J. Rich, M. A. Dopita, Lisa J. Kewley, David S. N. Rupke,
We present observations of NGC 839 made with the Wide Field Spectrograph (WiFeS) on the ANU 2.3m telescope. Our data cover a region 25" x 60" at a spatial resolution of ~1.5". The long axis of the field is aligned with the superwind we have discovered in this starburst galaxy. The data cover the range of 3700-7000 {\AA}, with a spectral resolution R~7000 in the red, and R~3000 in the blue. We find that the stellar component of the galaxy is strongly dominated by a fast rotating intermediate-age (~400 ...
Tópico(s): Astrophysics and Star Formation Studies
2010 - IOP Publishing | The Astrophysical Journal
L. Ducci, Patrick Kavanagh, M. Sasaki, B. Koribalski,
The galaxy NGC1512 is interacting with the smaller galaxy NGC1510 and shows a peculiar morphology, characterised by two extended arms immersed in an HI disc whose size is about four times larger than the optical diameter of NGC1512. For the first time we performed a deep X-ray observation of the galaxies NGC1512 and NGC1510 with XMM-Newton to gain information on the population of X-ray sources and diffuse emission in a system of interacting galaxies. We identified and classified the sources detected ...
Tópico(s): Astrophysics and Star Formation Studies
2014 - EDP Sciences | Astronomy and Astrophysics
M. D. Reed, A. S. Baran, R. H. Østensen, J. H. Telting, S. J. O’Toole,
We report the discovery of two new pulsating subdwarf B (sdB) stars in the open cluster NGC 6791 using data from the Kepler spacecraft. Three sdB stars were observed for one month in short-cadence (1 min) mode and three months in long-cadence (30 min) mode during Quarter 11 (fall 2011). The stars have Kepler Input Catalogue numbers of 2437937, 2569576 and 2569583 with previous designations of B5, B3 and B6, respectively. Another sdB star exists in the cluster and it is also known to be a pulsator. We ...
Tópico(s): Astronomy and Astrophysical Research
2012 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
... pores (MSPs). The AMPs were said to “induce NGC” (negative Gaussian curvature) of the composition. Here, I ... the magnitude of the effect of AMPs on NGC was quantified only by the lattice constant, c, ... lipid system used to measure AMP effects on NGC [2] forms QII phases in the absence of ...
Tópico(s): Bacteriophages and microbial interactions
2020 - Elsevier BV | Biophysical Journal
... and QII phases all have negative Gaussian curvature (NGC). This rationale implicitly assumes that peptides change the ... systems which were often used in experiments on NGC induction form sponge or QII phases with NGC in the absence of peptides, at slightly higher ...
Tópico(s): Biochemical and Structural Characterization
2022 - Elsevier BV | Biophysical Journal
Acacia F. Dishman, Robert T. Tyler, J.E.B. Fox, Michelle Lee, Jaime de Anda, Ernest Y. Lee, G. C. L. Wong, Brian F. Volkman,
... to measure the induction of negative Gaussian curvature (NGC), a topological requirement for membrane disruption, in model ... state, but not its chemokine structure, selectively induce NGC in model bacterial and fungal membranes, but not ...
Tópico(s): Machine Learning in Bioinformatics
2020 - Elsevier BV | Biophysical Journal