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Information × Registration Number 0219U000242, 0118U004583 , R & D reports Title Data processing of the digital spectral survey MaNGA popup.stage_title Head Zinchenko Igor Andriyovich, Registration Date 23-01-2019 Organization Main Astronomical Observatory popup.description2 For a large sample of galaxies we constructed maps for the distribution of physical parameters: the intensity of the emission lines, the velocity fields (and dispersion of velocities) of gas and stars, the abundance of oxygen and nitrogen in the interstellar medium. In 2018, both software packages were adapted to work with MetalTHINGS project data. Also this year, the etalTHINGS project data processing was started, in which the distribution of oxygen abundance and emission intensities for NGC 7331 and NGC 1569 galaxies were obtained with high resolution. We calculate the effective temperature (Teff) of ionizing star(s), oxygen abundance of the gas phase (O/H), and the ionization parameter U for a sample of H II regions located in the disks of 59 spiral galaxies in the 0.005 < z < 0.03 redshift range. Most of the galaxies in our sample (? 70 %) shows positive Teff radial gradients even though some them exhibit negative or flat ones. The median value of the Teff radial gradient is 0.762 kK/R25. We find that radial gradients of both logU and Teff depend on the oxygen abundance gradient, in the sense that the gradient of logU increases as log(O/H) gradient increases while there is an anti-correlation between the gradient of Teff and the oxygen abundance gradient. Moreover, galaxies with flat oxygen abundance gradients tend to have flat logU and Teff gradients as well. Although our results are in agreement with the idea of the existence of positive Teff gradients along the disk of the majority of spiral galaxies, this seems not to be an universal property for these objects. Product Description popup.authors Зінченко І.А. Пілюгін Л.С. Соболенко М.О. popup.nrat_date 2020-04-02 Close