SIMBAD references

2002ApJ...565...63I - Astrophys. J., 565, 63-77 (2002/January-3)

Fe II/Mg II emission-line ratios of QSOs within 0 < z < 5.3.

IWAMURO F., MOTOHARA K., MAIHARA T., KIMURA M., YOSHII Y. and DOI M.

Abstract (from CDS):

Near-infrared spectra of 13 QSOs located between 4.4<z<5.3 were obtained by the OH-airglow suppression spectrograph mounted on the Subaru telescope. The Fe II/Mg II emission-line ratios of the QSOs at various redshifts were examined by applying the same fitting algorithm to the present data together with published or archived spectra. We found a trend of a decreasing Fe II/Mg II ratio from z∼5 to 1.5, almost independent of their luminosities. We also confirmed the Baldwin effect on the Mg II emission line.

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Journal keyword(s): Galaxies: Active - Infrared: General - Galaxies: Quasars: Emission Lines - Galaxies: Quasars: General

Simbad objects: 54

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