The geology of the Ciperez-Garcirrey granicic pluton (Prov. Salamanca, Spain)

[Resumen] El plutón granítico de Cipérez-Garcirrey es un plut6n tardihercínico bien ircunscrito y de contorno cartográfico de tendencia circular. Está constituido por tres facies principales de las que la facies común, o más extendida, corresponde a un granito porfídico de dos micas con cordierita, de grano grueso a muy grueso. Las otras dos facies son leucogranitos de dos micas y leucogranitos moscovíticos. Es netamente intrusivo en los materiales encajantes y de emplazamiento epizonal, realizándose con posterioridad a la tercera fase de deformaci6n hercínica del área. La parte norte del plutón corta y fosiliza a la zona de cizalla dúctil deJuzbado-Panalva do Castelo (ZC]P). La facies común muestra una foliaci6n discordante respecto a los contactos externos del plutón coincidente con la dirección de las estructuras de cuarta fase de deformaci6n hercínica del área, las cuales se sobreimponen a las estructuras asociadas a la ZC]P. Se limita pues el último movimiento de la ZC]P que sería anterior al emplázamiento del plut6n y al desarrollo de la cuarta fase de deformación y se propone un emplazamiento sincinemático del plut6n con dicha fase.[Abstract] The Cipérez-Garcirrey granitic pluton is a circumscribed, late-hercynian pluton with a roughly circular outcrop. It is made up of three main facies. The coromon facies is a coarse to very coarse grained two-mica porphyritic granite containing cordierite. The other two facies are two-mica and muscovite leucogranites. The pluton is an epizonal intrusive igneous body whose emplacement took place after the third hercynian deformation phase defined in the area. The nonhern part of the pluton cuts and overprints the ductile shear zone of]uzbado-Panalva do Castelo (ZC]P). The coromon facies shows a foliation of probable tectonic origin which is discordant with respect to the eXternal contacts of the pluton. This foliation parallels the direction of the structures developed during the founh phase of hercynian deformation, which are superimposed to those related with the ZC]P. Therefore, the last movement of the ZC]P, preceded the emplacement of the pluton and the development of the founh deformation phase. Finally, it is proposed that the emplacement of the pluton was synkinematic with the mentioned fourth deformation phase

Caracterización geoquímica y estudio comparativo de plagiogranitos de las Zonas Surportuguesa y Ossa-Morena (SO del Macizo Ibérico, España)

Plagiogranites and albitic rocks belonging to contrasted magmatic associations of different ages and geodynamic environments outcrop in Ossa-Morena (OMZ) and Surportuguese (SPZ) Zones. OMZ plagiogranites are related with Cambrian-Ordovician rifting and represent a part of the felsic members of a bimodal magmatic suite and show oceanic plagiogranites affinities. SPZ plagiogranites are related with a Carboniferous volcano-plutonic calc-alkaline suite related with Variscan Orogeny. Both plagiogranites show many similar petrological and geochemical characteristics but display some different immobile elements ratios as La/Nb, Th/Nb, Th/La that are unaltered by metamorphism, magmatic differentiation and alteration processes and prove differences in their sources. SPZ plagiogranites show a more compositional homogeneity than OMZ ones. This is interpreted as a proof of cogenetic origin for SPZ plagiogranites and heterogeneous origin for OMZ plagiogranites, derived from the mix of different sources (astenospheric, lithospheric and crustal).En la Zona de Ossa-Morena (ZOM) y en la Zona Surportuguesa (ZSP) se encuentran plagiogranitos pertenecientes a asociaciones magmáticas y ambientes geodinámicos muy contrastados. Los primeros pertenecen a una asociación bimodal máfica-félsica relacionada con el rifting cámbrico-ordovícico y presentan bastantes afinidades con plagiogranitos oceánicos. Los segundos forman parte de una asociación volcánico-plutónica calcoalcalina carbonífera relacionada con la Orogenia Varisca. Ambos plagio-granitos son semejantes en diversos aspectos petrológicos y geoquímicos pero muestran diferencias en algunas relaciones de elementos inmóviles tales como La/Nb, Th/Nb, Th/La poco sensibles a los procesos de evolución magmática, metamorfismo y alteración y que son reflejo de la composición de las fuentes. Los plagiogranitos de la ZSP presentan una mayor homogeneidad composicional que los de la ZOM. Esto se interpreta como que los primeros tienen un origen cogenético, mientras que los segundos se derivan de diferentes fuentes (astenosféricas, litosféricas y crustales)

The CARMENES search for exoplanets around M dwarfs: Nine new double-line spectroscopic binary stars

Context. The CARMENES spectrograph is surveying ~300 M dwarf stars in search for exoplanets. Among the target stars, spectroscopic binary systems have been discovered, which can be used to measure fundamental properties of stars. Aims. Using spectroscopic observations, we determine the orbital and physical properties of nine new double-line spectroscopic binary systems by analysing their radial velocity curves. Methods. We use two-dimensional cross-correlation techniques to derive the radial velocities of the targets, which are then employed to determine the orbital properties. Photometric data from the literature are also analysed to search for possible eclipses and to measure stellar variability, which can yield rotation periods. Results. Out of the 342 stars selected for the CARMENES survey, 9 have been found to be double-line spectroscopic binaries, with periods ranging from 1.13 to ~8000 days and orbits with eccentricities up to 0.54. We provide empirical orbital properties and minimum masses for the sample of spectroscopic binaries. Absolute masses are also estimated from mass-luminosity calibrations, ranging between ~0.1 and ~0.6 Msol . Conclusions. These new binary systems increase the number of double-line M dwarf binary systems with known orbital parameters by 15%, and they have lower mass ratios on average.Comment: Accepted for publication in A&A. 17 pages, 4 figure

