Articles

 

V1135 Herculis: a double-lined eclipsing binary with an Anomalous Cepheid¹

 

E. Sipahi, C. İbanoğlu, Ö. Çakirh, H. A. Dal, and S. Evren

 

Astronomy and Space Sciences Department, Ege University, 35100 Bornova, İzmir, Turkey. (omur.cakirli@gmail.com, ali.dal@mail.ege.edu.tr, serdar@mail.ege.edu.tr, cafer.ibanoglu@mail.ege.edu.tr, esin.sipahi@mail.ege.edu.tr).

 

Received 2013 February 18.
Accepted 2013 April 29.

 

RESUMEN

Se obtuvieron curvas de luz en BVR y velocidades radiales para la binaria eclipsante de doble línea V1135 Her. Nuestro análisis de las curvas de luz en varios colores y de las velocidades radiales nos permitió la determinación de propiedades estelares fundamentales para ambas componentes de este interesante sistema. El sistema está formado por dos estrellas evolucionadas G1+K3, intermedias entre gigantes y supergigantes, con masas M₁= 1.461±0.054 M_☉, M₂ = 0.504±0.040 M_☉, y radios R₁ = 27.1 ±0.4 R_☉, R₂ = 10.4±0.2 R_☉. La mayor parte de los parámetros observados y calculados para V1135 Her, así como su ubicación en los diagramas color-magnitud y período-luminosidad indican que su clasificación debe ser Cefeida Anómala.

 

ABSTRACT

BVR light curves and radial velocities for the double-lined eclipsing binary V1135 Her were obtained. Our analyses of the multi-color light curves and radial velocities led to the determination of fundamental stellar properties of both components of the interesting system V1135 Her. The system consists of two evolved stars, G1+K3 between giants and supergiants, with masses of M₁ = 1.461 ±0.054 M_☉ and M₂ = 0.504 ± 0.040 M_☉ and radii of R₁ = 27.1 ± 0.4 R_☉ and R₂ = 10.4 ± 0.2 R_☉. Most of the observed and calculated parameters of the VI135 Her and its location on the color-magnitude and period-luminosity diagrams lead to a classification of an Anomalous Cepheid.

Key Words: binaries: close — binaries: eclipsing — binaries: general — binaries: spectroscopic — stars: individual (V1135Her).

 

DESCARGAR ARTÍCULO EN FORMATO PDF

 

REFERENCES

Baraffe, I., Chabrier, G., Allard, F., & Hauschildt, P. 1998, A & A, 337, 403.         [ Links ]

Bono, G., Caputo, F., Santolamazza, P., Cassisi, S., & Piersimoni, A. 1997, AJ, 113, 2209.         [ Links ]

Bono, G., Castellani, V., & Marconi, M. 2000, ApJ, 529, 293.         [ Links ]

Caputo, F., Cassisi, S., Castellani, M., Marconi, G., & Santolamazza, P. 1999, AJ, 117, 2199.         [ Links ]

Caputo, F., Castellani, V., Degl'Innocenti, S., Fiorentino, G., & Marconi, M. 2004, A & A, 424, 927.         [ Links ]

Cordier, D., Goupil, M. J., & Lebreton, Y. 2003, A & A, 409, 491.         [ Links ]

Cutri, R. M., et al. 2003, The 2MASS All-Sky Catalog of Point Sources (Pasadena: NASA/IPAC Infrared Science Archive), http://irsa.ipac.caltech.edu/applications/Gator.         [ Links ]

de Jager, C., & Nieuwenhuijzen, H. 1987, A & A, 177, 217.         [ Links ]

Dolphin, A. E., et al. 2003, AJ, 125, 1261.         [ Links ]

Drilling, J. S., & Landolt, A. U. 2000, in Allens Astrophysical Quantities, ed. A. N. Cox (4th ed.; New York: AIP Press-Springer), 381.         [ Links ]

Fiorentino, G., Limongi, M., Caputo, F., & Marconi, M. 2006, A & A, 460, 155.         [ Links ]

Fiorentino, G., & Monelli, M. 2012, A & A, 540, A102.         [ Links ]

Freedman, W. L., et al. 2001, ApJ, 553, 47.         [ Links ]

Gingold, R. A. 1985, Mem. Soc. Astron. Italiana, 56, 169.         [ Links ]

Goetz, W., & Wenzel, W. 1956, Ver'ff. Sternw. Sonneberg, 2, 279.         [ Links ]

