A COHERENT STUDY OF EMISSION LINES FROM BROADBAND PHOTOMETRY: SPECIFIC STAR FORMATION RATES AND [O iii]/Hβ RATIO AT 3 < z < 6
A COHERENT STUDY OF EMISSION LINES FROM BROADBAND PHOTOMETRY: SPECIFIC STAR FORMATION RATES AND [O iii]/Hβ RATIO AT 3 < z < 6
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DOI：
10.3847/0004-637x/821/2/122
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发表时间：
2016-01
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通讯作者：
A. Faisst;P. Capak;B. Hsieh;C. Laigle;M. Salvato;L. Tasca;P. Cassata;I. Davidzon;I. Davidzon;O. Ilbert;O. Fèvre;D. Masters;H. McCracken;C. Steinhardt;J. Silverman;S. D. Barros;G. Hasinger;N. Scoville
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作者：
A. Faisst;P. Capak;B. Hsieh;C. Laigle;M. Salvato;L. Tasca;P. Cassata;I. Davidzon;I. Davidzon;O. Ilbert;O. Fèvre;D. Masters;H. McCracken;C. Steinhardt;J. Silverman;S. D. Barros;G. Hasinger;N. Scoville
我们测量的Hα和[O III]发射线的属性，以及特定的星星形成率（sSFR）的光谱确认3 - 3不能完全解释的图片中的增长驱动的冷吸积。我们发现[O iii]λ5007/Hβ比值逐渐增加到z = 6，与通过增加Hα EW选择的局部星系中的比值一致（即，sSFR）。这表明了使用“本地高Z类似物”来研究星系在再电离时期的光谱特性和关系的潜力。
We measure the Hα and [O iii] emission line properties as well as specific star formation rates (sSFRs) of spectroscopically confirmed 3 3 cannot be fully explained in a picture of growth driven by cold accretion. We find a progressively increasing [O iii]λ5007/Hβ ratio out to z ∼ 6, consistent with the ratios in local galaxies selected by increasing Hα EW (i.e., sSFR). This demonstrates the potential of using “local high-z analogs” to investigate the spectroscopic properties and relations of galaxies in the re-ionization epoch.