The CARMENES search for exoplanets around M dwarfs. Period search in Hα\alpha, Na I D, and Ca II IRT lines

We use spectra from CARMENES, the Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical Echelle Spectrographs, to search for periods in chromospheric indices in 16 M0 to M2 dwarfs. We measure spectral indices in the H$\alpha$, the Ca II infrared triplet (IRT), and the Na I D lines to study which of these indices are best-suited to find rotation periods in these stars. Moreover, we test a number of different period-search algorithms, namely the string length method, the phase dispersion minimisation, the generalized Lomb-Scargle periodogram, and the Gaussian process regression with quasi-periodic kernel. We find periods in four stars using H$\alpha$ and in five stars using the Ca II IRT, two of which have not been found before. Our results show that both H$\alpha$ and the Ca II IRT lines are well suited for period searches, with the Ca II IRT index performing slightly better than H$\alpha$. Unfortunately, the Na I D lines are strongly affected by telluric airglow, and we could not find any rotation period using this index. Further, different definitions of the line indices have no major impact on the results. Comparing the different search methods, the string length method and the phase dispersion minimisation perform worst, while Gaussian process models produce the smallest numbers of false positives and non-detections.Comment: 14 pages + 17 pages appendix, 9+16 figures, accepted to A&

The CARMENES search for exoplanets around M dwarfs: The warm super-Earths in twin orbits around the mid-type M dwarfs Ross 1020 (GJ 3779) and LP 819-052 (GJ 1265)

We announce the discovery of two planetary companions orbiting around the low-mass stars Ross 1020 (GJ 3779, M4.0V) and LP 819-052 (GJ 1265, M4.5V). The discovery is based on the analysis of CARMENES radial velocity (RV) observations in the visual channel as part of its survey for exoplanets around M dwarfs. In the case of GJ 1265, CARMENES observations were complemented with publicly available Doppler measurements from HARPS. The datasets reveal two planetary companions, one for each star, that share very similar properties: minimum masses of 8.0 ± 0.5 M and 7.4 ± 0.5 M in low-eccentricity orbits with periods of 3.023 ± 0.001 d and 3.651 ± 0.001 d for GJ 3779 b and GJ 1265 b, respectively. The periodic signals around 3 d found in the RV data have no counterpart in any spectral activity indicator. Furthermore, we collected available photometric data for the two host stars, which confirm that the additional Doppler variations found at periods of approximately 95 d can be attributed to the rotation of the stars. The addition of these planets to a mass-period diagram of known planets around M dwarfs suggests a bimodal distribution with a lack of short-period low-mass planets in the range of 2-5 M . It also indicates that super-Earths (>5 M ) currently detected by RV and transit techniques around M stars are usually found in systems dominated by a single planet.© ESO 2018.CARMENES is an instrument for the Centro Astronomico Hispano-Aleman de Calar Alto (CAHA, Almeria, Spain). CARMENES is funded by the German Max-Planck-Gesellschaft (MPG), the Spanish Consejo Superior de Investigaciones Cientificas (CSIC), the European Union through FEDER/ERF FICTS-2011-02 funds, and the members of the CARMENES Consortium (Max-Planck-Institut fur Astronomie, Instituto de Astrofisica de Andalucia, Landessternwarte Konigstuhl, Institut de Ciencies de l'Espai, Insitut fur Astrophysik Gottingen, Universidad Complutense de Madrid, Thuringer Landessternwarte Tautenburg, Instituto de Astrofisica de Canarias, Hamburger Sternwarte, Centro de Astrobiologia and Centro Astronomico Hispano-Aleman), with additional contributions by the Spanish Ministry of Economy, the German Science Foundation through the Major Research Instrumentation Programme and DFG Research Unit FOR2544 >Blue Planets around Red Stars>, the Klaus Tschira Stiftung, the states of Baden-Wurttemberg and Niedersachsen, and by the Junta de Andalucia. Based on observations collected at the European Organisation for Astronomical Research in the Southern Hemisphere under ESO programme(s) 072.C-0488(E) and 183.C-0437(A). R. L. has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No. 713673 and financial support through the >la Caixa> INPhINIT Fellowship Grant for Doctoral studies at Spanish Research Centres of Excellence, >la Caixa> Banking Foundation, Barcelona, Spain. This work is partly financed by the Spanish Ministry of Economy and Competitiveness through grants ESP2013-48391-C4-2-R, ESP2016-80435-C2-1/2-R, and AYA2016-79425-C3-1/2/3-P

Osteonecrosis de los maxilares: Documento de consenso

Nuestro objetivo ha sido elaborar un documento de posición sobre el riesgo de desarrollar una osteonecrosis de maxilares (ONM) en los pacientes que reciben bifosfonatos para el tratamiento de la osteoporosis, identificando y valorando el grado de evidencia que apoyan las recomendaciones. Para ello se revisaron los estudios publicados sobre la definición, epidemiología, fisiopatología, clínica, diagnóstico y tratamiento de la ONM, elaborándose tras su análisis las presentes recomendaciones. Éstas se efectuaron tras un proceso pre-especificado y reproducible, que incluyó un modelo aceptado para la evaluación y la cita de la evidencia que las apoyaban. El documento, una vez elaborado por los coordinadores, fue revisado y discutido por todos los miembros del panel, elaborándose las recomendaciones provisionales que finalmente fueron estudiadas y aprobadas por los expertos de las sociedades médicas relacionadas con el metabolismo mineral óseo, que se muestran en el Anexo 2