5 papers
Intermittent Jolts of Galactic UV Radiation: Mutagenetic Effects
John M. Scalo, J. Craig Wheeler, Peter Williams
We estimate the frequency of intermittent hypermutation events and disruptions of planetary/satellite photochemistry due to ultraviolet radiation from core collapse supernova explo…
Chemical enrichment and star formation in the Milky Way disk; II. Star formation history
H. J. Rocha-Pinto, John Scalo, W. J. Maciel +1
A chromospheric age distribution of 552 late-type dwarfs is transformed into a star formation history by the application of scale height corrections, stellar evolutionary correctio…
Chemical enrichment and star formation in the Milky Way disk; I. Sample description and chromospheric age-metallicity relation
H. J. Rocha-Pinto, W. J. Maciel, John Scalo +1
The age-metallicity relation of the solar neighbourhood is studied using a sample of 552 late-type dwarfs. This sample was built from the intersection of photometric catalogues wit…
Commentary on "The Theory of the Fluctuations in Brightness of the Milky Way. V" by S. Chandrasekhar and G. Munch (1952)
John Scalo
The series of papers by Chandrasekhar and Munch in the 1950s were concerned with the use of statistical models to infer the properties of interstellar clouds based on the observed…
The IMF Revisited: A Case for Variations
John Scalo
A survey of results concerning the IMF derived from star counts is presented, including work up to, but not including, that presented in these proceedings. The situation regarding…