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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Elemental abundances in the centre of the Galactic nuclear disc

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Kovtyukh, V. V. [1, 2] ; Andrievsky, S. M. [1, 2, 3] ; Martin, R. P. [4, 5] ; Korotin, S. A. [6] ; Lepine, J. R. D. [7] ; Maciel, W. J. [7] ; Keir, L. E. [1] ; Panko, E. A. [8]
Total Authors: 8
[1] Odessa Natl Univ, Astron Observ, Shevchenko Pk, UA-65014 Odessa - Ukraine
[2] Isaac Newton Inst Chile, Odessa Branch, Shevchenko Part, UA-65014 Odessa - Ukraine
[3] Univ Paris Diderot, Observ Paris Meudon, CNRS, GEPI, F-92125 Meudon - France
[4] Univ Hawaii Hilo, Dept Phys & Astron, Hilo, HI 96720 - USA
[5] Univ Hawaii, Infrared Telescope Facil, Honolulu, HI 96822 - USA
[6] Crimean Astrophys Observ, Nauchny 298409, Republic Of Cri - Russia
[7] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo, SP - Brazil
[8] Odessa Natl Univ, Dept Theoret Phys & Astron, 42 Pasteur Str, Odessa - Ukraine
Total Affiliations: 8
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 489, n. 2, p. 2254-2260, OCT 2019.
Web of Science Citations: 0

We have made the first attempt to derive the chemical properties of the Galactic disc at its very central part using high-resolution infrared spectroscopic observations of four classical Cepheids. These stars are located at Galactocentric distances smaller than 1 kpc. All investigated stars show near-to-solar elemental abundances. By combining these new data with our previous studies, our results suggest that the radial distribution of iron abundance on a logarithmic scale gradually increases from the outskirts of the Galactic disc to Galactocentric distances of about 2-4 kpc. There, it reaches a maximal value of about +0.4 dex, and then declines sharply to about the solar value at the Galactic Centre. (AU)

FAPESP's process: 10/18835-3 - Planetary nebulae, stars and chemical evolution of stellar systems
Grantee:Roberto Dell'Aglio Dias da Costa
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/04562-7 - IAU symposium 343: Why Galaxies care about AGB stars
Grantee:Walter Junqueira Maciel
Support type: Research Grants - Meeting - Abroad