321,502 research outputs found

    Racialisation, relationality and riots: Intersections and interpellations

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    This paper takes up Avtar Brah's (1999) invitation to write back to the issues she raises in her mapping of the production of gendered, classed and racialised subjectivities in west London. It addresses two topics that, together, illuminate racialised and gendered interpellation and psychosocial processes. The paper is divided into two main sections. The first draws on empirical research on the transition to motherhood conducted in east London to consider one mother's experience of giving birth in the local maternity hospital. The maternity ward constituted a site where racialised difference became salient, leading her to construct her maternal identity by asserting her difference from Bangladeshi mothers and so self-racialising, as well as ‘othering’ Bangladeshi mothers. The paper analyses the ways in which her biography may help to explain why her experience of the maternity hospital interpellates her into racialised positioning. The second section focuses on media responses to the riots in various English cities in August 2011. It examines the ways in which some media punditry racialised the riots and inclusion in the British postcolonial nation. The paper analyses three sets of commentaries and illuminates the ways in which they racialise the debate in essentialising ways, reproducing themes that were identified in the 1980s as ‘new racism’ and apportioning blame for the riots to ‘black gangster culture’. While these media pronouncements focus on racialisation, they are intersectional in implicitly also invoking gender and social class. The paper argues that the understanding of the mother's self-racialisation is deepened by a consideration of the racialised discourses that can be evoked (and are contested) in periods of social unrest. The paper thus draws on part of the methodology of ‘The Scent of Memory’ in layering media readings and biographical narratives to analyse the contemporary psychosocial space of racialisation

    Stellar Populations in the Phoenix Dwarf (dIrr/dSph) Galaxy as Observed by HST/WFPC2

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    We present HST/WFPC2 photometry of the central regions of the Phoenix dwarf. Accurate photometry allows us to: 1) confirm the existence of the horizontal branch previously detected by ground-based observations, and use it to determine a distance to Phoenix, 2) clearly detect the existence of multiple ages in the stellar population of Phoenix, 3) determine a mean metallicity of the old red giant branch stars in Phoenix, and suggest that Phoenix has evolved chemically over its lifetime, 4) extract a rough star formation history for the central regions which suggests that Phoenix has been forming stars roughly continuously over its entire lifetime.Comment: Accepted by AJ, 22 pages including 6 figures + 1 figure in JPEG forma

    The stellar content of the Local Group dwarf galaxy Phoenix

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    We present new deep VIVI ground-based photometry of the Local Group dwarf galaxy Phoenix. Our results confirm that this galaxy is mainly dominated by red stars, with some blue plume stars indicating recent (100 Myr old) star formation in the central part of the galaxy. We have performed an analysis of the structural parameters of Phoenix based on an ESO/SRC scanned plate, in order to search for differentiated component. The results were then used to obtain the color-magnitude diagrams for three different regions of Phoenix in order to study the variation of the properties of its stellar population. The young population located in the central component of Phoenix shows a clear asymmetry in its distribution, that could indicate a propagation of star formation across the central component. The HI cloud found at 6 arcmin Southwest by Young & Lo (1997) could have been involved in this process. We also find the presence of a substantial intermediate-age population in the central region of Phoenix that would be less abundant or absent in its outer regions. This result is also consistent with the gradient found in the number of horizontal branch stars, whose frequency relative to red giant branch stars increases towards the outer part of the galaxy. These results, together with those of our morphological study, suggest the existence of an old, metal-poor population with a spheroidal distribution surrounding the younger inner component of Phoenix. This two-component structure may resemble the halo-disk structure observed in spirals, although more data, in particular on kinematics, are necessary to confirm this.Comment: 46 pages, 21 figures, 9 Tables, to be published in AJ, August 9

    Time-dependent radiative transfer with PHOENIX

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    Aims. We present first results and tests of a time-dependent extension to the general purpose model atmosphere code PHOENIX. We aim to produce light curves and spectra of hydro models for all types of supernovae. Methods. We extend our model atmosphere code PHOENIX to solve time-dependent non-grey, NLTE, radiative transfer in a special relativistic framework. A simple hydrodynamics solver was implemented to keep track of the energy conservation of the atmosphere during free expansion. Results. The correct operation of the new additions to PHOENIX were verified in test calculations. Conclusions. We have shown the correct operation of our extension to time-dependent radiative transfer and will be able to calculate supernova light curves and spectra in future work.Comment: 7 pages, 12 figure

    An Optical Velocity for the Phoenix Dwarf Galaxy

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    We present the results of a VLT observing program carried out in service mode using FORS1 on ANTU in Long Slit mode to determine the optical velocities of nearby low surface brightness galaxies. As part of our program of service observations we obtained long-slit spectra of several members of the Phoenix dwarf galaxy from which we derive an optical helio-centric radial velocity of -13 +/- 9km/s. This agrees very well with the velocity of the most promising of the HI clouds seen around Phoenix, which has a helio-centric velocity of -23 km/s, but is significantly different to the recently published optical heliocentric velocity of Phoenix of -52 +/- 6 km/s of Gallart et al. (2001).Comment: Aceepted for publication in MNRA

    Intersectionality editorial

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    Negotiating multicultures, identities and intersectionalities

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