Variable stars as tracers of stellar populations in Local Group galaxies: Leo I and NGC 6822Reportar como inadecuado



 Variable stars as tracers of stellar populations in Local Group galaxies: Leo I and NGC 6822


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Results are presented of a study of the variable star populations in the dwarf spheroidal galaxy Leo I and in the dwarf irregular galaxy NGC 6822, based on time series photometry obtained with the Wide Field Imager of the 2.2 m ESO-MPI telescope Leo I and the Very Large Telescope NGC 6822. We found about 250 lower limit variables in Leo I most of which are RR Lyrae stars. In NGC 6822 we identified 450 candidate variables among which about 20 are RR Lyrae stars, and many are low-luminosity, small-amplitude Cepheids.



Autor: L. Baldacci; F. Matonti; L. Rizzi; G. Clementini; E. V. Held; Y. Momany; L. Di Fabrizio; I. Saviane

Fuente: https://archive.org/







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