ABOUT CHEMICAL COMPOSITION OF SUPERGIANT PMMR145 IN SMALL MAGELLANIC CLOUD. OSMIUM.

Автор(и)

  • V. F. Gopka Astronomical observatory, Odessa National University, T.G.Shevchenko Park, Odessa, 65014, Ukraine, Ukraine
  • A. V. Shavrina Main Astronomical Observatory of NAS of Ukraine, Zabolotnogo str. 27, Kyiv, 03680, Ukraine, Ukraine
  • S. V. Vasilyeva Astronomical observatory, Odessa National University, T.G.Shevchenko Park, Odessa, 65014, Ukraine, Ukraine
  • S. M. Andrievsky Astronomical observatory, Odessa National University, T.G.Shevchenko Park, Odessa, 65014, Ukraine, Ukraine

DOI:

https://doi.org/10.18524/1810-4215.2012.25.83347

Ключові слова:

Small Magellanic Cloud, star, evolution, supergiants, PMMR145.

Анотація

The abundance analysis of six Ksupergiants of the Small Magellanic Cloud (Hill 1997) showed that the heavier elements (La, Ce, Nd, Eu) have the excess relative to iron [El/Fe]=+0.4 dex, on average, for the sample of five stars (PMMR23, PMMR27, PMMR48, PMMR102, PMMR145). We made the identification of spectral lines in the spectrum of PMMR145 based on the comparison of synthetic and observed spectra. The absorption lines of elements heavier than lanthanides including osmium were identified and abundance of osmium was found ([Os/Fe]=0.59 dex).

Посилання

Hill V.: 1997, A&A, 324, 435.

Klus H., Bartlett E.S., Bird A.J. et al.: 2012, MNRAS, 324, 435.

Novara G., La Palombara N., Megeghetti S. et al.: 2012, A&A, 532, 8.

Gopka V.F., Yushchenko A.V., Andrievsky S.M. et al.: 2005, IAUS, 228, 535.

Gopka V.F., Vasilieva S.V., Yushchenko A.V. et al.: 2007, OAP, 20, 58.

Tsymbal V.: 1996, Model Atmospheres and Spectrum Synthesis, ASP Conf.Ser., ed. Saul J.Adelman, Friedrich Kupka, Warner W. Weiss, 108, 198.

Kurucz R.: 1993, CD-ROMs 1-23.

Wanajo S., Nomoto K., Iwamoto N. et al.: 2006, ApJ, 636, 842.

Asplund M., Greveese M., Sauval A.J. et al.: 2009, ARAA, 47, 481.

##submission.downloads##

Опубліковано

2012-11-16

Номер

Розділ

Статті