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September 10, 2025Astronomy and Astrophysics

Radial dependence of the ratio of FeII to MgII equivalent widths in emission-line galaxies

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Authors

JLJing LiSouth China Agricultural University RLRui-Jing LuGuangxi University WHWeirong HuangNanchang University

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Implication

Analysis shows that the equivalent width ratio of metal lines varies with impact parameter in emission-line galaxies, implying insights into circumgalactic medium dynamics.

Key Points

The equivalent width ratio of metal lines decreases with increasing impact parameter in emission-line galaxies.
R was found to vary as R ∝ (-0.64) log(d_pc), indicating a significant dependency on geometry.
Spectral stacking methods were employed to derive median composite spectra from a dataset of quasar-emission-line-galaxy pairs.
These findings highlight the role of the circumgalactic medium in regulating galaxy evolution and metal distribution.

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Li et al. (2025) studied this question.

synapsesocial.com/papers/68c1a78854b1d3bfb60e1306 https://doi.org/10.1051/0004-6361/202554887

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Implication

Analysis shows that the equivalent width ratio of metal lines varies with impact parameter in emission-line galaxies, implying insights into circumgalactic medium dynamics.

Radial dependence of the ratio of FeII to MgII equivalent widths in emission-line galaxies

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Member takes

Implication

Key Points

Cite This Study

Radial dependence of the ratio of FeII to MgII equivalent widths in emission-line galaxies

Discussion

Member takes

Implication

Key Points

Cite This Study

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