Results 81 to 90 of about 2,806,307 (206)
A new scenario of galaxy evolution under a universal IMF
, 1997 In this paper, basic observational properties of elliptical galaxies such as the integrated spectra, the chemical abundances and the enhancement of $ $-elements inferred from broad-band colors and line strength indices $Mg_2$ and $< Fe >$ (and their gradients), the color-magnitude relation, the UV fluxes, and the mass-luminosity ratios, are ...
Chiosi, C. +3 more
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Constraining the Initial Mass Function via Stellar Transients
UniverseThe stellar initial mass function (IMF) represents a fundamental quantity in astrophysics and cosmology describing the mass distribution of stars from low mass all the way up to massive and very massive stars. It is intimately linked to a wide variety of
Francesco Gabrielli +6 more
doaj +1 more source
The interplanetary magnetic field influences mid-latitude surface atmospheric pressure
Environmental Research Letters, 2013 The existence of a meteorological response in the polar regions to fluctuations in the interplanetary magnetic field (IMF) component B _y is well established.
M M Lam, G Chisham, M P Freeman
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An Optimized VMD Method for Predicting Milling Cutter Wear Using Vibration Signal
Machines, 2022 Tool wear has a negative impact on machining quality and efficiency. As for the nonlinear and non-stationary characteristics of vibration signals and strong background noises during the milling process, an identification method of the milling cutter wear
Hao Chang +5 more
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The Dawes Review 8: Measuring the Stellar Initial Mass Function
, 2018 The 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.
Hopkins, A. M.
core +1 more source
Monthly notices of the Royal Astronomical SocietyWe use the Cosmic Archaeology Tool (CAT) semi-analytical model to explore the contribution of Population (Pop) III/II stars and active galactic nuclei (AGNs) to the galaxy UV luminosity function (LF) evolution at 4 ≤ z ≤ 20.
Alessandro Trinca +6 more
semanticscholar +1 more source
The Initial Mass Function of the Galactic Early-type Field Stars Based on the LAMOST Survey
The Astrophysical JournalResearch on the high-mass end of the initial mass function (IMF) has been limited due to a scarcity of samples. Recently, Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), as the most efficient spectroscopic telescope, has provided new ...
Qida Li +6 more
doaj +1 more source
The IMF of Extremely Metal-Poor Stars and the Probe into the Star-Formation Process of the Milky Way
, 2007 We discuss the star formation history of the Galaxy, based on the observations of extremely metal-poor stars (EMP) in the Galactic halo, to gain an insight into the evolution and structure formation in the early universe.
Fujimoto, Masayuki Y. +3 more
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, 1999 20 pages, to be published in "The evolution of Galaxies on Cosmological Timescales," ed. J.E. Beckman and T.J.
openaire +2 more sources
The Astrophysical JournalIn this study, we investigated the role of interplanetary magnetic field (IMF) orientation in controlling the location and structure of the current sheet (CS) in the Martian magnetotail.
Yuanzheng Wen +5 more
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