Skip to content

Mass functions, luminosity functions, and completeness measurements from clustering redshifts

Research output: Contribution to journalArticle

  • Dominic J. Bates
  • Rita Tojeiro
  • Jeffrey A. Newman
  • Violeta Gonzalez-Perez
  • Johan Comparat
  • Donald P. Schneider
  • Marcos Lima
  • Alina Streblyanska

This paper presents stellar mass functions and i-band luminosity functions for Sloan Digital Sky Survey (SDSS) galaxies with i < 21 using clustering redshifts. From these measurements, we also compute targeting completeness measurements for the Baryon Oscillation Spectroscopic Survey (BOSS). Clustering redshifts is a method of obtaining the redshift distribution of a sample of galaxies with only photometric information by measuring the angular cross-correlation with a spectroscopic sample in different redshift bins. We construct a spectroscopic sample containing data from the BOSS + eBOSS surveys, allowing us to recover redshift distributions from photometric data out to z 2.5. We produce k-corrected i-band luminosity functions and stellar mass functions by applying clustering redshifts to SDSS DR8 galaxies in small bins of colour and magnitude. There is little evolution in the mass function between 0.2 < z < 0.8, implying that the most massive galaxies form most of their mass before z = 0.8. These mass functions are used to produce stellar mass completeness estimates for the BOSS, giving a stellar mass completeness of 80 cent above M> 1011.4 between 0.2 < z < 0.7, with completeness falling significantly at redshifts higher than 0.7, and at lower masses. Large photometric data sets will be available in the near future (DECaLS, DES, Euclid), so this and similar techniques will become increasingly useful in order to fully utilize these data.

Original languageEnglish
Pages (from-to)3059-3077
Number of pages19
JournalMonthly Notices of the Royal Astronomical Society
Volume486
Issue number3
Early online date24 Apr 2019
DOIs
Publication statusPublished - 1 Jul 2019

Documents

  • stz997

    Rights statement: This article has been accepted for publication in MNRAS ©: 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

    Final published version, 2.32 MB, PDF document

Relations Get citation (various referencing formats)

ID: 15836025