VLT/UVES constraints on the carbon isotope ratio $^\mathsf{12}$C/$^\mathsf{13}$C at z = 1.15 toward the quasar HE 0515–4414
نویسندگان
چکیده
منابع مشابه
Vlt/uves Constraints on the Carbon Isotope Ratio
We analyzed the C i lines associated with the damped Lyα system observed at zabs = 1.15 in the spectrum of HE 0515–4414 to derive the C/C ratio. The spectrum was obtained by means of the UV-Visual Echelle Spectrograph (UVES) at the ESO Very Large Telescope (VLT). The obtained lower limit C/C > 80 (2σ C.L.) shows for the first time that the abundance of C in the extragalactic intervening clouds ...
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Weanalysed CN red system (∼8000 Å) andC2 Swan system (∼4700 Å) to know carbon isotope ratios (12C/13C) for carbon stars in the Galactic halo, named CH stars. The isotope ratios are obtained for 6 CH stars by the curve-of-growth analysis of the isolated 12CN and 13CN lines. In this analysis, we compared directly 12CN and 13CN lines of similar intensities (iso-intensity method), and the resulting...
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قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200600001