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Träfflista för sökning "WFRF:(Bladh A) srt2:(2010-2014)"

Search: WFRF:(Bladh A) > (2010-2014)

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1.
  • Lebzelter, T., et al. (author)
  • Comparative modelling of the spectra of cool giants
  • 2012
  • In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 547, s. A108-
  • Journal article (peer-reviewed)abstract
    • Context. Our ability to extract information from the spectra of stars depends on reliable models of stellar atmospheres and appropriate techniques for spectral synthesis. Various model codes and strategies for the analysis of stellar spectra are available today. Aims. We aim to compare the results of deriving stellar parameters using different atmosphere models and different analysis strategies. The focus is set on high-resolution spectroscopy of cool giant stars. Methods. Spectra representing four cool giant stars were made available to various groups and individuals working in the area of spectral synthesis, asking them to derive stellar parameters from the data provided. The results were discussed at a workshop in Vienna in 2010. Most of the major codes currently used in the astronomical community for analyses of stellar spectra were included in this experiment. Results. We present the results from the different groups, as well as an additional experiment comparing the synthetic spectra produced by various codes for a given set of stellar parameters. Similarities and differences of the results are discussed. Conclusions. Several valid approaches to analyze a given spectrum of a star result in quite a wide range of solutions. The main causes for the differences in parameters derived by different groups seem to lie in the physical input data and in the details of the analysis method. This clearly shows how far from a definitive abundance analysis we still are.
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2.
  • Borneskog, Catrin, et al. (author)
  • How do lesbian couples compare with heterosexual in vitro fertilization and spontaneously pregnant couples when it comes to parenting stress?
  • 2014
  • In: Acta Paediatrica. - : John Wiley & Sons. - 0803-5253 .- 1651-2227. ; 103:5, s. 537-545
  • Journal article (peer-reviewed)abstract
    • AIM: To study parenting stress in lesbian parents and to compare that stress with heterosexual parents following in vitro fertilisation (IVF) or spontaneous pregnancies.METHODS: This survey took place during 2005-2008 and was part of the Swedish multicentre study on gamete donation. It comprised 131 lesbian parents, 83 heterosexual IVF parents, who used their own gametes, and 118 spontaneous pregnancy parents. The participants responded to the questionnaire when the child was between 12 and 36-months-old and parenting stress was measured by the Swedish Parenting Stress Questionnaire (SPSQ).RESULTS: Lesbian parents experienced less parenting stress than heterosexual IVF parents when it came to the General Parenting Stress measure (p = 0.001) and the subareas of Incompetence (p < 0.001), Social Isolation (p = 0.033) and Role Restriction (p = 0.004). They also experienced less parenting stress than heterosexual spontaneous pregnancy couples, according to the Social Isolation subarea (p = 0.003). Birth mothers experienced higher stress than co-mothers and fathers, according to the Role Restriction measure (p = 0.041).CONCLUSION: These are reassuring findings, considering the known challenges that lesbian families face in establishing their parental roles and, in particular, the challenges related to the lack of recognition of the co-mother.
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