 452, Issue 4
  • DOI: 10.1093/mnras/stv1474

The DEIMOS 10K Spectroscopic Survey Catalog of the COSMOS Field
journal, May 2018


Cosmic Star-Formation Activity at z = 2.2 Probed by H α Emission-Line Galaxies
journal, March 2011

  • Tadaki, Ken-ichi; Kodama, Tadayuki; Koyama, Yusei
  • Publications of the Astronomical Society of Japan, Vol. 63, Issue sp2
  • DOI: 10.1093/pasj/63.sp2.S437

CF-HiZELS, an ∼10 deg2 emission-line survey with spectroscopic follow-up: Hα, [O iii] + Hβ and [O ii] luminosity functions at z = 0.8, 1.4 and 2.2
journal, June 2015

  • Sobral, D.; Matthee, J.; Best, P. N.
  • Monthly Notices of the Royal Astronomical Society, Vol. 451, Issue 3
  • DOI: 10.1093/mnras/stv1076

The Luminosity Function and Star Formation Rate between Redshifts of 0.07 and 1.47 for Narrowband Emitters in the Subaru Deep Field
journal, March 2007

  • Ly, Chun; Malkan, Matt A.; Kashikawa, Nobunari
  • The Astrophysical Journal, Vol. 657, Issue 2
  • DOI: 10.1086/510828

The Large Early Galaxy Astrophysics Census (LEGA-C) Data Release 2: Dynamical and Stellar Population Properties of z ≲ 1 Galaxies in the COSMOS Field
journal, December 2018

  • Straatman, Caroline M. S.; Wel, Arjen van der; Bezanson, Rachel
  • The Astrophysical Journal Supplement Series, Vol. 239, Issue 2
  • DOI: 10.3847/1538-4365/aae37a

On the Normalization of the Cosmic Star Formation History
journal, November 2006

  • Hopkins, Andrew M.; Beacom, John F.
  • The Astrophysical Journal, Vol. 651, Issue 1
  • DOI: 10.1086/506610

The Dust Content and Opacity of Actively Star‐forming Galaxies
journal, April 2000

  • Calzetti, Daniela; Armus, Lee; Bohlin, Ralph C.
  • The Astrophysical Journal, Vol. 533, Issue 2
  • DOI: 10.1086/308692

THE CHANDRA COSMOS SURVEY. I. OVERVIEW AND POINT SOURCE CATALOG
journal, August 2009

  • Elvis, Martin; Civano, Francesca; Vignali, Cristian
  • The Astrophysical Journal Supplement Series, Vol. 184, Issue 1
  • DOI: 10.1088/0067-0049/184/1/158

The star formation rate density and dust attenuation evolution over 12 Gyr with the VVDS surveys
journal, February 2012


The [O ii ] λ3727 Luminosity Function and Star Formation Rate at z  ≈ 1.2 in the COSMOS 2 Square Degree Field and the Subaru Deep Field
journal, September 2007

  • Takahashi, M. I.; Shioya, Y.; Taniguchi, Y.
  • The Astrophysical Journal Supplement Series, Vol. 172, Issue 1
  • DOI: 10.1086/518037

The Hα Luminosity Function and Star Formation Rate at [CLC][ITAL]z[/ITAL][/CLC] ≈ 0.24 Based on Subaru Deep Imaging Data
journal, April 2003

  • Fujita, Shinobu S.; Ajiki, Masaru; Shioya, Yasuhiro
  • The Astrophysical Journal, Vol. 586, Issue 2
  • DOI: 10.1086/374859

THE zCOSMOS 10k-BRIGHT SPECTROSCOPIC SAMPLE
journal, September 2009

  • Lilly, Simon J.; Le Brun, Vincent; Maier, Christian
  • The Astrophysical Journal Supplement Series, Vol. 184, Issue 2
  • DOI: 10.1088/0067-0049/184/2/218

The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Survey Overview and Data Release 1
journal, May 2017

  • Masters, Daniel C.; Stern, Daniel K.; Cohen, Judith G.
  • The Astrophysical Journal, Vol. 841, Issue 2
  • DOI: 10.3847/1538-4357/aa6f08

The Ly α Luminosity Function and Cosmic Reionization at z ∼ 7.0: A Tale of Two LAGER Fields
journal, November 2019


Star-Forming Galaxies at z ≈ 0.24 in the Subaru Deep Field and the Sloan Digital Sky Survey
journal, December 2008

  • Morioka, Taichi; Nakajima, Aki; Taniguchi, Yoshiaki
  • Publications of the Astronomical Society of Japan, Vol. 60, Issue 6
  • DOI: 10.1093/pasj/60.6.1219

