Results 71 to 80 of about 1,100,727 (344)
First JWST/NIRSpec Spectroscopy of O Stars in the Small Magellanic Cloud
The Astrophysical Journal LettersDetermining how much mass is removed by stellar winds is crucial to understanding massive star evolution and feedback. However, traditional spectroscopic diagnostics in the UV and optical are not sensitive enough to characterize weak stellar winds of OB ...
Armin Mang Román +12 more
doaj +1 more source
Particle-in-cell Simulations of Mildly Relativistic Outflows in Kilonova Emissions
The Astrophysical Journal, 2023 The electromagnetic emission from neutron star mergers is comprised of multiple components. Synchrotron emission from the disk-powered jet and thermal emission from the merger ejecta (powered by a variety of sources) are among the most studied sources ...
Mohira Rassel +5 more
doaj +1 more source
FEBS Letters, EarlyView.Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer +7 more
wiley +1 more source
Can Protostellar Outflows Set Stellar Masses?
The Astrophysical Journal, 2023 The opening angles of some protostellar outflows appear too narrow to match the expected core–star mass efficiency (SFE) = 0.3–0.5, if the outflow cavity volume traces outflow mass, with a conical shape and a maximum opening angle near 90°.
Philip C. Myers +2 more
doaj +1 more source
The chemical evolution of local star forming galaxies: Radial profiles of ISM metallicity, gas mass, and stellar mass and constraints on galactic accretion and winds [PDF]
, 2015 The radially averaged metallicity distribution of the ISM and the young stellar population of a sample of 20 disk galaxies is investigated by means of an analytical chemical evolution model which assumes constant ratios of galactic wind mass loss and ...
R. Kudritzki +7 more
semanticscholar +1 more source
FEBS Letters, EarlyView.Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur +5 more
wiley +1 more source
Detection of Metal Enrichment by SN 2011jm in NGC 4809
The Astrophysical Journal LettersCosmic metals are believed to originate from stellar and supernovae (SNe) nucleosynthesis, dispersed into the interstellar medium (ISM) through stellar winds and supernova explosions.
Yulong Gao +4 more
doaj +1 more source
Odessa Astronomical Publications, 2017 After a brief review of the modern understanding of stellar wind's action on the ISM we consider two aspects of its "global" collective effect from observational viewpoint.
T. A. Lozinskaya
doaj +1 more source
LATIS: The Stellar Mass–Metallicity Relation of Star-forming Galaxies at z ∼ 2.5
The Astrophysical Journal, 2023 We present the stellar mass–stellar metallicity relation for 3491 star-forming galaxies at 2 ≲ z ≲ 3 using rest-frame far-ultraviolet spectra from the Ly α Tomography IMACS Survey (LATIS).
Nima Chartab +4 more
doaj +1 more source
The orbital evolution of asteroids, pebbles and planets from giant branch stellar radiation and winds [PDF]
, 2015 The discovery of over 50 planets around evolved stars and more than 35 debris discs orbiting white dwarfs highlight the increasing need to understand small body evolution around both early and asymptotic giant branch (GB) stars. Pebbles and asteroids are
D. Veras, S. Eggl, B. Gaensicke
semanticscholar +1 more source