Results 81 to 90 of about 1,635,352 (355)

Simulating the Collapse of Rotating Primordial Gas Clouds to Study the Possibility of the Survival of Population III Protostars

The Astrophysical Journal, 2023
It has been argued that the low-mass primordial stars ( m _Pop III ≤ 0.8 M _⊙ ) are likely to enter the main sequence and hence may possibly be found in present-day galaxies.
Shubham P. Raghuvanshi, Jayanta Dutta
doaj   +1 more source

Does turbulence determine the initial mass function? [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
6 pages, 7 figures, accepted to ...
James Wurster, James Wurster, Matthew R. Bate, David Liptai, Daniel J. Price   +4 more
openaire   +5 more sources

MUSE observations of M87: radial gradients for the stellar initial-mass function and the abundance of Sodium [PDF]

, 2017
Based on MUSE integral-field data we present evidence for a radial variation at the low-mass end of the stellar initial-mass function (IMF) in the central regions of the giant early-type galaxy NGC4486 (M87).
M. Sarzi, C. Spiniello, F. L. Barbera, D. Krajnovi'c, R. V. D. Bosch   +4 more
semanticscholar   +1 more source

Interaction vesicles as emerging mediators of host‐pathogen molecular crosstalk and their implications for infection dynamics

FEBS Letters, EarlyView.
Interaction extracellular vesicles (iEVs) are hybrid vesicles formed through host‐pathogen communication. They facilitate immune evasion, transfer pathogens' molecules, increase host cell uptake, and enhance virulence. This Perspective article illustrates the multifunctional roles of iEVs and highlights their emerging relevance in infection dynamics ...
Bruna Sabatke, Izadora Volpato Rossi, Marcel I. Ramirez   +2 more
wiley   +1 more source

Why is the Star Formation Rate Proportional to Dense Gas Mass?

The Astrophysical Journal
One 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, Fengwei Xu, Hauyu Baobab Liu, Yuxin Lin, Jingwen Wu, Zhi-Yu Zhang, Zhiqiang Yan, Di Li, Chao-Wei Tsai, Yongkun Zhang, Linjing Feng, Ke Wang, Zheng Zheng, Fanyi Meng, Hao Ruan, Fangyuan Deng, Keyun Su   +16 more
doaj   +1 more source

Evidence for Universality in the Initial Planetesimal Mass Function [PDF]

The Astrophysical Journal Letters, 2017
Abstract Planetesimals may form from the gravitational collapse of dense particle clumps initiated by the streaming instability. We use simulations of aerodynamically coupled gas–particle mixtures to investigate whether the properties of planetesimals formed in this way depend upon the sizes of the particles that participate in the ...
Jacob B. Simon, Jacob B. Simon, Jacob B. Simon, Andrew N. Youdin, Philip J. Armitage, Philip J. Armitage, Rixin Li   +6 more
openaire   +3 more sources

The optimally-sampled galaxy-wide stellar initial mass function - Observational tests and the publicly available GalIMF code [PDF]

, 2017
Here we present a full description of the integrated galaxy-wide initial mass function (IGIMF) theory in terms of the optimal sampling and compare it with available observations.
Zhiqiang Yan, T. Jeřábková, T. Jeřábková, P. Kroupa, P. Kroupa   +4 more
semanticscholar   +1 more source

Decoding the dual role of autophagy in cancer through transcriptional and epigenetic regulation

FEBS Letters, EarlyView.
Transcriptional and epigenetic regulation controls autophagy, which exerts context‐dependent effects on cancer: Autophagy suppresses tumorigenesis by maintaining cellular homeostasis or promotes tumor progression by supporting survival under stress. In this “In a Nutshell” article, we explore the intricate mechanisms of the dual function of autophagy ...
Young Suk Yu, Ik Soo Kim, Sung Hee Baek
wiley   +1 more source

A Modified Initial Mass Function of the First Stars with Explodability Theory under Different Enrichment Scenarios

The Astrophysical Journal
The most metal-poor stars record the earliest metal enrichment triggered by Population III stars. By comparing observed abundance patterns with theoretical yields of metal-free stars, physical properties of their first star progenitors can be inferred ...
Ruizheng Jiang, Gang Zhao, Haining Li, Qianfan Xing   +3 more
doaj   +1 more source

Stellar Initial Mass Function (IMF) Probed with Supernova Rates and Neutrino Background: Cosmic-average IMF Slope Is ≃2–3 Similar to the Salpeter IMF

The Astrophysical Journal, 2023
The stellar initial mass function (IMF) is expressed by ϕ ( m ) ∝ m ^− ^α with the slope α , and known as a poorly constrained but very important function in studies of star and galaxy formation. There are no sensible observational constraints on the IMF
Shohei Aoyama, Masami Ouchi, Yuichi Harikane   +2 more
doaj   +1 more source