Open University

About: Open University is a education organization based out in Milton Keynes, United Kingdom. It is known for research contribution in the topics: Context (language use) & Population. The organization has 11702 authors who have published 35020 publications receiving 1110835 citations. The organization is also known as: Open University, The & Open University.

Gas and Dust in a Submillimeter Galaxy at z = 4.24 from the Herschel Atlas

Abstract: We report ground-based follow-up observations of the exceptional source, ID 141, one of the brightest sources detected so far in the Herschel Astrophysical Terahertz Large Area Survey cosmological survey. ID 141 was observed using the IRAM 30 m telescope and Plateau de Bure interferometer (PdBI), the Submillimeter Array, and the Atacama Pathfinder Experiment submillimeter telescope to measure the dust continuum and emission lines of the main isotope of carbon monoxide and carbon ([C I] and [C II]). The detection of strong CO emission lines with the PdBI confirms that ID 141 is at high redshift (z = 4.243 ± 0.001). The strength of the continuum and emission lines suggests that ID 141 is gravitationally lensed. The width (ΔV FWHM ~ 800 km s–1) and asymmetric profiles of the CO and carbon lines indicate orbital motion in a disk or a merger. The properties derived for ID 141 are compatible with an ultraluminous (L FIR ~ (8.5 ± 0.3) × 1013 μ–1 L L ☉, where μL is the amplification factor), dense (n ≈ 104 cm–3), and warm (T kin ≈ 40 K) starburst galaxy, with an estimated star formation rate of (0.7-1.7) × 104 μ–1 L M ☉ yr–1. The carbon emission lines indicate a dense (n ≈ 104 cm–3) photon-dominated region, illuminated by a far-UV radiation field a few thousand times more intense than that in our Galaxy. In conclusion, the physical properties of the high-z galaxy ID 141 are remarkably similar to those of local ultraluminous infrared galaxies.

Young People's Constructions of Self: Notes on the Use and Analysis of the Photo‐Elicitation Methods

Abstract: The article examines the use of photo‐elicitation methods in an ESRC‐funded study of young consumers. Participants were asked to take photographs of consumer items that were significant to them. These were subsequently used in recorded interviews as a trigger to elicit the discussion of the relationship between consumer goods and identity. The analysis focuses on how the features of visual representation influence the versions of identity that are presented. We show how participants both accommodate to and exploit aspects of the photographic image in creating their accounts. This is achieved by using the visual image to bolster identity claims and employing the verbal accounts to edit and contextualise the identity implications of the visual image. We suggest that the photo interview offers participants an opportunity to show rather than ‘tell’ aspects of their identity that might have otherwise remained hidden. It may therefore be a useful tool for researching contentious or problematic identity positions.

The Origin of Mercury

Abstract: Mercury’s unusually high mean density has always been attributed to special circumstances that occurred during the formation of the planet or shortly thereafter, and due to the planet’s close proximity to the Sun. The nature of these special circumstances is still being debated and several scenarios, all proposed more than 20 years ago, have been suggested. In all scenarios, the high mean density is the result of severe fractionation occurring between silicates and iron. It is the origin of this fractionation that is at the centre of the debate: is it due to differences in condensation temperature and/or in material characteristics (e.g. density, strength)? Is it because of mantle evaporation due to the close proximity to the Sun? Or is it due to the blasting off of the mantle during a giant impact?