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Pulsating stars in the open cluster NGC 1817

Published online by Cambridge University Press:  12 April 2016

T. Arentoft ,
L.M. Freyhammer ,
M.Y. Bouzid ,
C. Sterken  and
S. Frandsen
T. Arentoft
Affiliation:
Aarhus Universitet, Ny Munkegade, DK-8000 Aarhus C, Denmark Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
L.M. Freyhammer
Affiliation:
Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium Koninklijke Sterrenwacht, Ringlaan 3, B-1180 Brussels, Belgium
M.Y. Bouzid
Affiliation:
Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
C. Sterken
Affiliation:
Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
S. Frandsen
Affiliation:
Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium

Abstract

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We report on new CCD observations of the open cluster NGC 1817, obtained as part of a program to search for pulsating stars in clusters. In a previous study, several δ Sct stars were found in NGC 1817 and our observations confirm that NGC 1817 is a special cluster, as we detected 19 variable stars. Twelve of these are most likely δ Sct stars of which 11 seem to be cluster members. One is also an eclipsing binary.

Type
Part 4. Early-type stars: B, A and F pulsators
Information
International Astronomical Union Colloquium , Volume 193: Variable Stars in the Local Group , 2004 , pp. 242 - 246
Copyright
Copyright © Astronomical Society of the Pacific 2004

References

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