Browsing by Author "Ramos, P."

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    An all-sky proper-motion map of the Sagittarius stream using Gaia DR2
    (2020) Antoja, T.; Ramos, P.; Mateu, C.; Helmi, A.; Anders, F.; Jordi, C.; Carballo-Bello, J. A.
    Aims. We aim to measure the proper motion along the Sagittarius stream, which is the missing piece in determining its full 6D phase space coordinates.Methods. We conduct a blind search of over-densities in proper motion from the Gaia second data release in a broad region around the Sagittarius stream by applying wavelet transform techniques.Results. We find that for most of the sky patches, the highest intensity peaks delineate the path of the Sagittarius stream. The 1500 peaks identified depict a continuous sequence spanning almost 2 in the sky, only obscured when the stream crosses the Galactic disk. Altogether, around 100 000 stars potentially belong to the stream as indicated by a coarse inspection of the color-magnitude diagrams. From these stars, we determine the proper motion along the Sagittarius stream, making it the proper-motion sequence with the largest span and continuity ever measured for a stream. A first comparison with existing N-body models of the stream reveals some discrepancies, especially near the pericenter of the trailing arm and an underestimation of the total proper motion for the leading arm.Conclusions. Our study provides a starting point for determining the variation of the population of stars along the stream, the distance to the stream from the red clump stars, and the solar motion. It also permits much more accurate measurement of the Milky Way potential.
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    Induction of PrMADS10 on the lower side of bent pine tree stems : potential role in modifying plant cell wall properties and wood anatomy
    (2019) Cruz, N.; Mendez, T.; Ramos, P.; Urbina, D.; Vega C., Andrea; Gutiérrez Ilabaca, Rodrigo Antonio; Moya-Leon, M.A.; Herrera, R.
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    “It’s impossible for them to understand me ‘cause I haven’t said a word”: how women baby boomers shape social participation spaces in old age
    (2021) Majón-Valpuesta, D.; Pérez-Salanova, M.; Ramos, P.; Haye, A.
    The baby boom generation's retirement will change the conceptualization of participation in old age due to their particularities from having experienced a specific socio-historical context. Likewise, the feminization of old age underscores the importance of developing research from the perspectives of gender and critical feminist gerontology. The objective of the present study is to identify and analyze women baby-boomers' conceptualizations about social participation regarding the configuration of social participation spaces. Five discussion groups and five individual interviews were conducted with 56 baby boomers residing in Andalusia (Spain). Here we focus on a separate analysis of the 27 women participating in these settings. The results were organized around four factors: desirability of social participation spaces, adaptation of spaces to preferences, facilitators and barriers in the adaptation of spaces, and the importance of agency in the social participation spaces. Through the analyzed discourse it was observed that participants in this study gave special importance to promoting spaces that involve social contribution, self-management, and self-determination of the spaces, adaptation of access, as well as exercising agency.