Results 71 to 80 of about 5,183,495 (311)

ALMA Spectral Survey of an Eruptive Young Star, V883 Ori (ASSAY). I. What Triggered the Current Episode of Eruption?

open access: yesThe Astrophysical Journal
An unbiased spectral survey of V883 Ori, an eruptive young star, was carried out with the Atacama Large Millimeter/submillimeter Array in Band 6. The detected line emission from various molecules reveals morphological/kinematical features in both the ...
Jeong-Eun Lee   +9 more
doaj   +1 more source

Dynamics of Aggregation in Systems of Self-Propelled Rods

open access: yesEntropy
We highlight camphene–camphor–polypropylene plastic as a useful material for self-propelled objects that show aggregation while floating on a water surface.
Richard J. G. Löffler, Jerzy Gorecki
doaj   +1 more source

ASTROCHEMISTRY OF STAR FORMATION

open access: yesOdessa Astronomical Publications, 2013
Star formation is one of the key pro­cesses governing the evolution of the Universe. It is ac­companied by significant transformations in the chem­ical composition and the physical state of the inter­stellar medium. Combining observations in infrared and
D. S. Wiebe, O. V. Kochina
doaj   +1 more source

On the existence of accretion-driven bursts in massive star formation [PDF]

open access: yes, 2016
Accretion-driven luminosity outbursts are a vivid manifestation of variable mass accretion onto protostars. They are known as the so-called FU Orionis phenomenon in the context of low-mass protostars.
D. Meyer   +6 more
semanticscholar   +1 more source

Strangulation as the primary mechanism for shutting down star formation in galaxies [PDF]

open access: yesNature, 2015
Local galaxies are broadly divided into two main classes, star-forming (gas-rich) and quiescent (passive and gas-poor). The primary mechanism responsible for quenching star formation in galaxies and transforming them into quiescent and passive systems is
Yingjie Peng, R. Maiolino, R. Cochrane
semanticscholar   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

A Natural Laboratory for Astrochemistry: The Variable Protostar B335

open access: yesThe Astrophysical Journal Letters
Emission lines from complex organic molecules in B335 were observed in four epochs, spanning a luminosity burst of about 10 yr duration. The emission lines increased dramatically in intensity as the luminosity increased, but they have decreased only ...
Jeong-Eun Lee   +5 more
doaj   +1 more source

The SILCC project - IV. Impact of dissociating and ionizing radiation on the interstellar medium and Hα emission as a tracer of the star formation rate [PDF]

open access: yes, 2016
We present three-dimensional radiation-hydrodynamical simulations of the impact of stellar winds, photoelectric heating, photodissociating and photoionising radiation, and supernovae on the chemical composition and star formation in a stratified disc ...
T. Peters   +9 more
semanticscholar   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

open access: yesFEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz   +5 more
wiley   +1 more source

The Properties of an Edge-On Low Surface Brightness Galaxies Sample

open access: yesUniverse
We analyzed the properties of a sample of edge-on low-surface brightness galaxies, which are referred to as Cao23 ELSBGs. Cao23 ELSBGs exhibit a wide range of luminosities (−22 < Mr < −13) with a mean scale length of 3.19 ± 1.48 kpc.
Tian-Wen Cao   +7 more
doaj   +1 more source

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