Results 71 to 80 of about 176,075 (225)
Stellar dynamics around transient co-rotating spiral arms
EPJ Web of Conferences, 2012 Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a long-lived wave structure with a constant pattern speed in order to avoid the winding dilemma.
Cropper M., Grand R.J.J., Kawata D.
doaj +1 more source
The Astrophysical Journal, 2023 We present Atacama Large Millimeter/submillimeter Array (ALMA) imaging of molecular gas across the full star-forming disk of the barred spiral galaxy M83 in CO( J = 1–0).
Jin Koda +25 more
doaj +1 more source
Gravitational bar and spiral arm torques from K_s-band observations and implications for the pattern speeds [PDF]
, 2004 We have obtained deep near-infrared K_s-band William Herschel Telescope observations of a sample of 15 nearby spiral galaxies having a range of Hubble types and apparent bar strengths. The near-infrared light distributions are converted into gravitational potentials, and the maximum relative gravitational torques due to the bars and the spirals are ...
arxiv +1 more source
Stellar Bars in Isolated Gas-rich Spiral Galaxies Do Not Slow Down
The Astrophysical Journal, 2023 Elongated bar-like features are ubiquitous in galaxies, occurring at the centers of approximately two-thirds of spiral disks in the nearby Universe. Due to gravitational interactions between the bar and the other components of galaxies, it is expected ...
Angus Beane +8 more
doaj +1 more source
The Astrophysical Journal, 2023 Despite the 30 yr history of ultraluminous X-ray sources (ULXs) studies, issues such as the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or intermediate black holes) as well as the accretion mechanisms are still ...
Chen-Hsun Ma +3 more
doaj +1 more source
A survey of the Wolf–Rayet population of the barred, spiral galaxy NGC 1313 [PDF]
, 2007 We present a VLT/FORS1 survey of Wolf-Rayet (WR) stars in the spiral galaxy NGC 1313. In total, 94 WR candidate sources have been identified from narrow-band imaging.
L. Hadfield, P. Crowther
semanticscholar +1 more source
Spirals and Rings in Barred Galaxies by the ROTASE Model
International Journal of Physics, 2021 This paper extends the application of the ROTASE model for the formation of spiral arms of disc galaxies, questions and confusions from readers about this model are addressed. The optical trail effect behind the spiral arm rotation is the natural consequence of the model.
openaire +4 more sources
The Distribution of Barred Galaxies in the Virgo Cluster [PDF]
, 1996 A study of the distribution of barred and nonbarred disk galaxies in the Virgo cluster is presented in an attempt to use the frequency and spatial distribution of galaxies with specific morphological features to study the efficiency of various environmental effects on the evolution of disk galaxies in clusters.
arxiv +1 more source
Staphylococcus Aureus AgrA Modulators from South African Antimicrobial Plants.
Chemistry &Biodiversity, Accepted Article.South African plants are an underutilized metabolites source for novel antimicrobials targeting key quorum sensing (QS) systems like the Staphylococcus aureus AgrA. AgrA modulating metabolites constitute a new approach to reducing resistance development.
Christiana Eleojo Aruwa, Saheed Sabiu
wiley +1 more source
Towards Scaling‐Invariant Projections for Data Visualization
Computer Graphics Forum, EarlyView.Abstract Finding projections of multidimensional data domains to the 2D screen space is a well‐known problem. Multidimensional data often comes with the property that the dimensions are measured in different physical units, which renders the ratio between dimensions, i.e., their scale, arbitrary.
Joel Dierkes +3 more
wiley +1 more source