A. Franco-Balderas, H. M. Hernández-Toledo, D. Dultzin-Hacyan, and M. Rosado
Instituto de Astronomía, UNAM, Apdo. Postal 70-264, 04510 México D. F., México (alfred@astroscu.unam.mx; hector@astroscu.unam.mx; deborah@astroscu.unam.mx; margarit@astroscu.unam.mx)
Received 2005 February 9
Accepted 2005 June 30
]]> RESUMEN
Este es el tercero de una serie de artículos dedicados al estudio de las propiedades fotométricas de galaxias elípticas y espirales en pares interactuantes. Presentamos las magnitudes totales (BV RI), así como también los correspondientes perfiles geométricos (ε = 1 — b/α, PA y α4 /α), de color y de brillo superficial para un conjunto de 10 pares de morfología mixta (E/S0+S) pertenecientes al Catálogo de Pares de Galaxias Aisladas de Karachentsev (KPG). Para la mayor parte de los objetos aquí presentados, hemos determinado por primera vez los parámetros fotométricos. La información obtenida de la fotometría superficial, en combinación con imágenes procesadas y diagramas de color, ha resultado muy útil para probar y reevaluar la clasificación morfológica de las galaxias en cada par. En la presente muestra encontramos 5 pares (E+S) verdaderos, 4 sistemas lenticular-espiral (S0+S) y un par espiral-espiral (S+S). No encontramos evidencia clara en favor del efecto Holmberg en nuestro conjunto de pares mixtos. La existencia de un gran número de pares (E+S) aislados (~ 50% en nuestra muestra), introduce interesantes preguntas para los modelos de formación de galaxias.
ABSTRACT
This is the third of a series of papers devoted to the study of the photometric properties of spiral and elliptical galaxies in interacting pairs. We report broad band (BV RI) total magnitudes, as well as surface brightness, color and geometric (ε = 1 — b/α, PA and α4/α) profiles for a sample of 10 mixed morphology (E/S0+S) pairs drawn from the Karachentsev Catalogue of Isolate Pairs of Galaxies (KPG). Most of the objects reported here have their photometric parameters derived for the first time. Surface photometry in combination with image processing and color diagrams are useful to test and reevaluate the morphological classification of each galaxy in these pairs. We find 5 true (E+S) pairs in the present sample, 4 lenticular-spiral (S0+S) systems and 1 spiral-spiral (S+S) pair. We found no clear evidence of a Holmberg effect in our sample of mixed pairs. The existence of a large number of isolated (E+S) pairs (~ 50% in our sample) rises interesting questions for models of galaxy formation.
Key Words: Galaxies: Elliptical — Galaxies: Fundamental parameters — Galaxies: Interactions — Galaxies: Phometry — Galaxies: Spiral — Galaxies: Structure.
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ACKNOWLEDGMENTS
]]> A. F-B. acknowledges CONACyT for a scholarship. A. F-B., D. D-H., and M. R. acknowledges support through grants IN118601, IN100703, and IN120802, from DGAPA, PAPIIT, UNAM, and 2002-C01-40095 from CONACyT. Partial support for this work was provided by CONACyT grant 42810/A-1 to H. M. H-T. We have made use of NED and LEDA databases throughout this paper.
