A Coherent Study of Emission Lines from Broad-Band Photometry: Specific Star-Formation Rates and [OIII]/H{\beta} Ratio at 3 < z < 6

Autor: Faisst, A. L., Capak, P., Hsieh, B. C., Laigle, C., Salvato, M., Tasca, L., Cassata, P., Davidzon, I., Ilbert, O., Fevre, O. Le, Masters, D., McCracken, H. J., Steinhardt, C., Silverman, J. D., De Barros, S., Hasinger, G., Scoville, N. Z.
Rok vydání: 2016
Předmět:
Druh dokumentu: Working Paper
DOI: 10.3847/0004-637X/821/2/122
Popis: We measure the H{\alpha} and [OIII] emission line properties as well as specific star-formation rates (sSFR) of spectroscopically confirmed 33 cannot be fully explained in a picture of cold accretion driven growth. We find a progressively increasing [OIII]{\lambda}5007/H{\beta} ratio out to z~6, consistent with the ratios in local galaxies selected by increasing H{\alpha} 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.
Comment: 18 pages, 11 figures, 3 tables
Databáze: arXiv
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