The Prism Multi-Object Survey (Primus). ii. data Reduction and Redshift Fitting
journal, April 2013


Dusty star-forming galaxies at high redshift
journal, August 2014


Infrared Power‐Law Galaxies in the Chandra Deep Field–South: Active Galactic Nuclei and Ultraluminous Infrared Galaxies
journal, March 2006

  • Alonso‐Herrero, A.; Perez‐Gonzalez, P. G.; Alexander, D. M.
  • The Astrophysical Journal, Vol. 640, Issue 1
  • DOI: 10.1086/499800

The COSMOS Survey: Hubble Space Telescope Advanced Camera for Surveys Observations and Data Processing
journal, September 2007

  • Koekemoer, A. M.; Aussel, H.; Calzetti, D.
  • The Astrophysical Journal Supplement Series, Vol. 172, Issue 1
  • DOI: 10.1086/520086

HiZELS: a high-redshift survey of Hα emitters - II. The nature of star-forming galaxies at z = 0.84
journal, September 2009


The Balmer decrement of Sloan Digital Sky Survey galaxies: The Balmer decrement of SDSS galaxies
journal, November 2011

  • Groves, Brent; Brinchmann, Jarle; Walcher, Carl Jakob
  • Monthly Notices of the Royal Astronomical Society, Vol. 419, Issue 2
  • DOI: 10.1111/j.1365-2966.2011.19796.x

UV LUMINOSITY FUNCTIONS AT REDSHIFTS z ∼ 4 TO z ∼ 10: 10,000 GALAXIES FROM HST LEGACY FIELDS
journal, April 2015


3D-HST: A WIDE-FIELD GRISM SPECTROSCOPIC SURVEY WITH THE HUBBLE SPACE TELESCOPE
journal, May 2012

  • Brammer, Gabriel B.; van Dokkum, Pieter G.; Franx, Marijn
  • The Astrophysical Journal Supplement Series, Vol. 200, Issue 2
  • DOI: 10.1088/0067-0049/200/2/13

A large Hα survey at z = 2.23, 1.47, 0.84 and 0.40: the 11 Gyr evolution of star-forming galaxies from HiZELS★
journal, November 2012

  • Sobral, David; Smail, Ian; Best, Philip N.
  • Monthly Notices of the Royal Astronomical Society, Vol. 428, Issue 2
  • DOI: 10.1093/mnras/sts096

Boötes-HiZELS: an optical to near-infrared survey of emission-line galaxies at z = 0.4–4.7
journal, June 2017

  • Matthee, Jorryt; Sobral, David; Best, Philip
  • Monthly Notices of the Royal Astronomical Society, Vol. 471, Issue 1
  • DOI: 10.1093/mnras/stx1569

A Faint Flux-limited Ly α Emitter Sample at z ∼ 0.3
journal, October 2017

  • Wold, Isak G. B.; Finkelstein, Steven L.; Barger, Amy J.
  • The Astrophysical Journal, Vol. 848, Issue 2
  • DOI: 10.3847/1538-4357/aa8d6b

Candels: the Cosmic Assembly Near-Infrared deep Extragalactic Legacy Survey
journal, December 2011

  • Grogin, Norman A.; Kocevski, Dale D.; Faber, S. M.
  • The Astrophysical Journal Supplement Series, Vol. 197, Issue 2
  • DOI: 10.1088/0067-0049/197/2/35

Evolution of the dusty infrared luminosity function from z   =   0 to z   =   2.3 using observations from Spitzer
journal, February 2011


Star forming rates between z = 0.25 and z = 1.2 from the CADIS emission line survey
journal, April 2003


The nature of Hβ+[O iii] and [O ii] emitters to z ∼ 5 with HiZELS: stellar mass functions and the evolution of EWs
journal, September 2016

  • Khostovan, A. A.; Sobral, D.; Mobasher, B.
  • Monthly Notices of the Royal Astronomical Society, Vol. 463, Issue 3
  • DOI: 10.1093/mnras/stw2174

Predicting Hα emission-line galaxy counts for future galaxy redshift surveys
journal, October 2017

  • Merson, Alexander; Wang, Yun; Benson, Andrew
  • Monthly Notices of the Royal Astronomical Society, Vol. 474, Issue 1
  • DOI: 10.1093/mnras/stx2649

Empirical Modeling of the Redshift Evolution of the $[{\rm{N}}\,{\rm{II}}]$/H α Ratio for Galaxy Redshift Surveys
journal, March 2018

  • Faisst, Andreas L.; Masters, Daniel; Wang, Yun
  • The Astrophysical Journal, Vol. 855, Issue 2
  • DOI: 10.3847/1538-4357/aab1fc