The frequency ratio method and the new multiperiodic gamma Doradus star HD 218427

Rodríguez, E.; Amado, P. J.; Suárez, J. C.; Moya, A.; Dupret, Marc-Antoine; Poretti, E.; Grigahcène, A.; Costa, V.; López-González, M. J.

doi:10.1051/0004-6361:20053942

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The frequency ratio method and the new multiperiodic gamma Doradus star HD 218427

Rodríguez, E.; Amado, P. J.; Suárez, J. C. et al.

2006 • In Astronomy and Astrophysics, 450, p. 715-723

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https://hdl.handle.net/2268/75442

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10.1051/0004-6361:20053942

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Keywords :

stars: variables: general; stars: individual: HD 218427; stars: oscillations; techniques: photometric

Abstract :

[en] Oscillations of gamma Dor-type were discovered in the star HD 218427 through simultaneous uvby photometric observations carried out in the year 2003. A few Hbeta-Crawford measurements were also collected for calibration purposes and they locate this star well inside the gamma Dor instability region. We find HD 218427 to be deficient in metals, similar to other well-defined gamma Dor stars, and discuss the possibility that it has a lambda Boo nature. We carried out frequency analysis for different filters, including the combined "vby" filter, and five frequencies were found as significant with periods ranging between 0.3 and 0.8 days. The recently-developed frequency ratio method is used in order to identify the excited modes. The results are consistent with an l=2 identification for all the modes and with high radial quantum numbers (nË 40) for the three main observed periodicities. The possibility of multiplet structures is also discussed. However, no consistency is found when using the time-dependent convection treatment to discriminate modes. This disagreement can be due to the large rotation velocity taking place in HD 218427 and, consequently, the significant coupling between the modes.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Rodríguez, E.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain

Amado, P. J.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain ; European Southern Observatory, Alonso de Cordova 3107, Santiago 19, Chile

Suárez, J. C.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain ; LESIA, Observatoire de Paris-Meudon, UMR 8109, 92190 Meudon, France

Moya, A.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain ; LESIA, Observatoire de Paris-Meudon, UMR 8109, 92190 Meudon, France

Dupret, Marc-Antoine ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique

Poretti, E.; INAF-Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate, Italy

Grigahcène, A.; CRAAG, Algiers Observatory, BP 63 Bouzareah, 16340 Algiers, Algeria

Costa, V.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain

López-González, M. J.; Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain

Language :

English

Title :

The frequency ratio method and the new multiperiodic gamma Doradus star HD 218427

Publication date :

01 May 2006

Journal title :

Astronomy and Astrophysics

ISSN :

0004-6361

eISSN :

1432-0746

Publisher :

EDP Sciences, Les Ulis, France

Volume :

450

Pages :

715-723

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://adsabs.harvard.edu/abs/2006A%26A...450..715R

