Results 71 to 80 of about 993,735 (252)
Discovery of a Rich Population of Compact Hub-filament Systems in a Single Star-forming Complex
The Astronomical JournalWe report the discovery of 45 compact hub-filament systems (HFSs; median size ∼2.4 pc) in infrared-dark clouds (IRDCs) in the W33 complex, located at the junction of the Scutum and Norma spiral arms.
L. K. Dewangan +6 more
doaj +1 more source
Dynamics of Aggregation in Systems of Self-Propelled Rods
EntropyWe 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
The Persistence of Population III Star Formation
, 2017 We present a semi-analytic model of star formation in the early universe, beginning with the first metal-free stars. By employing a completely feedback-limited star formation prescription, stars form at maximum efficiency until the self-consistently ...
Furlanetto, Steven R. +2 more
core +1 more source
Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10
FEBS Letters, EarlyView.Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang +8 more
wiley +1 more source
A Natural Laboratory for Astrochemistry: The Variable Protostar B335
The Astrophysical Journal LettersEmission 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
Playing with positive feedback: external pressure-triggering of a star-forming disc galaxy
, 2015 Feedback in massive galaxies generally involves quenching of star formation, a favored candidate being outflows from a central supermassive black hole.
Bieri, Rebekka +3 more
core +2 more sources
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
The Properties of an Edge-On Low Surface Brightness Galaxies Sample
UniverseWe 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
ASTROCHEMISTRY OF STAR FORMATION
Odessa 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
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Dynamically-Driven Star Formation In Models Of NGC 7252
, 2010 We present new dynamical models of the merger remnant NGC 7252 which include star formation simulated according to various phenomenological rules. By using interactive software to match our model with the observed morphology and gas velocity field, we ...
Barnes +36 more
core +1 more source