The LF and SFR density evolution for 0.4 < z < 2.2, as seen through a completely self-consistent analysis using HiZELS. The measurements are obtained at z = 0.4, 0.84, 1.47 and 2.23, correcting for 1 mag extinction at Hα. Columns present the redshift, break of the LF, L*Hα, normalization (ϕ*Hα) and faint-end slope (α) of the Hα LF. The two right-hand columns present the SFR density at each redshift based on integrating the LF down to ≈3 M⊙ yr−1 or 41.6 (in log erg s−1) and for a full integration. SFR densities include a correction for AGN contamination of 10 per cent at z = 0.4 and 0.84 (see Garn et al. 2010) and 15 per cent at both z = 1.47 and 2.23. Errors on the faint-end slope α are the 1σ deviation from the best fit, when fitting the three parameters simultaneously. As α is very well constrained at all redshifts, and shown not to evolve significantly, L*Hα and ϕ*Hα are obtained by fixing α = −1.6, and the 1σ errors on L*Hα and ϕ*Hα are derived from such fits (with fixed α).
Epoch . | L*Hα . | ϕ*Hα . | αHα . | log |$\rho _{ L_{{\rm H}\alpha }}$| (41.6) . | log |$\rho _{ L_{{\rm H}\alpha }}$| . | ρSFRHα 41.6 . | ρSFRHα (All) . |
---|---|---|---|---|---|---|---|
(z) . | (erg s−1) . | (Mpc−3) . | . | (erg s−1 Mpc−3) . | (erg s−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . |
0.40 ± 0.01 | 41.95+ 0.47− 0.12 | − 3.12+ 0.10− 0.34 | − 1.75+ 0.12− 0.08 | 38.99+ 0.19− 0.22 | 39.55+ 0.22− 0.22 | 0.008+ 0.002− 0.002 | 0.03+ 0.01− 0.01 |
0.84 ± 0.02 | 42.25+ 0.07− 0.05 | − 2.47+ 0.07− 0.08 | − 1.56+ 0.13− 0.14 | 39.75+ 0.12− 0.05 | 40.13+ 0.24− 0.21 | 0.040+ 0.007− 0.006 | 0.10+ 0.01− 0.02 |
1.47 ± 0.02 | 42.56+ 0.06− 0.05 | − 2.61+ 0.08− 0.09 | − 1.62+ 0.25− 0.29 | 40.03+ 0.08− 0.07 | 40.29+ 0.16− 0.14 | 0.07+ 0.01− 0.01 | 0.13+ 0.02− 0.02 |
2.23 ± 0.02 | 42.87+ 0.08− 0.06 | − 2.78+ 0.08− 0.09 | − 1.59+ 0.12− 0.13 | 40.26+ 0.01− 0.02 | 40.44+ 0.03− 0.03 | 0.13+ 0.01− 0.01 | 0.21+ 0.02− 0.03 |
Epoch . | L*Hα . | ϕ*Hα . | αHα . | log |$\rho _{ L_{{\rm H}\alpha }}$| (41.6) . | log |$\rho _{ L_{{\rm H}\alpha }}$| . | ρSFRHα 41.6 . | ρSFRHα (All) . |
---|---|---|---|---|---|---|---|
(z) . | (erg s−1) . | (Mpc−3) . | . | (erg s−1 Mpc−3) . | (erg s−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . |
0.40 ± 0.01 | 41.95+ 0.47− 0.12 | − 3.12+ 0.10− 0.34 | − 1.75+ 0.12− 0.08 | 38.99+ 0.19− 0.22 | 39.55+ 0.22− 0.22 | 0.008+ 0.002− 0.002 | 0.03+ 0.01− 0.01 |
0.84 ± 0.02 | 42.25+ 0.07− 0.05 | − 2.47+ 0.07− 0.08 | − 1.56+ 0.13− 0.14 | 39.75+ 0.12− 0.05 | 40.13+ 0.24− 0.21 | 0.040+ 0.007− 0.006 | 0.10+ 0.01− 0.02 |
1.47 ± 0.02 | 42.56+ 0.06− 0.05 | − 2.61+ 0.08− 0.09 | − 1.62+ 0.25− 0.29 | 40.03+ 0.08− 0.07 | 40.29+ 0.16− 0.14 | 0.07+ 0.01− 0.01 | 0.13+ 0.02− 0.02 |
2.23 ± 0.02 | 42.87+ 0.08− 0.06 | − 2.78+ 0.08− 0.09 | − 1.59+ 0.12− 0.13 | 40.26+ 0.01− 0.02 | 40.44+ 0.03− 0.03 | 0.13+ 0.01− 0.01 | 0.21+ 0.02− 0.03 |
The LF and SFR density evolution for 0.4 < z < 2.2, as seen through a completely self-consistent analysis using HiZELS. The measurements are obtained at z = 0.4, 0.84, 1.47 and 2.23, correcting for 1 mag extinction at Hα. Columns present the redshift, break of the LF, L*Hα, normalization (ϕ*Hα) and faint-end slope (α) of the Hα LF. The two right-hand columns present the SFR density at each redshift based on integrating the LF down to ≈3 M⊙ yr−1 or 41.6 (in log erg s−1) and for a full integration. SFR densities include a correction for AGN contamination of 10 per cent at z = 0.4 and 0.84 (see Garn et al. 2010) and 15 per cent at both z = 1.47 and 2.23. Errors on the faint-end slope α are the 1σ deviation from the best fit, when fitting the three parameters simultaneously. As α is very well constrained at all redshifts, and shown not to evolve significantly, L*Hα and ϕ*Hα are obtained by fixing α = −1.6, and the 1σ errors on L*Hα and ϕ*Hα are derived from such fits (with fixed α).
