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New Whole Earth Telescope observations of CD-24 7599: steps towards δ Scuti star seismology

Handler, G. ; Pikall, H. ; O'Donoghue, D. ; Buckley, D. A. H. ; Vauclair, G. ; Chevreton, M. ; Giovannini, O. ; Kepler, S. O. ; Goode, P. R. ; Provencal, J. L. ; Wood, M. A. ; Clemens, J. C. ; O'Brien, M. S. ; Nather, R. E. ; Winget, D. E. ; Kleinman, S. J. ; Kanaan, A. ; Watson, T. K. ; Nitta, A. ; Montgomery, M. H. ; Klumpe, E. W. ; Bradley, P. A. ; Sullivan, D. J. ; Wu, K. ; Marar, T. M. K. ; Seetha, S. ; Ashoka, B. N. ; Mahra, H. S. ; Bhat, B. C. ; Babu, V. C. ; Leibowitz, E. M. ; Hemar, S. ; Ibbetson, P. A. ; Mashal, E. ; Meistas, E. G. ; Dziembowski, W. A. ; Pamyatnykh, A. A. ; Moskalik, P. ; Zola, S. ; Pajdosz, G. ; Krzesinski, J. ; Solheim, J. E. ; Bard, S. ; Massacand, C. M. ; Breger, M. ; Gelbmann, M. J. ; Paunzen, E. ; North, P.

In: Monthly Notices of the Royal Astronomical Society, 1997, vol. 286, no. 2, p. 303-314

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    Titre
    • New Whole Earth Telescope observations of CD-24 7599: steps towards δ Scuti star seismology
    Auteur
    • Handler, G.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • Pikall, H.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • O'Donoghue, D.. Department of Astronomy, University of Cape Town, Rondebosch 7700, South Africa
    • Buckley, D. A. H.. South African Astronomical Observatory, PO Box 9, Observatory 7935, South Africa
    • Vauclair, G.. Observatoire Midi-Pyrenees, 14 Avenue E. Belin, 31400 Toulouse, France
    • Chevreton, M.. Observatoire de Paris-Meudon, F-92195 Meudon, Principal Cedex, France
    • Giovannini, O.. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre-RS, Brazil
    • Kepler, S. O.. Instituto de Fisica, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre-RS, Brazil
    • Goode, P. R.. Department of Physics, New Jersey Institute of Technology, Newark NJ 07102, USA
    • Provencal, J. L.. Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
    • Wood, M. A.. Department of Physics and Space Sciences, Florida Institute of Technology, 150 W. University Blvd. Melbourne, FL 32901, USA
    • Clemens, J. C.. Department of Physics and Astronomy, Iowa State University, Ames, IA 50211, USA
    • O'Brien, M. S.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • Nather, R. E.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Winget, D. E.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Kleinman, S. J.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Kanaan, A.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Watson, T. K.. Department of Physics and Astronomy, Iowa State University, Ames, IA 50211, USA
    • Nitta, A.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Montgomery, M. H.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Klumpe, E. W.. Department of Astronomy and McDonald Observatory, University of Texas, Austin, TX 78712, USA
    • Bradley, P. A.. Los Alamos National Laboratory, XTA, MS B220, Los Alamos, NM 87545, USA
    • Sullivan, D. J.. Physics Department, Victoria University of Wellington, PO Box 600, Wellington, New Zealand
    • Wu, K.. Department of Mathematics, Australian National University, Canberra, Australia
    • Marar, T. M. K.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Seetha, S.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Ashoka, B. N.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Mahra, H. S.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Bhat, B. C.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Babu, V. C.. Indian Space Research Organization, Technical Physics Division, ISRO Satellite Centre, Airport Road, Bangalore 560017, India
    • Leibowitz, E. M.. Wise Observatory, Sadder Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    • Hemar, S.. Wise Observatory, Sadder Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    • Ibbetson, P. A.. Wise Observatory, Sadder Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    • Mashal, E.. Wise Observatory, Sadder Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
    • Meistas, E. G.. Institute of Theoretical Physics and Astronomy, Gostauto 12, Vilnius 2600, Lithuania
    • Dziembowski, W. A.. Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland
    • Pamyatnykh, A. A.. Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland
    • Moskalik, P.. Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland
    • Zola, S.. Mount Suhora Observatory, Krakow Pedagogical University, ul. Podchorăiych 2, 30-084 Cracow, Poland
    • Pajdosz, G.. Mount Suhora Observatory, Krakow Pedagogical University, ul. Podchorăiych 2, 30-084 Cracow, Poland
    • Krzesinski, J.. Mount Suhora Observatory, Krakow Pedagogical University, ul. Podchorăiych 2, 30-084 Cracow, Poland
    • Solheim, J. E.. Institua for Matematiske Realfag, Nordlysobservatoriet, Universitet i Tromsø, 9000 Tromsø, Norway
    • Bard, S.. Institua for Matematiske Realfag, Nordlysobservatoriet, Universitet i Tromsø, 9000 Tromsø, Norway
    • Massacand, C. M.. Institua for Matematiske Realfag, Nordlysobservatoriet, Universitet i Tromsø, 9000 Tromsø, Norway
    • Breger, M.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • Gelbmann, M. J.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • Paunzen, E.. Institut für Astronomie, Universität Wien, Türkenschanzstraβe 17, A-1180 Wien, Austria
    • North, P.. Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 1997, vol. 286, no. 2, p. 303-314. Blackwell Science Ltd
    Autre version électronique
    Classification
    • Astronomie, Astrophysique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:302004
    Summary
    92 h of new Whole Earth Telescope observations have been acquired for the δ Scuti star CD-24 7599. All the seven pulsation modes reported by Handler et al. are confirmed. However, significant amplitude variations which are not caused by beating of closely spaced frequencies occurred within two years. Analysing the combined data of both WET runs, we detect six further pulsation modes, bringing the total number up to 13. We also examine our data for high-frequency pulsations similar to those exhibited by rapidly oscillating Ap stars, but we do not find convincing evidence for variability in this frequency domain