11 research outputs found
Chancelloria eros Walcott, 1920 (Chancelloriidae), Diagoniella Rauff, 1894 y espículas de esponjas hexactinéllidas (Porifera, Protospongiidae) del Cámbrico Medio de San José de Gracia, Sonora, México.
Escleritos aislados de Chancelloria eros Walcott, 1920, Diagoniella sp. y asociaciones de espículas hexactinéllidas-estauractinas y hexactina-pentactinas son descritas para el Cámbrico Medio de San José de Gracia, Sonora, México. El material procede de una secuencia sedimentaria marina de plataforma exterior, constituida principalmente por lutita intercalada con caliza, en asociación con fósiles representativos de la Biozona de Albertella como lo es Peronopsis bonnerensis Resser, 1938; Oryctocephalites walcotti Reeser, 1938; Elrathina antiqua Palmer y Halley, 1979 y Ogygopsis typicalis Resser, 1939; así como braquiópodos inarticulados. Chancelloria eros Walcott, 1920 ha sido reportada anteriormente para el Estado de Sonora, México, en el Cámbrico Medio de la Formación Arrojos, así como Chancelloria sp. en el Cámbrico Temprano de la Formación Puerto Blanco, en asociación con Kiwetinokia en Cerro Rajón en la región de Caborca. Siendo el presente el primer registro para San José de Gracia, Sonora central.Fil: Cuen R, Francisco J.. Universidad de Sonora; MéxicoFil: Beresi, Matilde Sylvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivologia, Glaciologia y Ciencias Ambientales; ArgentinaFil: Montijo, A.. Universidad de Sonora; MéxicoFil: Buitrón, B. E.. Universidad Nacional Autónoma de México; MéxicoFil: Minjares, M. de la O.. Universidad de Sonora; Méxic
CALIFA, the Calar Alto Legacy Integral Field Area survey: I. Survey presentation
We present here the Calar Alto Legacy Integral Field Area (CALIFA) survey,
which has been designed to provide a first step in this direction.We summarize
the survey goals and design, including sample selection and observational
strategy.We also showcase the data taken during the first observing runs
(June/July 2010) and outline the reduction pipeline, quality control schemes
and general characteristics of the reduced data. This survey is obtaining
spatially resolved spectroscopic information of a diameter selected sample of
galaxies in the Local Universe (0.005< z <0.03). CALIFA has been
designed to allow the building of two-dimensional maps of the following
quantities: (a) stellar populations: ages and metallicities; (b) ionized gas:
distribution, excitation mechanism and chemical abundances; and (c) kinematic
properties: both from stellar and ionized gas components. CALIFA uses the PPAK
Integral Field Unit (IFU), with a hexagonal field-of-view of
\sim1.3\sq\arcmin', with a 100% covering factor by adopting a three-pointing
dithering scheme. The optical wavelength range is covered from 3700 to 7000
{\AA}, using two overlapping setups (V500 and V1200), with different
resolutions: R\sim850 and R\sim1650, respectively. CALIFA is a legacy survey,
intended for the community. The reduced data will be released, once the quality
has been guaranteed. The analyzed data fulfill the expectations of the original
observing proposal, on the basis of a set of quality checks and exploratory
analysis.
We conclude from this first look at the data that CALIFA will be an important
resource for archaeological studies of galaxies in the Local Universe.Comment: 32 pages, 29 figures, Accepted for publishing in Astronomy and
Astrophysic