REFERENCES
Arp, H. 1976, ApJ, 210, L59 [ Links ]
Athanassoula, E., Makino, J., & Bosma, A. 1997, MNRAS, 286, 825 [ Links ]
Barnes, J. E., & Hernqist, L. 1992, ARA&A, 30, 705 [ Links ]
Barth, A. J., Reichert, G. A., Ho, L. C., Shields, J. C., Filippenko, A. V., & Puchnarewicz, E. M. 1997, AJ, 114, 2313 [ Links ]
Bournaud, F., Duc, P.-A., Amram, P., Combes, F., & Gach, J.-L. 2004, A&A, 425, 813 [ Links ]
Christlein, D., & Zabludoff, A. I. 2005, ApJ, 621, 201 [ Links ]
Condon, J. J., & Broderick, J. J. 1988, AJ, 96, 30 [ Links ]
de Vaucouleurs, G., de Vaucouleurs, A., Corwin, H. G., & Buta, R. 1991, Third Reference Catalogue of Bright Galaxies (RC3), (New York: Springer-Verlag) [ Links ]
de Vaucouleurs, G. 1958, Ann. Astrophys., 11, 247 [ Links ]
Domingue, D. L., Sulentic, J. W., Xu, C., Mazzarella, J., Gao, Y., & Rampazzo, R. 2003, AJ, 125, 555 [ Links ]
Dultzin-Hacyan, D., Krongold, Y., Fuentes-Guridi, I., & Marzianni, P. 1999, ApJ, 513, L111 [ Links ]
Elmegreen, B. G., & Elmegreen, D. M. 1982, MNRAS, 201, 1021 [ Links ]
Franco-Balderas, A., Hernández-Toledo, H. M., Dultzin-Hacyan, D., & García-Ruiz, G. 2003, A&A, 406, 415 [ Links ]
Franco-Balderas, A., Hernaández-Toledo, H. M., & Dultzin-Hacyan, D. 2004, A&A, 417, 411 [ Links ]
Frei, Z., & Gunn, J. E. 1994, AJ, 108, 1476 [ Links ]
Henriksen, M., & Cousineau, S. 1999, ApJ, 511, 595 [ Links ]
Holmberg, E. 1958, Lund Medd. Astron. Obs. Ser. II, 136, 1 [ Links ]
Karachentsev, I. D. 1972, Catalogue of Isolated Pairs of Galaxies in the Northern Hemisphere, Comm. Spec. Ap. Obs., 7, 1 [ Links ]
Kennicutt, R. C., Roettiger, K. A., Keel, W. C., van der Hulst, J. M., & Hummel, E. 1987, AJ, 93, 1011 [ Links ]
Landolt, A. U. 1992, AJ, 104, 340 [ Links ]
Lupton, R., Blanton, M. R., Fekete, G., Hogg, D. W., O'Mullane, W., Szalay, A., & Wherry, N. 2004, PASP, 116, 133 [ Links ]
Mihos, J. Ch. 1995, ApJ, 438, 75 [ Links ]
Naab, T., & Burkert, A. 2003, ApJ 597, 893 [ Links ]
Prugniel, P., & Heraudeau, P. 1998, A&AS, 128, 299 [ Links ]
Ramella, M., Geller, M. J., Pisani, A., & Da Costa, L. N. 2002, AJ, 123, 2976 [ Links ]
Rampazzo, R., Reduzzi, L., Sulentic, J. W., & Madejsky, R. 1995, A&AS, 110, 131 [ Links ]
Rampazzo, R., & Sulentic, J. W. 1992, A&A, 259, 43 [ Links ]
Reduzzi, L., & Rampazzo, R. 1996, A&AS, 116, 515 [ Links ]
Roberts, M. S., & Haynes, M. P. 1994, ARA&A, 32, 115 [ Links ]
Sérsic, J. L. 1968, Atlas de galaxias australes Cordoba: Observatorio Astronomico [ Links ]
Schlegel, D. J., Finkbeiner, D. P., Douglas, P., & Davis, M. 1998, ApJ, 500, 525 [ Links ]
Schweizer, F., & Seitzer, P. 1992, AJ, 104, 1039 [ Links ]
Teerikorpi, P. 2001, A&A, 371, 470 [ Links ]
Trujillo, I., Erwin, P., Ramos, A., & Graham, A. 2004, AJ, 127, 1917 [ Links ]
Tully, R. B., Pierce, M. J., Huang, Jia-Sheng, Saunders, W., Verheijen, M. A. W., & Witchalls, P. L. 1998, AJ, 115, 2264 [ Links ]
Verheijen, M. A. W. 2001, ApJ, 563, 694 [ Links ]
Wiren, S., Zheng, J.-Q., Valtonen, M. J. & Chermin, A. 1996, AJ, 111, 160 [ Links ] ]]>