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Title:
The population I core of the Galaxy
Authors:
Allen, David; Burton, Michael
Affiliation:
AA(Anglo-Australian Observatory, Epping, Australia), AB(Anglo-Australian Observatory, Epping, Australia)
Publication:
Astronomical Society of Australia, Proceedings, vol. 11, no. 2, p. 191-193
Publication Date:
08/1994
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
Galactic Nuclei, Galactic Structure, Radio Sources (Astronomy), Stellar Luminosity, Stellar Mass, Carbon Monoxide, Emission Spectra, Helium, Milky Way Galaxy, Radio Astronomy
DOI:
10.1017/S1323358000019883
Bibliographic Code:
1994PASAu..11..191A

Abstract

We demonstrate the presence of a cluster of hot, population I stars at the very center of the Galaxy, using the depth of the first overtone band of CO and the presence of emission in He I 2.058 microns and (Fe II) 1.644 microns to identify stars. The cluster is very compact and comprises at least several hundred stars. They lie close to the nonthermal radio source Sgr A* and dominate the luminosity and mass loss of the Galactic core. Their presence suggests that a starburst occurred at the Galactic center.

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