10 papers · 1 filter
The Formation and Evolution of Massive Star Clusters: Historical Overview
Sidney van den Bergh
Some factors connecting the evolutionary histories of galaxies with the characteristics of their cluster systems are reviewed. Unanswered questions include: How is one to understan…
History of the Local Group
Sidney van den Bergh
It is suggested that M31 was created by the early merger, and subsequent violent relaxation, of two or more massive metal-rich ancestral galaxies within the core of the Andromeda s…
A Short History of the Missing Mass and Dark Energy Paradigms
Sidney van den Bergh
In 1900 it was believed that almost 100% of the mass of the Universe resided in stars. Now, in the year 2000, such stars (and cold gas) are known to account for only ~1% its mass.…
The Local Group of Galaxies
Sidney van den Bergh
Hubble's view that the Local Group (LG) is "a typical, small group of nebulae which is isolated in the general field" is confirmed by modern data. The total number of certain and p…
Comments on the Paper "Fundamental Stellar Photometry for Standards of Spectral Type on the Revised System of the Yerkes Spectral Atlas " by H.L. Johnson and W.W. Morgan (1953)
Sidney van den Bergh
This short paper is to be published as part of the centennial celebrations of the American Astronomical Society. It presents some historical background on, and discusses the import…
Formation of the Milky Way
J. E. Hesser, P. B. Stetson, W. E. Harris +9
We review observational evidence bearing on the formation of a prototypical large spiral galaxy, the Milky Way. New ground- and space-based studies of globular star clusters and dw…