Observational Δν\Delta\nu-ρˉ\bar\rho relation for δ\delta Sct stars using eclipsing binaries and space photometry

Delta Scuti ($\delta$ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modelling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space photometry observations of eclipsing binaries with a $\delta$ Sct component to obtain reliable physical parameters and oscillation frequencies. Using that information, we derived an observational scaling relation between the stellar mean density and a frequency pattern in the oscillation spectrum. This pattern is analogous to the solar-like large separation but in the low order regime. We also show that this relation is independent of the rotation rate. These findings open the possibility of accurately characterizing this type of pulsator and validate the frequency pattern as a new observable for $\delta$ Sct stars.Comment: 11 pages, including 2 pages of appendix, 2 figures, 2 tables, accepted for publication in ApJ

Detecting individual gravity modes in the Sun: Chimera or reality?

Over the past 15 years, our knowledge of the interior of the Sun has tremendously progressed by the use of helioseismic measurements. However, to go further in our understanding of the solar core, we need to measure gravity (g) modes. Thanks to the high quality of the Doppler-velocity signal measured by GOLF/SoHO, it has been possible to unveil the signature of the asymptotic properties of the solar g modes, thus obtaining a hint of the rotation rate in the core. However, the quest for the detection of individual g modes is not yet over. In this work, we apply the latest theoretical developments to guide our research using GOLF velocity time series. In contrary to what was thought till now, we are maybe starting to identify individual low-frequency g modes...Comment: Highlight of Astronomy (HoA) proceedings of the JD-11, IAU 2009. 2 pages, 1 figur

An overview of non-destructive and minimally invasive techniques for moisture control in the cultural heritage

This article describes the use of non- or minimally destructive methods to study damp in San Juan Bautista Church at Talamanca de Jarama in the Spanish province of Madrid. The combination of ground penetrating radar (GPR), electrical resistivity tomography (ERT) and wireless sensor network (WSN) techniques provided sub-surface information, while data on wall surfaces were collected with contact hygrometry and infrared thermography. The respective findings and ranges of observation were inter-related to identify the decay associated with the damp and determine the advantages and drawbacks of each instrumental method

Physical exercise, general self-efficacy and life satisfaction in adolescence

El propósito de este trabajo es examinar las relaciones entre práctica física, autoeficacia general y satisfacción con la vida. Participan en la investigación 2.079 adolescentes de la ciudad de Málaga (España), en edades comprendidas entre los 14 y 17 años (M=15,62; DT= 0,95). Se trata de un estudio transversal en el que se usa la encuesta como método para recoger los datos. Los instrumentos utilizados son un cuestionario de tipo sociodemográfico y sobre la práctica física realizada, la Escala de Autoeficacia General (EAG) y la Escala de Satisfacción con la Vida (SWLS). Los resultados indican que las personas activas tienen mayores niveles de autoeficacia general y satisfacción con la vida, y que existe una relación positiva entre estos constructos. Además, hay diferencias significativas en la percepción de autoeficacia en función de la frecuencia de práctica semanal y el contexto social en el que la desarrollan.The aim of this study is to examine the relationships between physical exercise, general self-efficacy and life satisfaction. Research participants are 2079 adolescents from the city of Malaga (Spain), aged between 14 and 17 years (M=15.62; ST= .95). It is a cross-sectional study, in which surveys are used to collect data. The instruments include a questionnaire about sociodemographic variables and physical exercise, the General Self-Efficacy Scale (GSE) and the Satisfaction with Life Scale (SWLS). Results show that people who are physically active have higher levels of general self-efficacy and life satisfaction and that there is a positive relationship between these constructs. In addition, there are significant differences in the perception of self-efficacy according to the frequency of physical exercise per week and the social context in which the exercise takes place

Molecular analysis of lungs from pigs immunized with a mutant transferrin binding protein B-based vaccine and challenged with Haemophilus parasuis

38 p.The molecular analysis of pigs vaccinated with a mutant transferrin-binding protein B (Y167A) from Haemophilus parasuis was compared with that performed for unvaccinated challenged (UNCH) and unvaccinated unchallenged (UNUN) pigs. Microarray analysis revealed that UNCH group showed the most distinct expression profile for immune response genes, mainly for those genes involved in inflammation or immune cell trafficking. This fact was confirmed by real-time PCR, in which the greatest level of differential expression from this group were CD14, CD163, IL-8 and IL-12. In Y167A group, overexpressed genes included MAP3K8, CD14, IL-12 and CD163. Proteomics revealed that collagen -1 and peroxiredoxins 2 and 6 were overexpressed in Y167A pigs. Our study reveals new data on genes and proteins involved in H. parasuis infection and several candidates of resistance to infection that are induced by Y167A vaccine. The expression of proinflammatory molecules from Y176A pigs is similar to their expression in UNUN pigsS

IAA : Información y actualidad astronómica (15)

Sumario : INVESTIGACIÓN. Aerosoles atmosféricos: sus efectos en el clima de las atmósferas del sistema solar.-- El gas molecular en las galaxias.-- VENTANA ABIERTA. Todo un privilegio.-- CHARLAS CON...Vicent Martínez.-- ACTUALIDAD CIENTÍFICA. Un sistema planetario joven en torno a Beta Pictores.-- Una nueva visita a Canis Major .-- ACTIVIDADES IAA.-- AGENDA.Esta revista se publica con la ayuda de la Accion Especial DIF 2001-4284-E del Programa Nacional de Difusión de la Ciencia y la Tecnología, del Ministerio de Ciencia y Tecnología.N

An instrumental puzzle: the modular integration of AOLI

The Adaptive Optics Lucky Imager, AOLI, is an instrument developed to deliver the highest spatial resolution ever obtained in the visible, 20 mas, from ground-based telescopes. In AOLI a new philosophy of instrumental prototyping has been applied, based on the modularization of the subsystems. This modular concept offers maximum flexibility regarding the instrument, telescope or the addition of future developments.Comment: 10 pages, 8 figures, Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99082Z (August 9, 2016