Abundance analysis of six LMC F supergiants
نویسندگان
چکیده
منابع مشابه
Radiation driven wind models for A, F and G supergiants
We investigate the effects of radiation pressure on the atmospheres of A, F and G-supergiants by calculating hydrodynamical model atmospheres for stars with 5500 ≤ Teff ≤ 9500 K. In the subsonic part of the wind, the radiation pressure by continuum and lines from Kurucz (1992) is taken into account. In the supersonic part of the wind, the radiation pressure is expressed in terms of the force mu...
متن کاملa comparative analysis of the marginal microleakages of two pit and fissure sealans, conseal-f and conseal clear
چکیده ندارد.
15 صفحه اولMass-loss rates and luminosity functions of dust-enshrouded AGB stars and red supergiants in the LMC
A radiative transfer code is used to model the spectral energy distributions of 57 mass-losing Asymptotic Giant Branch (AGB) stars and red supergiants (RSGs) in the Large Magellanic Cloud (LMC) for which ISO spectroscopic and photometric data are available. As a result we derive mass-loss rates and bolometric luminosities. A gap in the luminosity distribution around Mbol = −7.5 mag separates AG...
متن کاملCarbon , nitrogen , oxygen and lithium abundances of six cool supergiants in the SMC ?
Carbon, nitrogen and oxygen abundances were derived from high-resolution spectra of 6 cool supergiants of the Small Magellanic Cloud. Oxygen-to-iron ratios (mean value [O/Fe] ≈–0.18 dex) are found to be similar to those found in young objects in the LMC and the Galaxy. This result is discussed in terms of chemical evolution. A mean deficiency of the carbon-to-iron ratio of [C/Fe] ≈–0.3 dex and ...
متن کاملChemical composition of six K supergiants in the Small Magellanic Cloud
A sample of six SMC cool stars (K supergiants) are analysed by high resolution spectroscopy in order to investigate their chemical content, which should reflect that of the current interstellar medium within the SMC. The abundance of Na, Al, α-elements, Fe peak and heavy elements are derived through an LTE analysis of the lines, compared to a Galactic ”standard” (the well-studied K giant Arctur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1991
ISSN: 0074-1809
DOI: 10.1017/s0074180900200995