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Four-colour photometry of eclipsing binaries. XL, uvby light curves for the B-type systems DW Carinae, BF Centauri, AC Velorum, and NSV 5783

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Clausen, J. V., Helt, B. E., Giménez, Alvaro, Vaz, L. P. R., García, J. M., Olsen, E. H. and Southworth, J. (John). (2007) Four-colour photometry of eclipsing binaries. XL, uvby light curves for the B-type systems DW Carinae, BF Centauri, AC Velorum, and NSV 5783. Astronomy & Astrophysics, Vol.461 (No.3). pp. 1065-1075. ISSN 0004-6361

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Official URL: http://dx.doi.org/10.1051/0004-6361:20065613

Abstract

Aims. In order to increase the limited number of B-stars with accurately known dimensions, and also the number of well studied eclipsing binaries in open clusters, we have undertaken observations and studies of four southern double-lined eclipsing B-type binaries; DWCar, BF Cen, ACVel, and NSV 5783.
Methods. Complete uvby light curves were observed between January 1982 and April 1991 at the Danish 0.5 m telescope at ESO La Silla, since 1985 known as the Strömgren Automatic Telescope (SAT). Standard indices for the systems and the comparison stars,as well as additional minima observations for ACVel, have been obtained later at SAT. For DWCar and ACVel, high-resolution spectra for definitive spectroscopic orbits have also been obtained; they are presented as part of the detailed analyses of these systems.
A few spectra of NSV 5783 are included in the present paper.
Results. For all four systems, the first modern accurate light curves have been established. DWCar is a detached system consisting of two nearly identical components. It is member of the young open cluster Cr228. A detailed analysis, based on the new light curves and 29 high-resolution spectra, is published separately. BFCen is semidetached and is member of NGC 3766. Modern spectra are
needed for a detailed study. ACVel is a detached system with at least one more star. A full analysis, based on the new light curves and 18 high-resolution spectra, is published separately. NSV 5783 is discovered to be an eclipsing binary consisting of two well-detached
components in an 11-day period eccentric (e = 0.18) orbit. Secondary eclipse is practically total. From the light curves and a few high-resolution spectra, accurate photometric elements and preliminary absolute dimensions have been determined. The quite similar components have masses of about 5 M and radii of about 3.5 R, and they seem to have evolved just slightly off the ZAMS. The
measured rotational velocities (≈150 km s−1) are about 6 times those corresponding to pseudosynchronization.

Item Type:

Journal Article

Subjects:

Q Science > QB Astronomy

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Eclipsing binaries, Be stars, Stars -- Open clusters

Journal or Publication Title:

Astronomy & Astrophysics

Publisher:

EDP Sciences

ISSN:

0004-6361

Official Date:

January 2007

Dates:

Date	Event
January 2007	Published

Volume:

Vol.461

Number:

No.3

Page Range:

pp. 1065-1075

Identification Number:

10.1051/0004-6361:20065613

Status:

Peer Reviewed

Access rights to Published version:

Open Access

Funder:

Instrumentcenter for Dansk Astrofysik [Instrument Centre for Danish Astrophsics] (IDA), Danmarks Grundforskningsfond [Danish National Research Foundation], Denmark. Astronomisk udvalg [Board for Astronomical Research], Consejo Superior de Investigaciones Científicas (Spain), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), Financiadora de Estudos e Projetos (Brazil) (FINEP)

References:

