Relevancia de los sistemas de soporte social y nivel de integración en el marco de la convergencia al espacio europeo de Educación Superior: una propuesta de investigación en la Universidad de Santiago de Compostela

Los planes de estudio en el marco del nuevo Espacio Europeo de Educación Superior demandan de los estudiantes un rol más activo en el que deben de asumir una parte importante de responsabilidad en la organización de su trabajo. Para una adecuada transición a la universidad son claves tanto los patrones de interacción entre los jóvenes y su ambiente más inmediato como su nivel de satisfacción con la facultad y titulación elegidas. A pesar de ser considerados estos factores como críticos en el ajuste académico, su papel no ha sido estudiado en numerosos países de la Unión Europea como es el caso de España. Nuestra propuesta de analizar en qué medida estas variables actúan como factores de protección/riesgo en el ajuste y éxito académico de los estudiantes universitarios de primer año: (i) puede aportar conocimiento sobre el papel que juegan en nuestro contexto cultural; (ii) puede ayudar a la puesta en marcha de estrategias de intervención dirigidas a aquellos jóvenes que presenten especiales dificultades en la transición a una Educación Superior; (iii) permitiría, además, integrar nuestros datos con los obtenidos en otras iniciativas que se están realizando a nivel internacional, posibilitando en especial a nivel europeo actuaciones conjuntas para atender los desafíos planteados por EEES

Adaptación española de escalas de evaluación del soporte social percibido en estudiantes universitarios de primer año

El presente estudio tiene como objetivo principal la adaptación y validación a la población española universitaria de algunas Escalas de Soporte Social Percibido: Perceived Acceptance Scale (PAS), Social Support Questionnaire-Short Form (SSQ6) y Social Provisions Scale (SPS). El soporte social percibido es el componente cognitivo y subjetivo del soporte social que promociona bienestar psicológico y protege al individuo ante situaciones adversas o estresantes. Las escalas se aplicaron a una muestra 277 estudiantes universitarios de primer año. Los resultados de nuestro estudio confirman las buenas propiedades psicométricas de las escalas originales. La fiabilidad, en términos de consistencia interna, fue satisfactoria, al igual que la evidencia de validez convergente y discriminante, obtenida de las correlaciones entre las tres escalas y sus respectivas subescalas

On the molecular gas content and SFR in Hickson compact groups: enhanced or deficient?

Aims. We study the effect of the extreme environment in Hickson compact groups (HCGs) on the molecular gas mass, MH2, and the star formation rate (SFR) of galaxies as a function of atomic hydrogen (HI) content and evolutionary phase of the group.Methods. We selected a redshift-limited (D < 100 Mpc) sample of 88 galaxies in 20 HCGs with available atomic hydrogen (HI) VLA maps, covering a wide range of HI deficiencies and evolutionary phases of the groups and containing at least one spiral galaxy. We observed the CO(1–0) and CO(2–1) lines with the IRAM 30 m telescope for 47 galaxies. Together with literature data, our sample contains CO(1–0) spectra for 86 galaxies. We derived the far-infrared (FIR) luminosity (LFIR) from IRAS data and used it as a tracer of the SFR. We calculated the HI mass (MHI), LFIR, and MH2 deficiencies, based on the values expected from LB and LK in isolated galaxies from the AMIGA sample. We limited our statistical analysis to spiral galaxies, since the large number of upper limits did not allow drawing strong conclusions about MH2and LFIR in early-type galaxies.Results. The mean deficiencies of LFIR and MH2 of spiral galaxies in HCGs are close to 0, indicating that their average SFR and molecular gas content are similar to those of isolated galaxies. However, there are indications of an excess of MH2 (~50%) in spiral galaxies in HCGs, which can be interpreted, assuming that there is no systematic difference in the CO-to-H2 conversion factor, as either an enhanced molecular gas content or as a higher concentration of the molecular component towards the center in comparison to galaxies in lower density environments. In contrast, the mean MHI of spiral galaxies in HCGs is only 12% of the expected value. The specific SFR (sSFR = SFR/stellar mass) tends to be lower for galaxies with higher MH2 or MHI deficiency. This trend is not seen for the star formation efficiency (SFE = SFR/MH2), which is very similar to isolated galaxies. We found tentative indications of an enhancement of MH2 in spiral galaxies in HCGs in an early evolutionary phase and a decrease in later phases. We suggest that this might be due to an enhancement of the conversion from atomic to molecular gas due to ongoing tidal interactions in an early evolutionary phase, followed by HI stripping and a decrease in the molecular gas content because of lack of replenishment.Conclusions. The properties of MH2 and LFIR in galaxies in HCGs are surprisingly similar to those of isolated galaxies, in spite of the much higher Def(MHI) of the former. The trends of the sSFR and Def(MH2) with Def(MHI) and the evolutionary state indicate, however, that the ongoing interaction might have some effect on the molecular gas and SF

High-resolution MEGARA integral-field unit spectroscopy and structural analysis of a fast-rotating, disky bulge in NGC 7025

