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The Young Stars in IC 1613

Published online by Cambridge University Press:  25 May 2016

J. Borissova ,
L. Georgiev ,
M. Rosado ,
G. Koenigsberger ,
R. Kurtev  and
G. Ivanov
J. Borissova
Affiliation:
Institute of Astronomy, Bulgarian Academy of Sciences, 72 Tsarigradsko chaussèe, BG-1784 Sofia, Bulgaria
L. Georgiev
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México
M. Rosado
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México
G. Koenigsberger
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México, México
R. Kurtev
Affiliation:
Department of Astronomy, Sofia University, BG-1164 Sofia, Bulgaria
G. Ivanov
Affiliation:
Department of Astronomy, Sofia University, BG-1164 Sofia, Bulgaria

Abstract

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Deep UBV and JHK photometry of the stars in IC 1613 was used to investigate the stellar content in the H II regions of the northeast sector of the galaxy. The ages of nine of the associations outlined by Hodge (1978) were determined. A10 and A14 were found to be the youngest associations with ages of approximately 5 Myr, while A12, A18 and A19 were the oldest ones found, having a common age of approx. 20 Myr. Analysis of theoretical HR diagrams shows the presence of young massive stars in the associations, which have been born almost coeval. We have also found evidence of a difference between the slopes of the IMFs and differential LFs, between the group of associations embedded in gas and the group containing A12, A18 and A19, which are not affected by nebulosity.

Type
Part 2: The Database
Information
Symposium - International Astronomical Union , Volume 192: The Stellar Content of Local Group Galaxies , 1999 , pp. 259 - 262
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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