Publication: Stellar populations of early-type galaxies in different environments - I. Line-strength indices. Relations of line-strengths with sigma
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2006-10
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This paper commences a series devoted to the study of the stellar content of early-type galaxies. The goal of the series is to set constraints on the evolutionary status of these objects. Methods. In this paper we describe the details of the galaxy sample, the observations, and the data reduction. Line-strength indices and velocity dispersions (sigma) are measured in 98 early-type galaxies drawn from different environments, and the relation of the indices with the velocity dispersion analysed in detail. Results. The present sample indicates that some of the index-sigma relations depend on galaxy environment. In particular, the slope of the relation between Balmer lines and s is steeper for galaxies in the Virgo cluster, small groups, and in the field than for galaxies in the Coma cluster. In several indices there is also a significant sigma. set in the zero point between the relations defined by the different subsamples. The slopes of the index-sigma relation for the Virgo and low-density environment galaxies are explained by a variation of both age and metallicity, with velocity dispersion, as previously noted in other studies. For the galaxies in the Coma cluster, however, the relation of the indices with s only requires a variation of the abundance along the s sequence. In agreement with other studies, we find that the models that better reproduce the slopes are those in which the a elements vary more than the Fe-peak elements along the s sequence, while, at a given s, older galaxies show an higher sigma/Fe ratio. Conclusions. The results can be explained assuming that galaxies in the Coma cluster have experienced a truncated star formation and chemical enrichment history compared to a more continuous time-extended history for their counterparts in lower density environments.
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© ESO 2006. We would like to thank Brad Gibson, Daisuke Kawata and Christopher Thom for their careful reading of the manuscript and for their useful comments. We are also grateful to Javier Cenarro, Reynier Peletier, and Alexandre Vazdekis for fruitful discussions. We are very grateful to the referee, Jim Rose, for his very constructive report and many useful suggestions. The WHT is operated on the island of La Palma by the Royal Greenwich Observatory at the Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. The Calar Alto Observatory is operated jointly by the Max-Planck Institute für Astronomie, Heidelberg, and the Spanish Instituto de Astrofísica de Andalucía (CSIC). This research has made use of the SIMBAD database operated at CDS, Strasbourg, France. This work was supported by the Spanish research project AYA 2003-01840, the European Community through its NOVA fellowship program, and the Australian Research Council. We are grateful to the CATs for generous allocation of telescope time.
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Arnaud, M., Rothenflug, R., Boulade, O., Vigroux, L., & Vangioni-Flam, E. 1992, A&A, 254, 49
