Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...368..580f&link_type=abstract
Astronomy and Astrophysics, v.368, p.580-592 (2001)
Astronomy and Astrophysics
Astrophysics
11
Stars: Delta Scuti, Evolution, Oscillations, (Galaxy:) Open Clusters And Associations: Individual: Ngc 7062
Scientific paper
The central field of NGC 7062 was observed intensively with the main goal of finding delta Scuti stars suitable for use in asteroseismological tests of stellar structure and evolution theory. BV time series photometry was obtained for this northern open cluster, which has a large population of stars inside the delta Scuti instability strip, making it a probable host of several such variables. We report findings of 15 pulsating stars, including at least 13 delta Scuti stars. Ten variables oscillate in two or more frequencies. Only one of these variables was known before, for which we detected 9 frequencies. Five probable variables are mentioned, and period analysis is given for all 20 stars. Based on observations obtained at the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisíca de Canarias.
Arentoft Torben
Freyhammer Lars Michael
Sterken Christiaan
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