DOI: https://doi.org/10.18524/1810-4215.2017.30.114274

MOLYBDENUM AND RUTHENIUM ABUNDANCES IN COOL STARS OF THE GALACTIC DISC

T. I. Gorbaneva, T. V. Mishenina

Анотація


We  revise  the  molybdenum  and  ruthenium abundances in  FGK stars with metallicities  ranging from −1.0 < [Fe/H] < +0.3. The observed stars belong to the  substructures  of  the  Galaxy.  The  observations  were conducted using the 1.93 m telescope at Observatoire de Haute-Provence (OHP, France) equipped with the echelle type spectrographs ELODIE and SOPHIE.  The results are based  on  analyses  of  spectra  that  have  a  typical  S/N  ~ 100-300 and a resolution of 42 000. These estimates were obtained  using  synthetic  spectra  computed  with    LTE  model atmosphere. 


Ключові слова


stars abundances; stars: late-type; Galaxy: disc; Galaxy: evolution

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Посилання


Jones S., Ritter C., Herwig F. et al.: 2016, MNRAS, 455, 3848.

Galazutdinov G.A.: 1992, Preprint SAO RAS, n92.

Katz D., Soubiran C., Cayrel R. et al.: 1998, A&A, 338, 151.

Kovtyukh V., Soubiran C., Belik S. et al.: 2003, A&A, 411, 559.

Mishenina T., Pignatari M., Korotin S. et al.: 2013, A&A, 552, 128.

Peterson R.: 2011, ApJ, 742, id.21.

Tsymbal V.V.: 1996, ASP Conf. Ser., 108, 198.




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