Bender, R. 1990, A&A, 229, 441
Bender, R., Burstein, D., & Faber, S. M. 1993, ApJ, 411, 153
Bender, R., Saglia, R. P., Ziegler, B., et al. 1998, ApJ, 493, 529
Bernardi, M., Renzini, A., & da Costa, G., et al. 1998, ApJ, 508, L143
Bernardi, M., Sheth, R. K., & Annis, J., et al. 2003, AJ, 125, 1866
Bica, E., & Alloin, D. 1987, A&A, 181, 270
Binggeli, B., Sandage, A., & Tammann, G. A. 1985, AJ, 90, 1681
Binggeli, B., Popescu, C. C., & Tammann, G. A. 1993, A&AS, 98, 275
Bower, R. G., Ellis, R. S., Rose, J. A., & Sharples, R. M. 1990, AJ, 99, 530
Bruzual, G. A. 1983, ApJ, 273, 105
Burstein, D., Faber, S. M., Gaskell, C. M., & Krumm, N. 1984, ApJ, 287, 586
Caldwell, N. 1984, PASP, 96, 287
Caldwell, N., Rose, J. A., & Concannon, K. D. 2003, AJ, 125, 2891
Cardiel, N. 1999, Ph.D. Thesis, Universidad Complutense de Madrid
Cardiel, N., Gorgas, J., & Aragón Salamanca, A. 1995, MNRAS, 277, 502
Carigi, L. 2000, RMxAA, 36, 171
Cenarro, A. J., Gorgas, J., Cardiel, N., Vazdekis, A., & Peletier, R. F. 2002, MNRAS, 329, 863
Cenarro, A. J., Gorgas, J., Vazdekis, A., Cardiel, N., & Peletier, R. F. 2003, MNRAS, 339, L12
Cenarro, A. J., Sánchez Blázquez, P., Cardiel, N., & Gorgas, J. 2004, ApJ, 614, L101
Chiappini, C., Romano, D., & Matteucci, F. 2003a, MNRAS, 339, 63
Chiappini, C., Matteucci, F., & Meynet, G. 2003b, A&A, 410, 257
Chiosi, C., & Carraro, G. 2002, MNRAS, 335, 335
Colless, M., Burstein, D., & Davies, R. L., et al. 1999, MNRAS, 303, 813
Concannon, K. D., Rose, J. A., & Caldwell, N. 2000, ApJ, 536, L19
de Carvalho, R. R., & Djorgovski, S. 1992, ApJ, 389, 49
de Lucia, G., Springel, V., White, S. D. M., Croton, D., & Kauffmann, G. 2006, MNRAS, 366, 499
Denicoló, G., Terlevich, R., & Terlevich, E., et al. 2005a, MNRAS, 356, 1440 (D05a)
Denicoló, G., Terlevich, R., Terlevich, E., Forbes, D. A., & Terlevich, A. 2005b, MNRAS, 358, 813
de Vaucouleurs, G. 1961, ApJS, 6, 213
de Vaucouleurs, G., de Vaucouleurs, A., Corwin, H. G., & Buta, R. J. 1991, Third Reference Catalogue of Bright Galaxies (New York: Springer-Verlag)
de Zeeuw, P. T., Bureau, M., & Emsellem, E., et al. 2002, MNRAS, 329, 513
Diaferio, A., Kauffmann, G., & Balogh, M. L., et al. 2001, MNRAS, 323, 999
Djorgovski, S., & Davis, M. 1987, ApJ, 313, 59
Elbaz, D., Arnaud, M., & Vangioni-Flam, E. 1995, A&A, 303, 345
Ellis, R. 1998, Nature, 395, 3
Faber, S. M., Trager, S. C., González, J. J., & Worthey, G. 1995, in Stellar population, ed. P. C. van der Kruit, & G. Gilmore (Dordrecht: Kluwer Publisher), IAU Symp., 164, 249
Ferreras, I., Charlot, S., & Silk, J. 1999, ApJ, 521, 81
Fisher, D., Franx, M., & Illingworth, G. 1995, ApJ, 448, 119
Forbes, D. A., Ponman, T. J., & Brown, R. J. N. 1998, ApJ, 508, L43
Fulbright, J. P., Rich, R. M., & McWilliam, A. 2005, Nuclear Physics A, 758, 197
García, A. M. 1993, A&AS, 100, 470
Gavazzi, G., Boselli, A., Scodeggio, M., Pierini, D., & Belsole, E. 1999, MNRAS, 304, 595
Gebhardt, K., Faber, S. M., & Koo, D., et al. 2003, ApJ, 597, 239
Gibson, B. K. 1997, MNRAS, 290, 471
Godwin, J. G., Metcalfe, N., & Peach, J. V. 1983, MNRAS, 202, 113
González, J. J. 1993, Ph.D. Thesis, University of California, Santa Cruz (G93)
