Gas metallicity of polar ring galaxies as a probe of their formation scenario
Abstract
We estimated oxygen abundance of polar structures in the sample of 15 polar ring galaxies using the long-slit spectral observations made with 6-m SAO RAS telescope. The measured values of the gas metallicity are sub-solar and consistent with the luminosity in B band for each galaxy from our sample. We did not detect a metal-poor gas in their disk. The results of this study were used to constrain the formation history of polar components in each galaxies. We ruled out scenario of the polar rings formation due to cold accretion from cosmic filaments for these galaxies.
- Publication:
-
Chemical Abundances in Gaseous Nebulae
- Pub Date:
- July 2018
- Bibcode:
- 2018cagn.conf..161E
- Keywords:
-
- ISM:abundances;
- galaxies: abundances;
- H II Regions