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Resolving gas-phase metallicity gradients of 0.1 ≲ z ≲ 0.8 galaxies

Published online by Cambridge University Press:  03 March 2020

David Carton*
Affiliation:
Univ Lyon, Univ Lyon1, Ens de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon, UMR5574, 69230, Saint-Genis-Laval, France email: [email protected] Leiden Observatory, Leiden University, PO Box 9513, 2300 RA, Leiden, The Netherlands
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Abstract

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We present gas-phase metallicity gradients of 84 star-forming galaxies between 0.08 < z < 0.84. Using the galaxies with reliably determined metallicity gradients, we measure the median metallicity gradient to be negative ( $\[ - 0.039_{ - 0.009}^{ + 0.007}{\kern 1pt} dex/kpc\]$ ). Underlying this, however, is significant scatter: (8 ± 3)% [7] of galaxies have significantly positive metallicity gradients, (38 ± 5)% [32] have significantly negative gradients, (31 ± 5)% [26] have gradients consistent with being flat. (The remaining (23 ± 5)% [19] have unreliable gradient estimates.)

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

References

Carton, D., Brinchmann, J., Contini, T., Epinat, B., Finley, H., Richard, J., Patrcio, V., Schaye, J., Nanayakkara, T. Weilbacher, P. M., Wisotzki, L. 2018, MNRAS 478, 4293 CrossRefGoogle Scholar
Queyrel, J., Contini, T., Kissler-Patig, M., Epinat, B., Amram, P., Garilli, B., Le Fèvre, O., Moultaka, J., Paioro, L., Tasca, L., Tresse, L., Vergani, D., López-Sanjuan, C., Perez-Montero, E. 2012, A&A 539, A93 Google Scholar