Andersen, J. 1975, A&A, 45, 203
Andersen, J. 1991, A&AR, 3, 91
Andersen, J., & Grønbech, B. 1975, A&A, 45, 107
Andersen, J., & Clausen, J. V. 1989, A&A, 213, 183
Buckley, D. A. H. 1982, MSc Thesis, University of Canterbury, New Zealand
Claret, A. 1995, A&AS, 109, 441
Claret, A. 2000, A&A, 363, 1081
Clausen, J. V., & Giménez, A. 1987, 10th European Regional Astronomy
Meeting of the IAU, Evolution of Galaxies, ed. J. Palous, 185
Clausen, J. V., & Giménez, A. 1991, A&A, 241, 98
Clausen, J. V., Helt, B. E., Garcia, J. M., et al. 1996, in The Origins, Evolution,
and Destinies of Binary Stars in Clusters, ed. E. F. Milone, & J.-C.
Mermilliod, ASP Conf. Ser., 90, 154
Crawford, D. L. 1978, AJ, 83, 48
Davis, J., & Shobbrook, R. R. 1977, MNRAS, 178, 651
Etzel, P. B. 1981, in Photometric and Spectroscopic Binary Systems, ed. E. B.
Carling, & Z. Kopal,
Feinstein, A., Marraco, H. G., & Forte, J. C. 1976, A&AS, 24, 389
Ferrer, O. E., Niemela, V. S., Méndez, R. H., Levato, H., & Morrell, N. 1985,
Rev. Mex. Astron. Astrofis., 10, 323
Florentin Nielsen, R. 1983, Inst. Theor. Astrophys. Oslo Report No. 59, ed. O.
Hauge, 141
Flower, P. J. 1996, ApJ, 469, 355
Gaposchkin, S. 1952, Harvard Annals, 115(5), 61 (actually published 1946)
Gaposchkin, S. 1953, Harvard Annals, 113(2), 69
Gies, D. R. 2003, in A Massive Star Odyssey: From Main Sequence to
Supernova, ed. K. A. van der Hucht, A. Herrero, & C. Esteban, IAU Symp.,
212, 91
Giménez, A. 1995, Experimental Astron., 5, 91
Giménez, A., & Clausen, J. V. 1994, A&A 291, 795
Giménez, A., & Clausen, J. V. 1996, in The Origins, Evolution, and Destinies of
Binary Stars in Clusters, ed. E. F. Milone, & J.-C. Mermilliod, ASP. Conf.
Ser., 90, 44
Giménez, A., Clausen, J. V., & Andersen, J. 1986, A&A, 160, 310
Grønbech, B., & Olsen, E. H. 1976, A&AS, 25, 213
Grønbech, B., & Olsen, E. H. 1977, A&AS, 27, 443
Grønbech, B., Olsen, E. H., & Strömgren, B. 1976, A&AS, 26, 155
Heck, A., & Manfroid, J. 1980, A&AS, 42, 311
Helt, B., Andersen, J., & Kämper, B.-C. 1989, Space Sci. Rev., 50, 346
Hertzsprung, E. 1924, Bull. Astron. Inst. Neth., 2, 165
Hertzsprung, E. 1926, BAN, 3, 109
Hilditch, R. W. 2004, ASP Conf. Ser., 318, 198
Hilditch, R. W., & Bell, S. A. 1987, MNRAS, 229, 529
Iliji´c, S., Freyhammer, L. M., Helt, B. E., et al. 2004, ASP Conf. Ser., 318, 242
Johansen, K. T., Helt, B. E., & Clausen, J. V. 1997, Inf. Bull. Var. Stars, 4520
Kaltcheva, N. T. 1998, A&AS, 128, 309
Kaltcheva, N. T., & Olsen, E. H. 1999, A&A, 352, 600
Kaltcheva, N. T., Olsen, E. H., & Clausen, J. V. 1999, A&A, 352, 605
Kaltcheva, N. T., Olsen, E. H., & Clausen, J. V. 2000, A&AS, 146, 365
Kaufer, A., Stahl, O., Tubbesing, S., et al. 1999, The ESO Messenger, 95, 8
Kaufer, A., Stahl, O., Tubbesing, S., et al. 2000, in Optical and IR Telescope
Instrumentation and Detectors, ed. M. Iye, & A. F. Morwood, Proc. SPIE,
4008, 459
Kilkenny, D. 1978, MNRAS, 182, 629
Kilkenny, D. 1981, MNRAS, 194, 927
Knude, J. 1992, A&AS, 92, 841
Kraft, R. P., & Landolt, A. U. 1959, AJ, 129, 287
Kwee, K. K., & van Woerden, H. 1956, BAN, 12, 327
Lafler, J., & Kinman, T. D. 1965, ApJS, 11, 216
Landolt, A. U., Perry, C. L., Levato, H., & Malaroda, S. M. 1990, AJ, 100, 695
Martynov, D. Ya. 1973, in Eclipsing Variable Stars, ed. V. P. Tsesevich, Israel
Program for Scientific Translation, Jerusalem
Napiwotzki, R., Schönberner, D., & Wenske, V. 1993, A&A, 268, 653
Nelson, B., & Davis, W. 1972, ApJ, 174, 617
Nordlund, Å., & Vaz, L. P. R. 1990, A&A, 228, 231
Ogloza, W., & Zakrzewski, B. 2004, Inf. Bull. Var. Stars, 5507
Olsen, E. H. 1977, A&A, 58, 217
Olsen, E. H. 1993, A&AS, 102, 89
Olsen, E. H. 1994a, A&AS, 104, 429
Olsen, E. H. 1994b, A&AS, 106, 257
Oosterhoff, P. T. 1928, BAN, 4, No. 148, 183
Oosterhoff, P. T. 1930, BAN, 5, No. 1156, 156
Pojma´nski, G. 1998, Acta Astron., 48, 35
Popper, D. M. 1966, AJ, 71, 175
Popper D. M., & Etzel, P. B. 1981, AJ, 86, 102
Ribas, I., Jordi, C., & Giménez, A. 2000, MNRAS, 318, L55
Sahade, J., & Dávila, B. F. 1963, Ann. Astrophys., 26, 153
Shobbrook, R. R. 1985, MNRAS, 212, 591
Slawson, R. W., Hill, R. J., & Landstreet, J. D. 1992, ApJS, 82, 117
Southworth, J., & Clausen, J. V. 2007, A&A, 461, 1077
Southworth, J., Maxted, P. F. L., & Smalley, B. 2004a, MNRAS, 349, 547
Southworth, J., Maxted, P. F. L., & Smalley, B. 2004b, MNRAS, 351, 1277
Strohmeier, W. 1972, Inf. Bull. Var. Stars, 610
Turner, D. G., & Moffat, A. F. G. 1980, MNRAS, 192, 283
Twarog, B. A., & Anthony-Twarog, B. J. 1995, AJ, 109, 2828
van den Hoven van Genderen, E. 1941, Bull. Astron. Inst. Neth. 9, 200
Vaz, L. P. R. 1984, Ph.D. Thesis, Copenhagen University, unpublished
Vaz, L. P. R. 1986, Rev. Mex. Astron. Astrofis., 12, 177
Vaz, L. P. R., & Nordlund, Å. 1985, A&A, 147, 281
Vaz, L. P. V., Andersen, J., & Rabello Soares, M. C. A. 1995, A&A, 301, 693
Wolf, G. W., & Kern, J. T. 1983, ApJS, 52, 429
Wolf, G. W., & Ratzlaff, P. W. 1994, Inf. Bull. Var. Stars, 4018
Wood, D. B. 1971, AJ, 76, 701
Wood, D. B. 1972, A Computer Program for Modeling Non-Spherical Eclipsing
Binary Star Systems, Goddard Space Flight Center, Greenbelt, Maryland