Rise of the titans: a dusty, hyper-luminous “870 µm riser” galaxy at z~6

We report the detection of ADFS-27, a dusty, starbursting major merger at a redshift of z=5.655, using the Atacama Large Millimeter/submillimeter Array (ALMA). ADFS-27 was selected from Herschel/SPIRE and APEX/LABOCA data as an extremely red “870 m riser” (i.e., S250m<S350m<S500m<S870m), demonstrating the utility of this technique to identify some of the highest-redshift dusty galaxies. A scan of the 3mm atmospheric window with ALMA yields detections of CO(J=54) and CO(J=65) emission, and a tentative detection of H2O(211202) emission, which provides an unambiguous redshift measurement. The strength of the CO lines implies a large molecular gas reservoir with a mass of Mgas=2.51011 (CO=0:8) (0:39=r51)M, sufficient to maintain its 2400M yr1 starburst for at least 100 Myr. The 870 m dust continuum emission is resolved into two components, 1.8 and 2.1 kpc in diameter, separated by 9.0 kpc, with comparable dust luminosities, suggesting an ongoing major merger. The infrared luminosity of LIR'2.41013 L implies that this system represents a binary hyper-luminous infrared galaxy, the most distant of its kind presently known. This also implies star formation rate surface densities of SFR=730 and 750M yr1 kpc2, consistent with a binary “maximum starburst”. The discovery of this rare system is consistent with a significantly higher space density than previously thought for the most luminous dusty starbursts within the first billion years of cosmic time, easing tensions regarding the space densities of z6 quasars and massive quiescent galaxies at z&3

Genome Sequence of the Acute Urethral Catheter Isolate Pseudomonas aeruginosa MH38

Wibberg D, Tielen P, Blom J, et al. Genome Sequence of the Acute Urethral Catheter Isolate Pseudomonas aeruginosa MH38. Genome announcements. 2014;2(2): e00161-14.Pseudomonas aeruginosa is a major nosocomial bacterial pathogen causing complicated catheter-associated urinary tract infections (CAUTIs). Here, we present the 6.9-Mb draft genome sequence of P. aeruginosa MH38 isolated from an acute nosocomial CAUTI. It exhibits resistance to several antibiotics but revealed low-level production of virulence factors

Heterogeneous knowledge: Trends in German discourse analysis against an international background

This contribution maps the complex field of discourse analysis in Germany by situating its major currents and putting them in historical perspective. In a first step, it presents the major intellectual sources, such as (post-)structuralism, pragmatism/interactionism as well as hermeneutics, which have served as a backdrop for the establishment of discourse analysis as an interdisciplinary field since the 1980s. In a second step, it takes a closer look at the intellectual conjunctures in the social sciences such as Critical Theory and systems theory before turning to the discourse analytical tendencies that have emerged since the 1980s in the light of Foucault's reception in Germany. Finally, it discusses the features of heterogeneous knowledge discourses. As against top-down studies of political discourse in France and bottom-up investigations of everyday discourse in the US, many discourse analysts in Germany focus on knowledge production as a multi-leveled process involving texts and contexts. Therefore, discourse is seen as a heterogeneous object constructed in the interplay of language, praxis and knowledge