Epoch . | L*Hα . | ϕ*Hα . | αHα . | log |$\rho _{ L_{{\rm H}\alpha }}$| (41.6) . | log |$\rho _{ L_{{\rm H}\alpha }}$| . | ρSFRHα 41.6 . | ρSFRHα (All) . |
---|---|---|---|---|---|---|---|
(z) . | (erg s−1) . | (Mpc−3) . | . | (erg s−1 Mpc−3) . | (erg s−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . |
0.40 ± 0.01 | 41.95+ 0.47− 0.12 | − 3.12+ 0.10− 0.34 | − 1.75+ 0.12− 0.08 | 38.99+ 0.19− 0.22 | 39.55+ 0.22− 0.22 | 0.008+ 0.002− 0.002 | 0.03+ 0.01− 0.01 |
0.84 ± 0.02 | 42.25+ 0.07− 0.05 | − 2.47+ 0.07− 0.08 | − 1.56+ 0.13− 0.14 | 39.75+ 0.12− 0.05 | 40.13+ 0.24− 0.21 | 0.040+ 0.007− 0.006 | 0.10+ 0.01− 0.02 |
1.47 ± 0.02 | 42.56+ 0.06− 0.05 | − 2.61+ 0.08− 0.09 | − 1.62+ 0.25− 0.29 | 40.03+ 0.08− 0.07 | 40.29+ 0.16− 0.14 | 0.07+ 0.01− 0.01 | 0.13+ 0.02− 0.02 |
2.23 ± 0.02 | 42.87+ 0.08− 0.06 | − 2.78+ 0.08− 0.09 | − 1.59+ 0.12− 0.13 | 40.26+ 0.01− 0.02 | 40.44+ 0.03− 0.03 | 0.13+ 0.01− 0.01 | 0.21+ 0.02− 0.03 |
Epoch . | L*Hα . | ϕ*Hα . | αHα . | log |$\rho _{ L_{{\rm H}\alpha }}$| (41.6) . | log |$\rho _{ L_{{\rm H}\alpha }}$| . | ρSFRHα 41.6 . | ρSFRHα (All) . |
---|---|---|---|---|---|---|---|
(z) . | (erg s−1) . | (Mpc−3) . | . | (erg s−1 Mpc−3) . | (erg s−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . | (M⊙ yr−1 Mpc−3) . |
0.40 ± 0.01 | 41.95+ 0.47− 0.12 | − 3.12+ 0.10− 0.34 | − 1.75+ 0.12− 0.08 | 38.99+ 0.19− 0.22 | 39.55+ 0.22− 0.22 | 0.008+ 0.002− 0.002 | 0.03+ 0.01− 0.01 |
0.84 ± 0.02 | 42.25+ 0.07− 0.05 | − 2.47+ 0.07− 0.08 | − 1.56+ 0.13− 0.14 | 39.75+ 0.12− 0.05 | 40.13+ 0.24− 0.21 | 0.040+ 0.007− 0.006 | 0.10+ 0.01− 0.02 |
1.47 ± 0.02 | 42.56+ 0.06− 0.05 | − 2.61+ 0.08− 0.09 | − 1.62+ 0.25− 0.29 | 40.03+ 0.08− 0.07 | 40.29+ 0.16− 0.14 | 0.07+ 0.01− 0.01 | 0.13+ 0.02− 0.02 |
2.23 ± 0.02 | 42.87+ 0.08− 0.06 | − 2.78+ 0.08− 0.09 | − 1.59+ 0.12− 0.13 | 40.26+ 0.01− 0.02 | 40.44+ 0.03− 0.03 | 0.13+ 0.01− 0.01 | 0.21+ 0.02− 0.03 |
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