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Browsing by Author "Grebel E."

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Breaks in surface brightness profiles and radial abundance gradients in the discs of spiral galaxies

Pilyugin L.; Grebel E.; Zinchenko I.; Nefedyev Y.; Vílchez J. (2017)

© ESO, 2017. We examine the relation between breaks in the surface brightness profiles and radial abundance gradients within the optical radius in the discs of 134 spiral galaxies from the CALIFA survey. The distribution ...
New calibrations for abundance determinations in HII regions

Pilyugin L.; Grebel E. (2016)

© 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.Simple relations for deriving the oxygen abundance in HII regions with intensities of the three strong emission lines R2, ...
ON the INFLUENCE of MINOR MERGERS on the RADIAL ABUNDANCE GRADIENT in DISKS of MILKY-WAY-LIKE GALAXIES

Zinchenko I.; Berczik P.; Grebel E.; Pilyugin L.; Just A. (2015)

© 2015. The American Astronomical Society. All rights reserved. We investigate the influence of stellar migration caused by minor mergers (mass ratio from 1:70 to 1:8) on the radial distribution of chemical abundances in ...
On the influence of the environment on galactic chemical abundances

Pilyugin L.; Grebel E.; Zinchenko I.; Nefedyev Y.; Mattsson L. (2017)

© 2016 The Authors. We examine the influence of the environment on the chemical abundances of late-type galaxies with masses of 10 9.1 -10 11 M⊙ using data from the Sloan Digital Sky Survey. We find that the environmental ...
On the radial abundance gradients in discs of irregular galaxies

Pilyugin L.; Grebel E.; Zinchenko I. (2015)

© 2015 The Authors. We determine the radial abundance distributions across the discs of 14 irregular galaxies of the types Sm and Im (morphological T types 9 and 10) as traced by their HII regions. The oxygen and nitrogen ...
Oxygen abundance distributions in six late-type galaxies based on SALT spectra of H?II regions

Zinchenko I.; Kniazev A.; Grebel E.; Pilyugin L. (2015)

© ESO 2015. Spectra of 34 H?II regions in the late-type galaxies NGC 1087, NGC 2967, NGC 3023, NGC 4030, NGC 4123, and NGC 4517A were observed with the South African Large Telescope (SALT). In all 34 H?II regions, oxygen ...
Oxygen abundance maps of CALIFA galaxies

Zinchenko I.; Pilyugin L.; Grebel E.; Sánchez S.; Vílchez J. (2016)

© 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.We construct maps of the oxygen abundance distribution across the discs of 88 galaxies using Calar Alto Legacy Integral ...
Relations between abundance characteristics and rotation velocity for star-forming MaNGA galaxies

Pilyugin L.; Grebel E.; Zinchenko I.; Nefedyev Y.; Vílchez J. (2019)

© ESO 2019. 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 ...

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Browsing by Author "Grebel E."

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