Results 361 to 370 of about 6,178,117 (397)
Identification of a turnover in the initial mass function of a young stellar cluster down to 0.5 MJ
De Furio M +13 more
europepmc +1 more source
Primordial Rotating Disk Composed of ≥15 Star Forming Clumps at Cosmic Dawn
Fujimoto S +45 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
European Journal of Physics, 2003
We describe an undergraduate experiment that can be used to place the Sun in context with the properties of our nearest stellar neighbours. Using stars selected on the basis of their trigonometric parallaxes and spreadsheet software, the Hertzsprung–Russell diagram and luminosity function are constructed for stars within 16 pc, showing that the Sun is ...
K. H. Elliott, R. D. Jeffries
openaire +2 more sources
We describe an undergraduate experiment that can be used to place the Sun in context with the properties of our nearest stellar neighbours. Using stars selected on the basis of their trigonometric parallaxes and spreadsheet software, the Hertzsprung–Russell diagram and luminosity function are constructed for stars within 16 pc, showing that the Sun is ...
K. H. Elliott, R. D. Jeffries
openaire +2 more sources
Comprehensive stellar population models and the disentanglement of age and metallicity effects
, 1994The construction of detailed models for intermediate and old stellar populations is described. Input parameters include metallicity (-2 less than (Fe/H) less than 0.5), single-burst age (between 1.5 and 17 Gyr), and initial mass function (IMF) exponent ...
G. Worthey
semanticscholar +1 more source
On the local stellar populations
Monthly Notices of the Royal Astronomical Society, 2016We present a study of the local stellar populations from a volume-complete all-sky survey of the about 500 bright stars with distances less than 25 pc and down to main-sequence effective temperatures T-eff >= 5300 K. The sample is dominated by a 93 per cent fraction of Population I stars, only 22 sources (5 per cent) are Population II stars, and 9 ...
Rolf Chini +5 more
openaire +2 more sources
Stellar Evolution and Stellar Populations in Galaxies
1992Models of population synthesis are resting on an ensemble of other models, data and assumptions, in particular the models of stellar evolution, the data on initial compositions, the data on stellar spectra, the initial mass function (IMF), the star formation rate (SFR), the infall rate, etc… Here we shall concentrate on the properties of stellar models
openaire +2 more sources
Summary on stellar populations
Proceedings of the International Astronomical Union, 2005ELTs will bring galaxies within 5 Mpc or more “as close as the Magellanic Clouds”. This is why stellar populations is such an exciting subject for ELTs. We can resolve galaxies into stars and learn their history (1) from the “fossil record” of old stars and (2) looking back in time. The confrontation of these two views will bring important new insights
openaire +2 more sources
Stellar Populations in Galaxies
Publications of the Astronomical Society of the Pacific, 1971This article reviews present-day knowledge of stellar populations and the relation of populations to the forms of galaxies. A historical outline of the concept of populations is followed by a summary of the present picture. After a discussion of the distribution of populations in the various types of galaxies, it is shown that the whole picture can be ...
openaire +2 more sources
Stellar Populations and Mergers
1990Our Galaxy has four stellar populations: the disk, the thick disk, the bulge, and the halo. Did they form out of a single proto-Galactic nebula, with each population being but a different stage in the process? Or have at least some of them nothing to do with the origins and evolution of the others, as expected from mergers?
openaire +2 more sources
Cancer statistics for the US Hispanic/Latino population, 2021
Ca-A Cancer Journal for Clinicians, 2021Kimberly D Miller +2 more
exaly