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Metallicity Gradients in the Halos of Elliptical Galaxies

  • Jenny E. Greene (a1), Chung-Pei Ma (a2), Andrew Goulding (a1), Nicholas J. McConnell (a3), John P. Blakeslee (a3), Timothy Davis (a4) and Jens Thomas (a5)...
Abstract

We discuss the stellar halos of massive elliptical galaxies, as revealed by our ambitious integral-field spectroscopic survey MASSIVE. We show that metallicity drops smoothly as a function of radius out to ~ 2.5 Re, while the [α/Fe] abundance ratios stay flat. The stars in the outskirts likely formed rapidly (to explain the high ratio of alpha to Fe) but in a relatively shallow potential (to explain the low metallicities). This is consistent with expectations for a two-phase growth of massive galaxies, in which the second phase involves accretion of small satellites. We also show some preliminary study of the gas content of these most MASSIVE galaxies.

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Copyright
COPYRIGHT: © International Astronomical Union 2016 
References
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Arnold, J. A., Romanowsky, A. J., Brodie, J. P., Forbes, D. A., Strader, J., Spitler, L. R., Foster, C., Blom, C., Kartha, S. S., Pastorello, N., Pota, V., Usher, C., & Woodley, K. A. 2014, ApJ, 791, 80
Cappellari, M., Emsellem, E., Krajnović, D., McDermid, R. M., Serra, P., Alatalo, K., Blitz, L., Bois, M., Bournaud, F., Bureau, M., Davies, R. L., Davis, T. A., de Zeeuw, P. T., Khochfar, S., Kuntschner, H., Lablanche, P.-Y., Morganti, R., Naab, T., Oosterloo, T., Sarzi, M., Scott, N., Weijmans, A.-M., & Young, L. M. 2011, MNRAS, 416, 1680
Carollo, C. M., & Danziger, I. J. 1994, MNRAS, 270, 743
Carollo, C. M., Danziger, I. J., & Buson, L. 1993, MNRAS, 265, 553
Crnojević, D., Ferguson, A. M. N., Irwin, M. J., Bernard, E. J., Arimoto, N., Jablonka, P., & Kobayashi, C. 2013, MNRAS, 432, 832
Crook, A. C., Huchra, J. P., Martimbeau, N., Masters, K. L., Jarrett, T., & Macri, L. M. 2007, ApJ, 655, 790
Davis, T. A., et al. 2011, MNRAS, 417, 882
D'Souza, R., Kauffman, G., Wang, J., & Vegetti, S. 2014, MNRAS, 443, 1433
Faber, S. M., & Jackson, R. E. 1976, ApJ, 204, 668
Graves, G. J., Faber, S. M., & Schiavon, R. P. 2009, ApJ, 693, 486
Greene, J. E., Janish, R., Ma, C.-P., McConnell, N. J., Blakeslee, J. P., Thomas, J., & Murphy, J. D. 2015, ApJ, 807, 11
Greene, J. E., Murphy, J. D., Graves, G. J., Gunn, J. E., Raskutti, S., Comerford, J. M., & Gebhardt, K. 2013, ApJ, 776, 64
Harris, G. L. H., Harris, W. E., & Poole, G. B. 1999, AJ, 117, 855
Harris, W. E., Harris, G. L. H., Layden, A. C., & Wehner, E. M. H. 2007, ApJ, 666, 903
Hill, G. J., et al. 2008, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, Vol. 7014, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Hirschmann, M., Naab, T., Ostriker, J. P., Forbes, D. A., Duc, P.-A., Davé, R., Oser, L., & Karabal, E. 2015, MNRAS, 449, 528
