Circumnuclear Regions of Star Formation in Early Type Galaxies
Angeles I. Diaz (1), Elena Terlevich (2), Guillermo F. Hagele (1),, Marcelo Castellanos (1) ((1)Departamento de Fisica Teorica, Universidad, Autonoma de Madrid, Spain (2)Instituto Nacional de Astrofisica, Optica y, Electronica, Puebla, Mexico)
TL;DR
This paper investigates the physical properties of star-forming regions near galaxy centers, analyzing spectrophotometric data to understand ionized gas characteristics and star formation processes in early type galaxies.
Contribution
It provides new spectrophotometric measurements of circumnuclear regions in early type galaxies, detailing their physical properties and star formation activity.
Findings
Massive stars dominate UV emission in circumnuclear regions.
Ionized gas shows specific electron densities and oxygen abundances.
Star formation occurs in intense, localized hotspots near galaxy centers.
Abstract
Circumnuclear star forming regions, also called hotspots, are often found in the inner regions of some spiral galaxies where intense processes of star formation are taking place. In the UV, massive stars dominate the observed circumnuclear emission even in the presence of an active nucleus, contributing between 30 and 50% to the H total emission of the nuclear zone. Spectrophotometric data of moderate resolution (3000 < R < 11000) are presented from which the physical properties of the ionized gas: electron density, oxygen abundances, ionization structure etc. have been derived.
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Taxonomy
TopicsAstrophysics and Star Formation Studies · Astronomy and Astrophysical Research · Stellar, planetary, and galactic studies