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Luminosity function of [O ii] emission-line galaxies in the MassiveBlack-II simulation

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posted on 2023-06-08, 23:02 authored by KwangHo Park, Tiziana Di Matteo, Shirley Ho, Rupert Croft, Stephen WilkinsStephen Wilkins, Yu Feng, Nishikanta Khandai
We examine the luminosity function (LF) of [O?II] emission-line galaxies in the high-resolution cosmological simulation MassiveBlack-II (MBII). From the spectral energy distribution of each galaxy, we select a sub-sample of star-forming galaxies at 0.06 = z = 3.0 using the [O?II] emission line luminosity L([O?II]). We confirm that the specific star formation rate matches that in the Galaxy And Mass Assembly survey. We show that the [O?II] LF at z = 1.0 from the MBII shows good agreement with the LFs from several surveys below L([O?II]) = 1043.0 erg s-1 while the low redshifts (z = 0.3) show an excess in the prediction of bright [O?II] galaxies, but still displaying a good match with observations below L([O?II]) = 1041.6 erg s-1. Based on the validity in reproducing the properties of [O?II] galaxies at low redshift (z = 1), we forecast the evolution of the [O?II] LF at high redshift (z = 3), which can be tested by upcoming surveys such as the Hobby-Eberly Telescope Dark Energy Experiment and Dark Energy Spectroscopic Instrument. The slopes of the LFs at bright and faint ends range from -3 to -2 showing minima at z = 2. The slope of the bright end evolves approximately as (z + 1)-1 at z = 2 while the faint end evolves as ~3(z + 1)-1 at 0.6 = z = 2. In addition, a similar analysis is applied for the evolution of [O?III] LFs, which is to be explored in the forthcoming survey Wide-Field InfraRed Survey Telescope-Astrophysics Focused Telescope Assets. Finally, we show that the auto-correlation function of [O?II] and [O?III] emitting galaxies shows a rapid evolution from z = 2 to 1.

History

Publication status

  • Published

File Version

  • Published version

Journal

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

Publisher

Wiley-Blackwell

Issue

1

Volume

454

Page range

277-287

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2015-11-04

First Open Access (FOA) Date

2015-11-04

First Compliant Deposit (FCD) Date

2015-11-04

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