Kalirai, J. S., et al. 2006, ApJ, 648, 389
Kelson, D. D., Illingworth, G. D., Franx, M., & van Dokkum, P. G. 2006, ApJ, 653, 159
Kim, D.-W., & Fabbiano, G. 2015, ApJ, accepted (arXiv:1504.00899)
Knapp, G. R., Guhathakurta, P., Kim, D.-W., & Jura, M. A. 1989, ApJS, 70, 329
Kobayashi, C. 2004, MNRAS, 347, 740
Ma, C.-P., Greene, J. E., McConnell, N., Janish, R., Blakeslee, J. P., Thomas, J., & Murphy, J. D. 2014, ApJ, 795, 158
Mehlert, D., Thomas, D., Saglia, R. P., Bender, R., & Wegner, G. 2003, A&A, 407, 423
Murphy, J. D., Gebhardt, K., & Adams, J. J. 2011, ApJ, 729, 129
Naab, T., Oser, L., Emsellem, E., Cappellari, M., Krajnović, D., McDermid, R. M., Alatalo, K., Bayet, E., Blitz, L., Bois, M., Bournaud, F., Bureau, M., Crocker, A., Davies, R. L., Davis, T. A., de Zeeuw, P. T., Duc, P.-A., Hirschmann, M., Johansson, P. H., Khochfar, S., Kuntschner, H., Morganti, R., Oosterloo, T., Sarzi, M., Scott, N., Serra, P., Ven, G. v. d., Weijmans, A., & Young, L. M. 2014, MNRAS, 444, 3357
Negri, A., Ciotti, L., & Pellegrini, S. 2014, MNRAS, 439, 823
Pastorello, N., Forbes, D. A., Foster, C., Brodie, J. P., Usher, C., Romanowsky, A. J., Strader, J., & Arnold, J. A. 2014, MNRAS, 442, 1003
Peacock, M. B., Strader, J., Romanowsky, A. J., & Brodie, J. P. 2015, ApJ, 800, 13
Pu, S.-B., & Han, Z.-W. 2011, Research in Astronomy and Astrophysics, 11, 909
Pu, S. B., Saglia, R. P., Fabricius, M. H., Thomas, J., Bender, R., & Han, Z. 2010, A&A, 516, A4
Raskutti, S., Greene, J. E., & Murphy, J. D. 2014, ApJ, 786, 23
Rejkuba, M., Greggio, L., Harris, W. E., Harris, G. L. H., & Peng, E. W. 2005, ApJ, 631, 262
Röttgers, B., Naab, T., & Oser, L. 2014, MNRAS, 445, 1065
Sarzi, M., Alatalo, K., Blitz, L., Bois, M., Bournaud, F., Bureau, M., Cappellari, M., Crocker, A., Davies, R. L., Davis, T. A., de Zeeuw, P. T., Duc, P.-A., Emsellem, E., Khochfar, S., Krajnović, D., Kuntschner, H., Lablanche, P.-Y., McDermid, R. M., Morganti, R., Naab, T., Oosterloo, T., Scott, N., Serra, P., Young, L. M., & Weijmans, A.-M. 2013, MNRAS, 432, 1845
Sarzi, M., et al. 2010, MNRAS, 402, 2187
Spolaor, M., Kobayashi, C., Forbes, D. A., Couch, W. J., & Hau, G. K. T. 2010, MNRAS, 408, 272
Venn, K. A., Irwin, M., Shetrone, M. D., Tout, C. A., Hill, V., & Tolstoy, E. 2004, AJ, 128, 1177
Weijmans, A.-M., et al. 2009, MNRAS, 398, 561
White, S. D. M. 1980, MNRAS, 191, 1P
Williams, B. F., Dalcanton, J. J., Gilbert, E. F. B. M., Guhathakurta, P., Dorman, C., Lauer, T. R., Seth, A. C., Kalirai, J. S., Rosenfield, P., & Girardi, L. 2015, ApJ, accepted (arXiv:1501.06631)
Wu, X., Gerhard, O., Naab, T., Oser, L., Martinez-Valpuesta, I., Hilz, M., Churazov, E., & Lyskova, N. 2014, MNRAS, 438, 2701
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