Buscar
Mostrando ítems 51-60 de 38759
On the central abundances of Active Galactic Nuclei and Star-forming Galaxies
(Oxford University Press, 2015-03)
We examine the relation between oxygen abundances in the narrow-line regions (NLRs) of active galactic nuclei (AGNs) estimated from the optical emission lines through the strong-line method (the theoretical calibration of ...
Both accurate and precise gf-values for Fe II lines
(EDP SCIENCES S A, 2009)
We present a new set of oscillator strengths for 142 Fe II lines in the wavelength range 4000-8000 angstrom. Our gf-values are both accurate and precise, because each multiplet was globally normalized using laboratory data ...
The Gaia-ESO Survey: Galactic evolution of lithium at high metallicity
(European Southern Observatory, 2020)
Context. Reconstructing the Galactic evolution of lithium (Li) is the main tool used to constrain the source(s) of Li enrichment in the Galaxy. Recent results have suggested a decline in Li at supersolar metallicities, ...
Chemical abundance analysis of the Be star HD 171054
(ELSEVIER SCIENCE BV, 2011)
In this work the results of a spectroscopic study of the southern field narrow-line Be star HD 171054 are presented. High dispersion and signal-to-noise ratio spectra allowed the estimation of the fundamental photospheric ...
Abundance and distribution of the Panama brief squid, Lolliguncula panamensis (Teuthida: Loliginidae), in the Gulf of California
(Ciencias Marinas, 2012)
This study examines the abundance and distribution of Panama brief squid (Lolliguncula panamensis) caught during 15 fishery surveys in the Gulf of California in 2003–2006 and 2008. A total of 2460 individuals were captured ...
Abundance and ecologic distribution of the shrimp Rimapenaeus constrictus (Crustacea : Penaeidae) on the northern coast of São Paulo State, Brazil
(Taylor & Francis Ltd, 2004-04-10)
The abundance and ecologic distribution of the shrimp R. constrictus were compared among three different embayments within the northern coast of São Paulo State (23degreesS, 45degreesW); i.e. Mar Virado (MV), Ubatuba (UBA) ...
Composition and abundance of marine shrimps (Crustacea, Decapoda, Penaeidea) in Ubatuba bay, Ubatuba (SP), Brazil
(Inst Tecnologia Parana, 1995-06-01)
This work aims to analyse the composition, abundance and distribution of the Penaeidea species which occur in the Ubatuba Bay (23 degrees 26'S and 45 degrees 02'W). The samples were monthly collected from October/1992 to ...