Year: 2000
Type: article
Abstract: Unbiased analysis shows that IRAS data reliably differentiate between the early and late stages of stellar evolution because objects at these stages clearly segregate in infrared color-color diagrams. Structure in these diagrams is primarily controlled by the density distribution of circumstellar dust. The density profile around older objects is the steepest, declining as r-2, while young objects have profiles that vary as r-3/2 and flatter. The different density profiles reflect the different dynamics that govern the different environments. Our analysis also shows that high-mass star formation is strongly concentrated within approximately 5 kpc around the Galactic center, in support of other studies.
Source: The Astrophysical Journal
DOI: 10.1086/312641
Authors: Željko Ivezić, Moshe Elitzur
Institutions: Princeton University, University of Kentucky
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2096576939