González, J. J., & Gorgas, J. 1996, in Fresh views of elliptical galaxies, ed. A. Buzzoni, & A. Renzini, ASP Conf. Ser., 86, 225 (GG96)
Gorgas, J., Efstathiou, G., & Aragón Salamanca, A. 1990, MNRAS, 245, 217
Gorgas, J., Faber, S. M., & Burstein, D., et al. 1993, ApJS, 86, 153
Gorgas, J., Cardiel, N., Pedraz, S., & González, J. J. 1999, A&AS, 139, 29
Goudfrooij, P., Hansen, L., Jørgensen, H. E., & Norgaard-Nielsen, H. U. 1994, A&AS, 105, 341
Greggio, L. 1997, MNRAS, 285, 151
Greggio, L., & Renzini, A. 1983, A&A, 118, 217
Guzmán, R., Lucey, J. R., Carter, D., & Terlevich, R. J. 1992, MNRAS, 257, 187
Henry, R. B. C., Edmunds, M. G., & Köppen, J. 2000, ApJ, 541, 660
Jørgensen, I. 1997, MNRAS, 288, 161
Jørgensen, I. 1999, MNRAS, 306, 607
Jørgensen, I., Franx, M., & Kjærgaard, P. 1996, MNRAS, 280, 167
Kauffmann, G. 1996, MNRAS, 281, 487
Kauffmann, G., & Charlot, S. 1998, MNRAS, 297, L23
King, D. L. 1985, in RGO–La Palma Technical Notes, No. 31
Kobayashi, C., & Arimoto, N. 1999, ApJ, 527, 573
Kuntschner, H. 1998, Ph.D. Thesis, University of Durham
Kuntschner, H. 2000, MNRAS, 315, 184
Kuntschner, H., & Davies, R. L. 1998, MNRAS, 295, L29
Kuntschner, H., Lucey, J. R., Smith, R. J., Hudson, M. J., & Davies, R. L. 2001, MNRAS, 323, 615 (K01)
Kuntschner, H., Smith, R. J., & Colless, M., et al. 2002, MNRAS, 337, 172
Laird, J. B., & Levison, H. F. 1985, AJ, 90, 2652
Larson, R. B., Tinsley, B. M., & Caldwell, C. N. 1980, ApJ, 237, 692
Maeder, A. 1992, A&A, 264, 105
Marigo, P. 2001, A&A, 370, 194
Matteucci, F. 2003, Ap&SS, 284, 539
Matteucci, F., & Greggio, L. 1986, A&A, 154, 279
McWilliam, A., & Rich, R. M. 1994, 91, 749
McWilliam, A., & Rich, R. M. 2004, in Origin and Evolution of the Elements, from the Carnegie Observatories Centennial Symposia, ed. A. McWilliam, & M. Rauch, Pasadena, Carnegie Observatories
Mehlert, D., Saglia, R. P., Bender, R., & Wegner, G. 2000, A&AS, 141, 449 (M00)
Mehlert, D., Thomas, D., Saglia, R. P., Bender, R., & Wegner, G. 2003, A&A, 407, 423
Meynet, G., & Maeder, A. 2002, A&A, 390, 561
Mobasher, B., & James, P. A. 1996, MNRAS, 316, 507
Moore, S. A. W., Lucey, J. R, Kuntschner, H., & Colless, M. 2002, MNRAS, 336, 382 (M02)
Nomoto, K., Thielemann, F. K., & Wheeler, J. C. 1984, ApJ, 279, 23
Norris, J. 1981, ApJ, 248, 177
Oke, J. B. 1990, AJ, 99, 1621
Pedraz, S., Gorgas, J., Cardiel, N., & Guzmán, R. 1998, Ap&SS, 263, 159
Pedraz, S., Gorgas, J., Cardiel, N., Sánchez Blázquez, P., & Guzmán, R. 2002, MNRAS, 332, L59
Phillips, M. M., Jenkins, C. R., Dopita, M. A., Sadler, E.M., & Binette, L. 1986, AJ, 91, 1062
Pickles, A. J. 1985, ApJ, 296, 340
Poggianti, B. M., Bridges, T. J., et al. 2001a, ApJ, 562, 689
Poggianti, B. M., Bridges, T. J., & Carter, D., et al. 2001b, ApJ, 563, 118
Prantzos, N., Vangioni-Flam, E., & Chauveau, S. 1994, A&A, 285, 132
Proctor, R. N., & Sansom, A. E. 2002, MNRAS, 333, 517
Proctor, R. N., Forbes, D. A., & Hau, G. K. T. 2004, MNRAS, 349, 1381
Prugniel, Ph., Golev, V., & Maubon, G. 1999, A&A, 346, L25
Renzini, A., & Voli, M. 1981, A&A, 94, 175
Rose, J. A. 1985, AJ, 90, 1927
Rose, J. A., Bower, R. G., Caldwell, N., et al. 1994, AJ, 108, 2054
Rusin, D., Kochanek, C. S., & Falco, E. E. 2003, ApJ, 587, 143
Sánchez Blázquez, P. 2004, Ph.D. Thesis, Universidad Complutense de Madrid
