TY - JOUR

T1 - A 1.4 deg2 blind survey for C II], C III] and C IV at z ∼ 0.7–1.5

T2 - II. Luminosity functions and cosmic average line ratios

AU - Stroe, Andra

AU - Sobral, David

AU - Matthee, Jorryt

AU - Calhau, João

AU - Oteo, Ivan

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The definitive publisher-authenticated version Andra Stroe, David Sobral, Jorryt Matthee, João Calhau, Ivan Oteo; A 1.4 deg2 blind survey for C II], C III] and C IV at z ∼ 0.7–1.5 – II. Luminosity functions and cosmic average line ratios, Monthly Notices of the Royal Astronomical Society, Volume 471, Issue 3, 1 November 2017, Pages 2575–2586, https://doi.org/10.1093/mnras/stx1713 is available online at: https://academic.oup.com/mnras/article/471/3/2575/3950256/A-14-deg2-blind-survey-for-C-II-C-III-and-C-IV-at

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Recently, the CIII] and CIV emission lines have been observed in galaxies in the early Universe ($z>5$), providing new ways to measure their redshift and study their stellar populations and AGN. We explore the first blind CII], CIII] and CIV survey ($z\sim0.68, 1.05, 1.53$, respectively) presented in Stroe et al. (2017). We derive luminosity functions (LF) and study properties of CII], CIII] and CIV line emitters through comparisons to the LFs of H$\alpha$ and Ly$\alpha$ emitters, UV selected star forming (SF) galaxies and quasars at similar redshifts. The CII] LF at $z\sim0.68$ is equally well described by a Schechter or a power-law LF, characteristic of a mixture of SF and AGN activity. The CIII] LF ($z\sim1.05$) is consistent to a scaled down version of the Schechter H$\alpha$ and Ly$\alpha$ LF at their redshift, indicating a SF origin. In stark contrast, the CIV LF at $z\sim1.53$ is well fit by a power-law, quasar-like LF. We find that the brightest UV sources ($M_{UV}

AB - Recently, the CIII] and CIV emission lines have been observed in galaxies in the early Universe ($z>5$), providing new ways to measure their redshift and study their stellar populations and AGN. We explore the first blind CII], CIII] and CIV survey ($z\sim0.68, 1.05, 1.53$, respectively) presented in Stroe et al. (2017). We derive luminosity functions (LF) and study properties of CII], CIII] and CIV line emitters through comparisons to the LFs of H$\alpha$ and Ly$\alpha$ emitters, UV selected star forming (SF) galaxies and quasars at similar redshifts. The CII] LF at $z\sim0.68$ is equally well described by a Schechter or a power-law LF, characteristic of a mixture of SF and AGN activity. The CIII] LF ($z\sim1.05$) is consistent to a scaled down version of the Schechter H$\alpha$ and Ly$\alpha$ LF at their redshift, indicating a SF origin. In stark contrast, the CIV LF at $z\sim1.53$ is well fit by a power-law, quasar-like LF. We find that the brightest UV sources ($M_{UV}

KW - astro-ph.GA

KW - astro-ph.CO

U2 - 10.1093/mnras/stx1713

DO - 10.1093/mnras/stx1713

M3 - Journal article

VL - 471

SP - 2575

EP - 2586

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -