Results 111 to 120 of about 4,577,009 (388)
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 +2 more
doaj +1 more source
Monte-Carlo experiments on star-cluster induced integrated-galaxy IMF variations [PDF]
, 2004 As most if not all stars are born in stellar clusters the shape of the mass function of the field stars is not only determined by the initial mass function of stars (IMF) but also by the cluster mass function (CMF). In order to quantify this Monte-Carlo simulations were carried out by taking cluster masses randomly from a CMF and then populating these ...
arxiv +1 more source
Mass Segregation and the Initial Mass Function of Super Star Cluster M82-F [PDF]
Astrophys.J. 621 (2005) 278-284, 2004 We investigate the Initial Mass Function and mass segregation in super star cluster M82-F with high resolution Keck/NIRSPEC echelle spectroscopy. Cross-correlation with template supergiant spectra provides the velocity dispersion of the cluster, enabling measurement of the kinematic (virial) mass of the cluster when combined with sizes from NICMOS and ...
arxiv +1 more source
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 +4 more
semanticscholar +1 more source
Constraining the low-mass end of the Initial Mass Function with Gravitational Lensing [PDF]
, 2010 The low-mass end of the stellar Initial Mass Function (IMF) is constrained by focusing on the baryon-dominated central regions of strong lensing galaxies. We study in this letter the Einstein Cross (Q2237+0305), a z=0.04 barred galaxy whose bulge acts as
Andersen +39 more
core +1 more source
Autophagy in cancer and protein conformational disorders
FEBS Letters, EarlyView.Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley +1 more source
The Astrophysical JournalThe 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 +3 more
doaj +1 more source
Building up the Population III initial mass function from cosmological initial conditions [PDF]
, 2016 We simulate the growth of a Population III stellar system, starting from cosmological initial conditions at z=100. We follow the formation of a minihalo and the subsequent collapse of its central gas to high densities, resolving scales as small as ~ 1 AU.
A. Stacy, V. Bromm, Aaron T. Lee
semanticscholar +1 more source
, 2010 We have studied the star formation history and the initial mass function (IMF) using the age and mass derived from spectral energy distribution (SED) fitting and from color-magnitude diagrams.
Bessell, M. S., Sung, Hwankyung
core +1 more source
On the mass-to-light ratio and the initial mass function in disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 A low mass-to-light ratio for the stellar component of spiral galaxies (M/L<1 in the I-band) is advocated by various dynamical arguments and by recent cosmological simulations of the formation of these systems. We discuss this possibility by means of chemo-photometric models for galactic discs, adopting different Initial Mass Functions. We show that
Portinari, L. +2 more
openaire +3 more sources