Galaxy Evolution in a Pilot Survey up to 𝑧=1 and CDM Halos

Table 7

D(4000) and equivalent widths of [OII] and H𝛿 of average “blue” emission-line galaxies. Values marked (*) have H𝛿 both in absorption and in emission. In those cases, EQW(H𝛿) was measured by fitting a profile to remove the emission component. Objects for which 𝐻𝛿 was not visible in emission (in the ⟨𝑧⟩=0.43 bin) may still have the bottom of the absorption profile contaminated with emission. The S/N ratios of the continuum in the wavelength range 4150–4250 Å are given in the last column.

⟨𝑧⟩	D(4000)	EQW([OII])	EQW(H𝛿)	S/N
0.29	1.11±0.01	34.3±0.5	−4±0.5 (*)	23
0.415	1.09±0.01	32.3±0.5	−2.64±0.08	40
⟨0.43⟩	1.12±0.01	27.9±0.4	−2.84±0.08	49
0.447	1.18±0.01	22.3±0.6	−3.60±0.07	42
0.63	1.07±0.015	40.8±0.7	−3.5±1 (*)	15
⟨0.65⟩	1.09±0.01	30.3±0.7	−5±0.5 (*)	28
0.68	1.11±0.015	21.3±0.8	−5±0.5 (*)	32
0.82	1.04±0.02	53.1±0.8	−6±0.5 (*)	18
⟨0.9⟩	1.02±0.015	53.8±0.8	−5.5±0.5 (*)	23
0.99	1.02±0.02	58.8±0.9	−5±0.5 (*)	12