Results 91 to 100 of about 143,457 (288)

A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm

Astronomische Nachrichten, EarlyView.
ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber, Maximilian Halenke, Aakash Bhat, Veronika Schaffenroth   +3 more
wiley   +1 more source

The effect of environment on the structure of disc galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We study the influence of environment on the structure of disc galaxies, using \texttt{IMFIT} to measure the g- and r-band structural parameters of the surface-brightness profiles for $\sim$700 low-redshift (z$
Ignacio Trujillo, Ignacio Trujillo, Florian Pranger, Lee S. Kelvin, María Cebrián, María Cebrián   +5 more
openaire   +3 more sources

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

Accretion by the Galaxy

EPJ Web of Conferences, 2012
Cosmology requires at least half of the baryons in the Universe to be in the intergalactic medium, much of which is believed to form hot coronae around galaxies. Star-forming galaxies must be accreting from their coronae.
Binney J., Fraternali F.
doaj   +1 more source

Spiral eigenmodes triggered by grooves in the phase space of disc galaxies [PDF]

, 2015
We use linear perturbation theory to investigate how a groove in the phase space of a disc galaxy changes the stellar disc's stability properties. Such a groove is a narrow trough around a fixed angular momentum from which most stars have been removed, rendering part of the disc unresponsive to spiral waves. We find that a groove can dramatically alter
arxiv   +1 more source

Are galaxy discs optically thick? [PDF]

Monthly Notices of the Royal Astronomical Society, 1989
The classical optical evidence for the low optical depths traditionally assigned to spiral disks is reexamined, suggesting that it is highly model-dependent and unconvincing. In particular, layered models with a physically thin but optically thick dust layer behave like optically thin disks.
Steven Phillipps, Jonathan Ivor Davies, Michael John Disney   +2 more
openaire   +2 more sources

Characterization of the Cubamyces menziesii terpenome

ChemBioChem, Accepted Article.
Long‐lasting polypore fungi are significant producers of terpene cyclases of high interest for medicinal or biotechnological applications. Following the 1,000 Fungal Genomes initiative launched by the Joint Genome Institute, we explored the genome of Cubamyces (C.) menziesii and identified eighteen genes encoding sesquiterpene cyclases. In a search for
Gilles Iacazio, Létitia Leydet, Julie Couillaud, Agnès Amouric, Elise Courvoisier-Dezort, Carole Avesque, Thierry Giardina, Mireille Attolini, Pierre Rousselot-Paillet, Katia Duquesne, Marie-Noelle Rosso   +10 more
wiley   +1 more source

Retrograde infall of the intergalactic gas onto S-galaxy and activity of galactic nuclei

Open Astronomy
We present the results of numerical simulations focused on the accretion of intergalactic gas onto a gas-rich S-type disc galaxy. Our investigation explores the conditions favouring the emergence of counterrotating stellar and gaseous components within ...
Khrapov Sergey S., Khoperskov Alexander V.   +1 more
doaj   +1 more source

HAFNIUM ABUNDANCES IN FGK DWARF OF GALACTIC DISK

Odessa Astronomical Publications, 2018
In this work we present new observational data for hafnium (72). Hf is an important element that is between the lightest rare-earth elements (e.g., La, Z = 57) with elements of the third r-process peak (Os, Ir, Pt, Z =76-78). Hafnium is the heaviest (Z =
T. I. Gorbaneva, T. V. Mishenina
doaj   +1 more source

Discs In Early Quiescent Galaxies

, 2016
The discovery and follow-up observations of a sample of gravitationally-lensed massive quiescent galaxies at z~2 are presented. Using lensing magnification, we have spatially resolved the stellar kinematics of these galaxies, the first such measurements at these redshifts.
Richard S. Ellis, S. Belli, Drew Newman, Brendon Brewer   +3 more
openaire   +3 more sources