Results 61 to 70 of about 3,387,094 (327)
The Stellar Content of NGC 3603 Revisited: Is the IMF Top Heavy?
The Astrophysical JournalStudies of the resolved stellar populations of young massive clusters have shown that the slope of the initial mass function (IMF) appears to be the same everywhere, with no dependence on stellar density or metallicity.
Philip Massey +5 more
doaj +1 more source
Measuring the stellar initial mass function [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe birth of stars and the formation of galaxies are cornerstones of modern astrophysics. While much is known about how galaxies globally and their stars individually form and evolve, one fundamental property that affects both remains elusive.
openaire +1 more source
Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS Letters, EarlyView.Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani +4 more
wiley +1 more source
Constraining the z ∼ 1 Initial Mass Function with HST and JWST Lensed Stars in MACS J0416.1−2403
The Astrophysical JournalOur understanding of galaxy properties and evolution is contingent on knowing the initial mass function (IMF), and yet to date the IMF is constrained only to local galaxies.
Sung Kei Li +21 more
doaj +1 more source
The relationship between the prestellar core mass function and the stellar initial mass function [PDF]
Astronomy & Astrophysics, 2007 7 pages, 3 figures, A&A in ...
Goodwin, S. P. +4 more
openaire +4 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
Modeling the Near-Infrared Luminosity Functions of Young Stellar Clusters [PDF]
, 1999 We present the results of numerical experiments designed to evaluate the usefulness of near-infrared luminosity functions for constraining the Initial Mass Function (IMF) of young stellar populations.
August A. Muench +16 more
core +3 more sources
Why is the Star Formation Rate Proportional to Dense Gas Mass?
The Astrophysical JournalOne of the most profound empirical laws of star formation is the Gao–Solomon relation, a linear correlation between the star formation rate (SFR) and the dense molecular gas mass.
Sihan Jiao +16 more
doaj +1 more source
مجلة بغداد للعلومAmong the most important ways to investigate galaxies' distribution over cosmic time is the luminosity function LF in terms of baryonic disc mass ψS(Mb), magnitude .
Al Najm M.N. +2 more
doaj +1 more source
The Earliest Stage of Galactic Star Formation
The Astrophysical Journal Letters, 2023 Using a recently developed technique to estimate gas temperatures ( T _SF ) in star-forming regions from large photometric surveys, we propose a diagram, analogous to the Hertzsprung–Russell diagram for individual stars, to probe the evolution of ...
Charles L. Steinhardt +7 more
doaj +1 more source