Relations between abundance characteristics and rotation velocity for star-forming MaNGA galaxies
We derive rotation curves, surface brightness profiles, and oxygen abundance distributions for 147 late-type galaxies using the publicly available spectroscopy obtained by the MaNGA survey. Changes of the central oxygen abundance (O/H)0, the abundance at the optical radius (O/H)R25, and the abundanc...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
19 March 2019
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| In: |
Astronomy and astrophysics
Year: 2019, Jahrgang: 623 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201834239 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1051/0004-6361/201834239 Verlag, Volltext: https://www.aanda.org/articles/aa/abs/2019/03/aa34239-18/aa34239-18.html 
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| Verfasserangaben: | L.S. Pilyugin, E.K. Grebel, I.A. Zinchenko, Y.A. Nefedyev, and J.M. Vílchez |
MARC
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| 245 | 1 | 0 | |a Relations between abundance characteristics and rotation velocity for star-forming MaNGA galaxies |c L.S. Pilyugin, E.K. Grebel, I.A. Zinchenko, Y.A. Nefedyev, and J.M. Vílchez |
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| 520 | |a We derive rotation curves, surface brightness profiles, and oxygen abundance distributions for 147 late-type galaxies using the publicly available spectroscopy obtained by the MaNGA survey. Changes of the central oxygen abundance (O/H)0, the abundance at the optical radius (O/H)R25, and the abundance gradient with rotation velocity Vrot were examined for galaxies with rotation velocities from 90 km s−1 to 350 km s−1. We find that each relation shows a break at . The central (O/H)0 abundance increases with rising Vrot and the slope of the (O/H)0-Vrot relation is steeper for galaxies with.The mean scatter of the central abundances around this relation is 0.053 dex. The relation between the abundance at the optical radius of a galaxy and its rotation velocity is similar; the mean scatter in abundances around this relation is 0.081 dex. The radial abundance gradient expressed in dex/kpc flattens with the increase of the rotation velocity. The slope of the relation is very low for galaxies with. The abundance gradient expressed in dex/R25 is roughly constant for galaxies with, flattens towards, and then again is roughly constant for galaxies with. The change of the gradient expressed in terms of dex/hd (where hd is the disc scale length), in terms of dex/Re, d (where Re, d is the disc effective radius), and in terms of dex/Re, g (where Re, g is the galaxy effective radius) with rotation velocity is similar to that for gradient in dex/R25. The relations between abundance characteristics and other basic parameters (stellar mass, luminosity, and radius) are also considered. | ||
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