Browsing by Author "Rodríguez, S."

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    A comparative study of the fatty acid profiles in commercial sheep cheeses
    (2014) Aguilar González, Claudio; Toro Mujica, Paula; Vargas Bello, Einar; Vera, Raúl; Ugalde, C.; Rodríguez, S.; Briones, I.
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    Following the crumbs: statistical effects of ram pressure in galaxies
    (OUP, 2019) Rodríguez, S.; Garcia Lambas, D.; Padilla, Nelson; Troncoso-Iribarre, P.
    We analyse the presence of dust around galaxy group members through the reddening of background quasars. By taking into account quasar colour and their dependence on redshift and angular position, we derive mean quasar colours excess in projected regions around member galaxies and infer the associated dust mass. For disc-like galaxies perpendicular to the plane of the sky, and at groupcentric distances of the order of the virial radius, thus likely to reside in the infall regions of groups, we find systematic colour excess values e ∼ 0.009 ± 0.004 for g − r colour. Under the hypothesis of Milky Way dust properties, we derive dust masses of 5.8±2.5×108M⊙h−1 , implying that a large fraction of dust is being stripped from galaxies in their path to groups. We also studied the photometry of member galaxies to derive a colour asymmetry relative to the group centre direction from a given galaxy. We conclude that the regions of galaxies facing the centre are bluer, consistent with the effects of gas compression and star formation. We also combine these two procedures finding that galaxies with a small colour asymmetry show the largest amounts of dust towards the external regions compared to a control sample. We conclude that dust removal is very efficient in galaxies on infall. The fact that galaxies redder towards groups centres are associated with the strongest reddening of background quasars suggest that gas removal induced by ram pressure stripping plays a key role in galaxy evolution and dust content.
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    Santiago de Chile through the eyes of Jane Jacobs. Analysis of the conditions for urban vitality in a Latin American metropolis
    (2020) Fuentes Arce, Luis; Miralles Guasch, C.; Truffello Robledo, Ricardo; Delclòs Alió, X.; Flores, M.; Rodríguez, S.; CEDEUS (Chile)
    The urban planning ideas proposed by Jane Jacobs in the 1960s remain relevant to this day, promoting a perspective on the relationship between urban morphology and the community that takes into consideration the experiences of the people themselves in the planning of cities. With Jacobs’ ideas in mind, this article seeks to explore the urban territory of Santiago, Chile, and to assess the vitality of its neighborhoods with their diversity of morphological, architectural, and spatial characteristics. The results reveal a spatial reality that differs considerably from typical interpretations of this and other cities across Latin America, characterized by a strong radial center–periphery dynamic interspersed with sub-centers of high vitality, mainly in the form of rural towns and villages that, over time, became absorbed into the urban fabric of Santiago, along with social housing estates located on what used to be the urban periphery.
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    The better half - asymmetric star formation due to ram pressure in the EAGLE simulations
    (2020) Troncoso Iribarren, P.; Padilla, Nelson; Santander, C.; Lagos, C. D. P.; García Lambas, D.; Rodríguez, S.; Contreras, S.