Disky bulges in spiral galaxies are commonly thought to form out of disk materials (mainly) via bar-driven secular processes. They are structurally and dynamically distinct from >classical bulges,> which are built in violent merger events. We use high-resolution GTC/MEGARA integral-field unit spectroscopic observations of the Sa galaxy NGC 7025, obtained during the MEGARA commissioning run, together with detailed 1D and 2D decompositions of this galaxy's Sloan Digital Sky Survey i-band data to investigate the formation of its disky (bulge) component, which makes up ∼30% of the total galaxy light. With a Sérsic index n ∼ 1.80 ± 0.24, a half-light radius Re ∼ 1.70 ± 0.43 kpc, and stellar mass M ∗ ∼(4.34 ± 1.70) × 10 10 M o , this bulge dominates the galaxy light distribution in the inner (∼4.7 kpc). Measuring the spins (λ) and ellipticities (ϵ) enclosed within nine different circular apertures with radii R ≤ Re, we show that the bulge, which exhibits a spin track of outwardly rising λ and , is a fast rotator for all the apertures considered. Our findings suggest that this inner disky component is a pseudo-bulge, consistent with the stellar and dust spiral patterns seen in the galaxy down to the innermost regions but in contrast to the classical bulge interpretation favored in the past. We propose that a secular process involving the tightly wound stellar spiral arms of NGC 7025 may be driving gas and stars out of the disk into the inner regions of the galaxy, building up the massive pseudo-bulge. © 2019. The American Astronomical Society. All rights reserved.We thank the referee for their careful reading of the paper and many suggestions that improved the paper. B.T.D. acknowledges support from a Spanish postdoctoral fellowship, >Ayudas 1265 para la atraccion del talento investigador. Modalidad 2: jovenes investigadores,> funded by Comunidad de Madrid under grant no. 2016-T2/TIC-2039. We acknowledge financial support from the Spanish Ministry of Economy and Competitiveness under grant no. AYA2016-75808-R, which is partly funded by the European Regional Development Fund, and from the Excellence Network MaegNet (AYA2017-90589-REDT). We acknowledge financial support from SpaceTec-CM: Desarrollo de nuevas tecnologias para instrumentacion espacial en la Comunidad de Madrid, S2013/ICE-2822. Funding for SDSS-IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah.Peer Reviewe

The miniJPAS survey: a preview of the Universe in 56 colours

International audienceThe Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) will soon start to scan thousands of square degrees of the northern extragalactic sky with a unique set of $56$ optical filters from a dedicated $2.55$m telescope, JST, at the Javalambre Astrophysical Observatory. Before the arrival of the final instrument (a 1.2 Gpixels, 4.2deg$^2$ field-of-view camera), the JST was equipped with an interim camera (JPAS-Pathfinder), composed of one CCD with a 0.3deg$^2$ field-of-view and resolution of 0.23 arcsec pixel$^{-1}$. To demonstrate the scientific potential of J-PAS, with the JPAS-Pathfinder camera we carried out a survey on the AEGIS field (along the Extended Groth Strip), dubbed miniJPAS. We observed a total of $\sim 1$ deg$^2$, with the $56$ J-PAS filters, which include $54$ narrow band (NB, $\rm{FWHM} \sim 145$Angstrom) and two broader filters extending to the UV and the near-infrared, complemented by the $u,g,r,i$ SDSS broad band (BB) filters. In this paper we present the miniJPAS data set, the details of the catalogues and data access, and illustrate the scientific potential of our multi-band data. The data surpass the target depths originally planned for J-PAS, reaching $\rm{mag}_{\rm {AB}}$ between $\sim 22$ and $23.5$ for the NB filters and up to $24$ for the BB filters ($5\sigma$ in a $3$~arcsec aperture). The miniJPAS primary catalogue contains more than $64,000$ sources extracted in the $r$ detection band with forced photometry in all other bands. We estimate the catalogue to be complete up to $r=23.6$ for point-like sources and up to $r=22.7$ for extended sources. Photometric redshifts reach subpercent precision for all sources up to $r=22.5$, and a precision of $\sim 0.3$% for about half of the sample. (Abridged

The miniJPAS survey: A preview of the Universe in 56 colors

International audienceThe Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) will scan thousands of square degrees of the northern sky with a unique set of 56 filters using the dedicated 2.55 m Javalambre Survey Telescope (JST) at the Javalambre Astrophysical Observatory. Prior to the installation of the main camera (4.2 deg2 field-of-view with 1.2 Gpixels), the JST was equipped with the JPAS-Pathfinder, a one CCD camera with a 0.3 deg2 field-of-view and plate scale of 0.23 arcsec pixel−1. To demonstrate the scientific potential of J-PAS, the JPAS-Pathfinder camera was used to perform miniJPAS, a ∼1 deg2 survey of the AEGIS field (along the Extended Groth Strip). The field was observed with the 56 J-PAS filters, which include 54 narrow band (FWHM ∼ 145 Å) and two broader filters extending to the UV and the near-infrared, complemented by the u, g, r, i SDSS broad band filters. In this miniJPAS survey overview paper, we present the miniJPAS data set (images and catalogs), as we highlight key aspects and applications of these unique spectro-photometric data and describe how to access the public data products. The data parameters reach depths of magAB ≃ 22−23.5 in the 54 narrow band filters and up to 24 in the broader filters (5σ in a 3″ aperture). The miniJPAS primary catalog contains more than 64 000 sources detected in the r band and with matched photometry in all other bands. This catalog is 99% complete at r = 23.6 (r = 22.7) mag for point-like (extended) sources. We show that our photometric redshifts have an accuracy better than 1% for all sources up to r = 22.5, and a precision of ≤0.3% for a subset consisting of about half of the sample. On this basis, we outline several scientific applications of our data, including the study of spatially-resolved stellar populations of nearby galaxies, the analysis of the large scale structure up to z ∼ 0.9, and the detection of large numbers of clusters and groups. Sub-percent redshift precision can also be reached for quasars, allowing for the study of the large-scale structure to be pushed to z > 2. The miniJPAS survey demonstrates the capability of the J-PAS filter system to accurately characterize a broad variety of sources and paves the way for the upcoming arrival of J-PAS, which will multiply this data by three orders of magnitude.Key words: surveys / techniques: photometric / astronomical databases: miscellaneous / stars: general / galaxies: general / cosmology: observations⋆ miniJPAS data and associated value added catalogs are publicly available http://archive.cefca.es/catalogues/minijpas-pdr20191