980 resultados para Parsons, Andrew, 1817-1855
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Digital image
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We have estimated a metallicity map of the Large Magellanic Cloud (LMC) using the Magellanic Cloud Photometric Survey (MCPS) and Optical Gravitational Lensing Experiment (OGLE III) photometric data. This is a first of its kind map of metallicity up to a radius of 4 degrees-5 degrees, derived using photometric data and calibrated using spectroscopic data of Red Giant Branch (RGB) stars. We identify the RGB in the V, (V - I) colour-magnitude diagrams of small subregions of varying sizes in both data sets. We use the slope of the RGB as an indicator of the average metallicity of a subregion, and calibrate the RGB slope to metallicity using spectroscopic data for field and cluster red giants in selected subregions. The average metallicity of the LMC is found to be Fe/H] = -0.37 dex (sigmaFe/H] = 0.12) from MCPS data, and Fe/H] = -0.39 dex (sigmaFe/H] = 0.10) from OGLE III data. The bar is found to be the most metal-rich region of the LMC. Both the data sets suggest a shallow radial metallicity gradient up to a radius of 4 kpc (-0.049 +/- 0.002 dex kpc(-1) to -0.066 +/- 0.006 dex kpc(-1)). Subregions in which the mean metallicity differs from the surrounding areas do not appear to correlate with previously known features; spectroscopic studies are required in order to assess their physical significance.
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Define ser lícito o tráfico de escravos nos territórios portugueses ao sul do Equador. Ou seja, em Angola e Moçambique.
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O primeiro volume foi editado em 1832 e o segundo em 1837, após a morte do autor, fato que contribuiu para a pouco acurada nomenclatura em português verificada no segundo volume, conforme afirma Borba de Moraes. A grande importância do trabalho de Pohl residiu na descrição de Goiás, à época, uma parte do Brasil quase desconhecida para os cientistas estrangeiros. Seu texto contém descrições sobre a arquitetura colonial e do século XIX. Pohl também produziu um atlas que complementou, por meio de belas ilustrações, o trabalho contido nesses dois volumes. Estes, especialmente se acompanhados do atlas, são um trabalho mais raro do que os relativos às viagens de Martins
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Parte 1 - Cartas de Lei, Alvarás, Decretos e Cartas Régias
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Parte 1 - Atos do Poder Legislativo
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Ouvrage enrichi d'un superbe atlas, compose de 41 planches gravées en taille-douce, et de trois carte.
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On two occasions Nursia abbreviata Bell, 1855 has been recovered from the stomachs of Batrochus grunniens (Linnaeus, 1758) caught with commercial fish. Nursia abbreviata has been previously recorded from Karachi by Alcock (1896). The present specimens afford the first subsequent record of the species from the region, and are represented by only two males recovered from fish stomachs. The only other species of the genus from Pakistan is N. Rubifera Muller, 1866 which is common in shore collections (Tirmizi and Kazmi, 1988). A brief description of the present material is given below.
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IEECAS SKLLQG
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http://www.archive.org/details/hawaiianislandsa00peabiala
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http://books.google.com/books?vid=OCLC55772204