Skutki kasaty z 1864 r. dla zakonu marianów
نویسندگان
چکیده
منابع مشابه
The Chemical Uniformity of High Z Dla Protogalaxies
We investigate chemical abundance variations along the sightlines through 13 damped Lyα systems (DLA). We introduce a technique designed to identify abundance variations in multiple velocity bins along the sightlines and perform a series of Monte-Carlo simulations to derive quantitative limits and values. The majority of these DLA have very uniform relative abundances: 95% c.l. upper limits of ...
متن کاملR/Z Index Theory
We define topological and analytic indices in R/Z K-theory and show that they are equal.
متن کاملSimulating extremely metal - poor gas and DLA metal content at redshift z ≃ 7
We present the first theoretical study of metals in damped-Lyα (DLA) systems at redshift z ≃ 7. The features of cold, primordial gas are studied by means of N-body, hydro, chemistry simulations, including atomic and molecular non-equilibrium chemistry, cooling, star formation for population III and population II-I regimes, stellar evolution, cosmic metal spreading according to proper yields (fo...
متن کاملProbing feedback in protogalaxies : multiphase gas in a DLA at z ≈ 2 . 4
We investigate the physical processes occurring in the multiphase gas of a damped Lyα absorber (DLA). We base our analysis on a high-quality Keck High-Resolution Echelle Spectrometer (HIRES) spectrum of the QSO J1211+0422 in which a DLA is detected at z ! 2.377. There is little contamination of the high-ion (O VI, N V, C IV, Si IV) absorption, allowing us to explore the properties of the highly...
متن کاملVelocity - metallicity correlation for high - z DLA galaxies : Evidence for a mass - metallicity relation ? ⋆
We used our database of VLT-UVES quasar spectra to build up a sample of 70 Damped Lyman-α (DLA) or strong sub-DLA systems with total neutral hydrogen column densities of log N(H ) > ∼ 20 and redshifts in the range 1.7 < z abs < 4.3. For each of the systems, we measured in an homogeneous manner the metallicities relative to Solar, [X/H] (with X = Zn, or S or Si), and the velocity widths of low-...
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: Prawo Kanoniczne
سال: 1977
ISSN: 2353-8104,0551-911X
DOI: 10.21697/pk.1977.20.3-4.07