Sánchez Blázquez, P., Gorgas, J., Cardiel, N., Cenarro, A. J., & González, J. J. 2003, ApJ, 590, L91
Sánchez Blázquez, P., Peletier, R. F., Jiménez Vicente, J., et al. 2006, MNRAS [arXiv:astro-ph/0607009]
Sargent, W. L.W., Schechter, P. L., Boksenberg, A., & Shortridge, K. 1977, ApJ, 212, 326
Savage, B. D., & Mathis, J. S. 1979, ARA&A, 17, 73
Schiavon, R. P., Caldwell, N., & Rose, J. A. 2004, AJ, 127, 1513
Schmidt, M. 1963, ApJ, 137, 758
Schweizer, F., Seitzer, P., & Faber, S. M., et al. 1990, ApJ, 364, L33
Somerville, R. S., & Primack, J. R. 1999, MNRAS, 310, 1087
Smail, I., Kuntschner, H., & Kodama, T. 2001, MNRAS, 323, 839
Sweigart, A. V. 1997, ApJ, 474, L23
Terlevich, R., Davies, R. L., Faber, S. M., & Burstein, D. 1981, MNRAS, 196, 381
Terlevich, A. I., Kuntschner, H., Bower, R. G., Caldwell, N., & Sharples, R. M. 1999, MNRAS, 310, 445
Thielemann, F. K., Nomoto, K., & Hashimoto, M. A. 1996, ApJ, 460, 408
Thomas, D., Greggio, L., & Bender, R. 1998 MNRAS, 296, 119
Thomas, D., Maraston, C., & Bender, R. 2002, Ap&SS, 281, 371
Thomas, D., Maraston, C., & Bender, R. 2003, MNRAS, 343, 279 (TMB03)
Thomas, D., Maraston, C., Bender, R., & de Oliveira, C. M. 2005, ApJ, 621, 673
Trager, S. C. 1997, Ph.D. Thesis, University of California, Santa Cruz
Trager, S. C., Worthey, G., Faber, S. M., Burstein, D., & González, J. J. 1998, ApJS, 116, 1 (T98)
Trager, S. C., Faber, S. M., Worthey, G., & González, J. J. 2000a, AJ, 119, 1645 (T00a)
Trager, S. C., Faber, S. M., Worthey, G., & González, J. J. 2000b, AJ, 120, 165
Trager, S. C., Faber, S. M., & Dressler, A. 2001, in Astrophysical Ages and Times Scales, ASP Conf. Ser., 245, 429
Treu, T., Stiavalli, M., Casertano, S., Møller, P., & Bertin, G. 1999, MNRAS, 308, 1037
Treu, T., Stiavelli, M., Bertin, G., Casertano, S., & Møller, P. 2001, MNRAS, 326, 237
Treu, T., Stiavelli, M., Casertano, S., Møller, P., & Bertin, G. 2002, ApJ, 564, L13
Treu, T., Ellis, R. S., Liao, T. X., et al. 2005, ApJ, 633, 174
Tripicco, M. J., & Bell, R. A. 1995, AJ, 110, 3035 (TB95)
Toomre, A. 1977, in Evolution of galaxies and stellar population, ed. B. M. Tinsley, & R. Larson, New Haven, Yale University Observatory, 401
van Dokkum, P. G., & Ellis, R. S. 2003, ApJ, 592, L53
van Dokkum, P. G., Franx, M., Kelson, D., Illingworth, G., & Fabricant, D. 2001, in Proceedings of the ESO/ECF/STScI Workshop, ed. A. Renzini, & R. E. Williams, Srpinger, 194
Vazdekis, A. 1999, ApJ, 513, 224
Vazdekis, A., Cenarro, A. J., Gorgas, J., Cardiel, N., & Peletier, R. F. 2003, MNRAS, 340, 1317
Visvanathan, N., & Sandage, A. 1977, ApJ, 216, 214
Worthey, G. 1994, ApJ, 95, 107
Worthey, G. 1998, PASP, 110, 888
Worthey, G. 2004, AJ, 128, 2826
Worthey, G., & Ottaviani, D. L. 1997, ApJS, 111, 377
Worthey, G., & Collobert, M. 2003, ApJ, 586, 17
Worthey, G., Faber, S. M., & González, J. J. 1992, ApJ, 398, 69
Worthey, G., Faber, S. M., González, J. J., & Burstein, D. 1994, ApJS, 94, 687
Worthey, G., Trager, S. C., & Faber, S. M. 1995, in Fresh views of elliptical galaxies, ASP Conf. Ser., 86, 203
Woosley, S. E., & Weaver, T. A. 1995, ApJS, 101, 181
Yi, S. K., Yoon, S.-J., & Kaviraj, S., et al. 2005, ApJ, 619, L111
Zwicky, F., Herzog, E., Wild, P., Karpowicz, M., & Kowal, C. T. 1961, AJ, 79, 1356