Publication:
XMM observation of the dynamically young galaxy cluster CL 0939+4713

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2003-06
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciencies
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
We present an XMM observation of the distant galaxy cluster CL 0939+4713. The X-ray image shows pronounced substructure, with two main subclusters which have even some internal structure. This is an indication that the cluster is a dynamically young system. This conclusion is supported by the temperature distribution: a hot region is found between the two main subclusters indicating that they are at the beginning of a major merger, and that they will probably collide in a few hundreds of Myr. The intra-cluster gas of CL 0939+4713 shows inhomogeneities in the metal distribution, with the optically richer subcluster having a higher metallicity.
Description
© ESO 2003. We are very grateful to Bernd Aschenbach for making the XMM data available to us. They are part of the TS/MPE guaranteed time. We thank L. M. Buson and M. Cappellari for kindly providing the HST image (grazie mille!). A. Castillo Morales acknowledges support by the Marie Curie Training Site grant HPMT-CT-2000-00136 by the European Commission. We also thank Dr. Phil A. James for carefully reading this paper. We also thank the referee Monique Arnaud: her suggestions and comments have greatly improved the reliability of the results obtained.
Unesco subjects
Keywords
Citation
Aguirre, A., Hernquist, L., Schaye, J., et al. 2001, ApJ, 561, 521 Andreon, S., Davoust, E., & Heim, T. 1997, A&A, 323, 337 Arnaud, M., Neumann, D. M., Aghanim, N., et al. 2001a, A&A, 365, L80 Arnaud, M., Aghanim, N., Gastaud, R., et al. 2001b, A&A, 365, L67 Arnaud, M., Majerowicz, S., Lumb, D., et al. 2002, A&A, 390, 27 Beisbart, C., Valdarnini, R., & Buchert, T. 2001, A&A, 379, 412 Belloni, P., Bruzual, A. G., Thimm, G. J., & Röser, H.-J. 1995, A&A, 297, 61 Belloni, P., & Röser, H.-J. 1996, A&AS, 118, 65 Buson, L. M., Bertola, F., Cappellari, M., et al. 2000, ApJ, 531, 684 Cowie, L. L., Barger, A. J., & Kneib, J.-P. 2002, AJ, 123, 2197 De Grandi, S., & Molendi, S. 2001, ApJ, 551, 153 De Young, D. S. 1978, ApJ, 223, 47 Dickey, J. M., & Lockman, F. J. 1990, ARA&A, 28, 215 Donnelly, R. H., Forman, W., Jones, C., et al. 2001, ApJ, 562, 254 Dressler, A., & Gunn, J. E. 1992, ApJS, 78, 1 Dressler, A., Oemler, A. J., Butcher, H. R., & Gunn, J. E. 1994, ApJ, 430, 107 Dressler, A., Oemler, A. J., Gunn, J. E., & Butcher, H. 1993, ApJL, 404, L45 Dressler, A., Smail, I., Poggianti, B. M., et al. 1999, ApJS, 122, 51 Evrard, A. E. 1991, MNRAS, 248, 8P Ferreras, I., & Silk, J. 2000, ApJ, 541, L37 Fujita, Y., Takizawa, M., Nagashima, M., & Enoki, M. 1999, PASJ, 51, L1 Fukugita, M., Doi, M., Dressler, A., & Gunn, J. E. 1995, ApJ, 439, 584 Gastaldello, F., & Molendi, S. 2002, ApJ, 572, 160 Geiger, B., & Schneider, P. 1999, MNRAS, 302, 118 Gnedin, N. Y. 1998, MNRAS, 294, 407 Gunn, J. E., & Gott, J. R. I. 1972, ApJ, 176, 1 Iye, M., Iwamuro, F., Maihara, T., et al. 2000, PASJ, 52, 9 Jenkins, A., Frenk, C. S., Pearce, F. R., et al. 1998, ApJ, 499, 20 Kaastra, J. S., Ferrigno, C., Tamura, T., et al. 2001, A&A, 365, L99 Kaastra, J. S., & Mewe, R. 1993, A&AS, 97, 443 Kodama, T., Smail, I., Nakata, F., Okamura, S., & Bower, R. G. 2001, ApJL, 562, L9 Lewis, A. D., Stocke, J. T., Page, M., & Buote, D. A. 2002, ApJ, 573, L13 Liedahl, D. A., Osterheld, A. L., & Goldstein, W. H. 1995, ApJ, 438, L115 Lumb, D. H., Warwick, R. S., Page, M., & De Luca, A. 2002, A&A, 389, 93 Majerowicz, S., Neumann, D. M., & Reiprich, T. H. 2002, A&A, 394, 77 Markevitch, M., Forman, W. R., Sarazin, C. L., & Vikhlinin, A. 1998, ApJ, 503, 77 Martin, C. L., Lotz, J., & Ferguson, H. C. 2000, ApJ, 543, 97 Metzler, C. A., & Evrard, A. E. 1994, ApJ, 437, 564 Metzler, C. A., & Evrard, A. E. 1997 [astro-ph/0204147] Molendi, S., & Gastaldello, F. 2001, A&A, 375, L14 Murakami, I., & Babul, A. 1999, MNRAS, 309, 161 Poggianti, B. M., Smail, I., Dressler, A., et al. 1999, ApJ, 518, 576 Pratt, G. W., Arnaud, M., & Aghanim, N. 2002, Conf. Proc., Galaxy Clusters and the High Redshift Universe Observed in X-rays, XXIth Moriond Astrophysics Meeting [astro-ph/0105431] Ricker, P. M., & Sarazin, C. L. 2001, ApJ, 561, 621 Ritchie, B. W., & Thomas, P. A. 2002, MNRAS, 329, 675 Schindler, S. 2002, Review for Astrophysics and Space Science Library: Mergering Processs in Galaxy Clusters, ed. L. Feretti, I. M. Gioia, & G. Giovannini (Dordrecht: Kluwer Academic Publishers), 229 Schindler, S., Belloni, P., Ikebe, Y., et al. 1998, A&A, 338, 843 Schindler, S., & Müller, E. 1993, A&A, 272, 137 Schindler, S., & Wambsganss, J. 1996, A&A, 313, 113 Seitz, C., Kneib, J.-P., Schneider, P., & Seitz, S. 1996, A&A, 314, 707 Smail, I., Morrison, G., Gray, M. E., et al. 1999, ApJ, 525, 609 Snowden, S. L., Egger, R., Freyberg, M. J., et al. 1997, ApJ, 485, 125 Stanford, S. A., Eisenhardt, P. R. M., & Dickinson, M. 1995, ApJ, 450, 512 Takizawa, M. 1999, ApJ, 520, 514 Takizawa, M. 2000, ApJ, 532, 183 Thomas, P. A., Colberg, J. M., Couchman, H. M. P., et al. 1998, MNRAS, 296, 1061 Ziegler, B. L., Saglia, R. P., Bender, R., et al. 1999, A&A, 346, 13
Collections