Visions of a Semantic Molecular Future

Booklet handout distributed at the VSMF Symposium held at the Unilever Centre on 2011-01-17The event looks forward. Scholarship (universities, research, teaching, publishing) has been slow to take up the opportunities of this digital century. This is an opportunity to identify and build the future.EPSRC (Pathways to Impact Award). Unilever plc (Unilever Centre for Molecular Science Informatics

Exploring views on future directions of research involving nonbinary autistic people through lived experience

This study aimed to capture what nonbinary autistic people think about research that involves them and how this relates to their experiences. Research questions considered views of current research, what future research should focus on and how views are informed by experiences. Interpretative phenomenological analysis (IPA) was used to analyse transcripts from interviews with 5 NBA individuals through an intersectional lens. Participants valued current research that was important and timely to NBA individuals from diverse backgrounds and focused on ways forward. They thought future research should be led by the community and had ideas about the role of education in facilitating societal change and meeting the needs of NBA people. Views were informed by foundational experiences growing up, conflict throughout their lives and newfound self-discovery and empowerment in their present day. Participants were informed by others’ experiences and took an active role in shaping their communities. Further research may utilise the findings of this paper to inform research agendas, community-led research practices and educational programmes for teaching about diversity

Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes

The relation of central black hole mass and stellar spheroid velocity dispersion (the M-$\sigma$ relation) is one of the best-known and tightest correlations linking black holes and their host galaxies. There has been much scrutiny concerning the difficulty of obtaining accurate black hole measurements, and rightly so; however, it has been taken for granted that measurements of velocity dispersion are essentially straightforward. We examine five disk galaxies from cosmological SPH simulations and find that line-of-sight effects due to galaxy orientation can affect the measured $\sigma$ by 30%, and consequently black hole mass predictions by up to 1.0 dex. Face-on orientations correspond to systematically lower velocity dispersion measurements, while more edge-on orientations give higher velocity dispersions, due to contamination by disk stars when measuring line of sight quantities. We caution observers that the uncertainty of velocity dispersion measurements is at least 20 km/s, and can be much larger for moderate inclinations. This effect may account for some of the scatter in the locally measured M-$\sigma$ relation, particularly at the low-mass end. We provide a method for correcting observed $\sigma_{\rm los}$ values for inclination effects based on observable quantities.Comment: 11 pages, 7 figures, replaced with accepted versio

Tracing Outflowing Metals in Simulations of Dwarf and Spiral Galaxies

We analyze the metal accumulation in dwarf and spiral galaxies by following the history of metal enrichment and outflows in a suite of twenty high-resolution simulated galaxies. These simulations agree with the observed stellar and gas-phase mass-metallicity relation, an agreement that relies on large fractions of the produced metals escaping into the CGM. For instance, in galaxies with Mvir ~ 1e9.5 -- 1e10 solar masses, we find that about ~ 85% of the available metals are outside of the galactic disk at z = 0, although the fraction decreases to a little less than half in Milky Way-mass galaxies. In many cases, these metals are spread far beyond the virial radius. We analyze the metal deficit within the ISM and stars in the context of previous work tracking the inflow and outflow of baryons. Outflows are prevalent across the entire mass range, as is reaccretion. We find that between 40 and 80% of all metals removed from the galactic disk are later reaccreted. The outflows themselves are metal enriched relative to the ISM by a factor of 0.2 dex because of the correspondence between sites of metal enrichment and outflows. As a result, the metal mass loading factor scales as eta_metals \propto v_circ^-0.91, a somewhat shallower scaling than the total mass loading factor. We analyze the simulated galaxies within the context of analytic chemical evolution models by determining their net metal expulsion efficiencies, which encapsulate the rates of metal loss and reaccretion. We discuss these results in light of the inflow and outflow properties necessary for reproducing the mass-metallicity relation.Comment: Under review by ApJ. 21 pages, 15 figure