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Alexander, D. R., & Ferguson, J. W. 1994, ApJ, 437, 879
Andrievsky, S. M. 1997, A&A, 321, 838
Asplund, M., Grevesse, N., & Sauval, A. J. 2005, PASPC, 336, 25
Balona, L. A., Hearnshaw, J. B., Koen, C., et al. 1994, MNRAS, 267, 103
Breger, M., Stich, J., Garrido, R., et al. 1993, A&A, 271, 482
Breger, M., Handler, G., Garrido, R., et al. 1999, A&A, 349, 225
Charbonneau, P. 1993, ApJ, 405, 720
Claret, A., & Giménez, A. 1995, A&AS, 114, 549
Cuypers, J., & de Cat, P. 2005, A&A, submitted
Daszyńska-Daszkiewicz, J., Dziembowski, W. A., Pamyatnykh, A. A., & Goupil, M. J. 2002, A&A, 392, 151
Dupret, M. A., Grigahcène, A., Garrido, R., Gabriel, M., & Scuflaire, R. 2005a, A&A, 435, 927
Dupret, M. A., Grigahcène, A., Garrido, R., et al. 2005b, MNRAS, 360, 1143
ESA 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200
Faraggiana, R., & Bonifacio, P. 1999, A&A, 349, 521
Glebocki, R., Gnacinski, P., & Stawikowski, A. 2000, Acta Astron., 50, 509
Gray, R. O. 1988, AJ. 95, 220
Gray, R. O., & Corbally, C. J. 1993, AJ, 106, 632
Gray, R. O., & Kaye, A. B. 1999, AJ, 118, 2993
Gray, R. O., & Corbally, C. J. 2002, AJ, 124, 989
Grigahcène, A., Dupret, M. A., Gabriel, M., Garrido, R., & Scuflaire, R. 2005a, A&A, 434, 1055
Grigahcène, A., Dupret, M. A., Garrido, R., & Gabriel, M. 2005b, Mem. Soc. Astron. It., in press
Handler, G. 1999, MNRAS, 309, L19
Handler, G. 2002, A catalogue of Gamma Doradus stars, http:// www.astro.univie.ac.at/~gerald/gdorlist.html
Handler, G., & Shobbrook, R. R. 2002, MNRAS, 333, 251
Handler, G., Balona, L. A., Shobbrook, R. R., et al. 2002, MNRAS, 333, 262
Hauck, B., & Mermilliod, M. 1998, A&AS, 129, 431
Henry, G. W., & Fekel, F. C. 2002, PASP, 114, 988
Henry, G. W., & Fekel, F. C. 2003, AJ, 126, 3058
Henry, G. W., & Fekel, F. C. 2005, AJ, 129, 2026
Iglesias, C. A., & Rogers, F. J. 1996, ApJ, 464, 943
Kaye, A. B., Handler, G., Krisciunas, K., Poretti, E., & Zerbi, F. 1999, PASP, 111, 840
Kippenhahn, R., & Weigert, A. 1990, Stellar Structure and Evolution, Astronomy and Astrophysics Library (Springer-Verlag)
Lenz, P., & Breger, M. 2005, CoAst, 146, 5
Mathias, P., Le Contel, J. M., Chapellier, E., et al. 2004, 417, 189
Michaud, G., & Charland, Y. 1986, ApJ, 311, 326
Montgomery, M. H., & O'Donoghue, D. 1999, Delta Scuti Star Newsletter, 13, 28
Morel, P. 1997, A&AS, 124, 597
Moya, A., Suárez, J. C., Amado, P. J., Martín-Ruiz, S., & Garrido, R. 2005a, A&A, 432, 189
Moya, A., Grigahcéne, A., Suárez, J. C., et al. 2005b, Mem. Soc. Astron. It., in press
Nielsen, R. F. 1983, Inst. Theor. Astrophys. Oslo Report No. 59, ed. O. Hauge, 141
Olsen, E. H. 1983, A&AS, 54, 55
Olsen, E. H. 1996, private communication
Rodríguez, E. 2005, PASPC, 333, 165
Rodríguez, E., & Breger, M. 2001, A&A, 366, 178
Rodríguez, E., González-Bedolla, S. F., Rolland, A., Costa, V., & López de Coca, P. 1997, A&A, 324, 959
Rodríguez, E., Rolland, A., López-González, M. J., & Costa, V. 1998, A&A, 338, 905
Rodríguez, E., López-González, M. J., & López de Coca, P. 2000, A&AS, 144, 469
Rodríguez, E., López-González, M. J., Rolland, A., Costa, V., & González-Bedolla, S. F. 2001, A&A, 376, 489
Rodríguez, E., Costa, V., Handler, G., & García, J. M. 2003, A&A, 399, 253
Rodríguez, E., et al. 2006, in preparation
Simbad 2005, Simbad Database, CDS, Strasbourg, France
Smalley, B., & Kupka, F. 1997, A&A, 328, 349
Suárez, J. C. 2002, Ph.D. Thesis
Suárez, J. C., Moya, A., Martín-Ruiz, S., et al. 2005, A&A, 443, 271
Tassoul, M. 1980, ApJS, 43, 469
Townsend, R. H. D. 2003, MNRAS, 343, 125
Tran Minh, F., & Léon, L. 1995, Phys. Process Astrophys., 219
Turcotte, S., & Charbonneau, P. 1993, ApJ, 413, 376
Vaniĉek, P. 1971, Ap&SS, 12, 10
Venn, K. A., & Lambert, D. L. 1990, ApJ, 363, 234
Zerbi, F. M., Garrido, R., Rodríguez, E., et al. 1997, MNRAS, 290, 401
Zerbi, F. M., Rodríguez, E., Garrido, R., et al. 1999, MNRAS, 303, 275