Harris, H. C., Olszewski, E. W., & Wallerstein, G. 1984, AJ, 89, 119.         [ Links ]

Hernandez, J., Calvet, N., Briceno, C., Hartmann, L., & Berlind, P. 2004, AJ, 127, 1682.         [ Links ]

Hoffmeister, C. 1949, Erg. Astron. Nachr., 12, 1.         [ Links ]

İbanoğlu, C., Taş, G., Sipahi, E., & Evren, S. 2007, MNRAS, 376, 573.         [ Links ]

Kazarovets, E. V., Samus, N. N., Durlevich, O. V., Kireeva, N. N., & Pastukhova, E. N. 2008, Inf. Bull. Variable Stars, 5863, 1.         [ Links ]

Khruslov, A. V. 2008, Peremennye Zvezdy, 28, 4.         [ Links ]

Kinnunen, T., & Skiff, B. A. 2000, Inf. Bull. Variable Stars, 4905, 1.         [ Links ]

Landolt, A. U. 1983, AJ, 88, 439.         [ Links ]

----------, 1992, AJ, 104, 340.         [ Links ]

Lenz, P., & Breger, M. 2005, Commun. Asteroseismol., 146, 53.         [ Links ]

Lucy, L. B. 1967, Zert. Astrophys., 65, 89.         [ Links ]

Marconi, M., Fiorentino, G., & Caputo, F. 2004, A & A, 417, 1101.         [ Links ]

Mateo, M., Fischer, P., & Krzeminski, W. 1995, AJ, 110, 2166.         [ Links ]

Nemec, J. M., Nemec, A. F. L., & Lutz, T. E. 1994, AJ, 108, 222.         [ Links ]

Nidever, D. L., Marcy, G. W., Butler, R. P., Fischer, D. A., & Vogt, S. S. 2002, ApJS, 141, 503.         [ Links ]

Otero, S. A., & Wils, P. 2005, Inf. Bull. Variable Stars, 5644, 1.         [ Links ]

Pietrzyński, G., et al. 2011, ApJ, 742, L20.         [ Links ]

Pojmanski, G., Pilecki, B., & Szczygiel, D. 2005, Acta Astron., 55, 275.         [ Links ]

Prada Moroni, P. G., et al. 2012, ApJ, 749, 108.         [ Links ]

Prša, A., Guinan, E. F., Devinney, E. J., & Engle, S. G. 2008, A & A, 489, 1209.         [ Links ]

Prša, A., & Zwitter, T. 2005, ApJ, 628, 426.         [ Links ]

Sills, A., Karakas, A., & Lattanzio, J. 2009, ApJ, 692, 1411.         [ Links ]

Sipahi, E., İbanoğlu, C., Çakirli, Ö., & Evren, S. 2013, MNRAS, 429, 757.         [ Links ]

Soszyński, I., et al. 2008a, Acta Astron., 58, 293.         [ Links ]

Soszyński, I., et al. 2008b, Acta Astron., 58, 163.         [ Links ]

Soydugan, E., Soydugan, F., Demircan, O., & İbanoğlu, C. 2006, MNRAS, 370, 2013.         [ Links ]

Storm, J., Nardetto, N., Gieren, W., Fouqué, P., & Barnes, T. G. 2012, Ap & SS, 341, 115.         [ Links ]

Storm, J., et al. 2011a, A & A, 534, A94.         [ Links ]

Storm, J., et al. 2011b, A & A, 534, 95.         [ Links ]

Tonry, J., & Davis, M. 1979, AJ, 84, 1511.         [ Links ]

Udalski, A., et al. 2008, Acta Astron., 58, 89.         [ Links ]

van Hamme, W. 1993, AJ, 106, 2096.         [ Links ]

Wallerstein, G. 2002, PASP, 114, 689.         [ Links ]

Wallerstein, G., Kovtyukh, V. V., & Andrievsky, S. M. 2008, PASP, 120, 361.         [ Links ]

Wilson, R. E., & Devinney, E. J. 1971, ApJ, 166, 605 (W-D).         [ Links ]

Wozniak, P. R., et al. 2004, AJ, 127, 2436.         [ Links ]

Zacharias, N., Urban, S. E., Zacharias, M. I., Wycoff, G. L., Hall, D. M., Monet, D. G., & Rafferty, T. J. 2004, AJ, 127, 3043.         [ Links ]

 

Note

¹ Based on observations collected at TÜBİTAK National Observatory (Antalya, Turkey).