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HISTORY OF STAR FORMATION OF EARLY TYPE GALAXIES FROM INTEGRATED LIGHT: STELLAR AGES AND ABUNDANCES

  • Schiavon, Ricardo P. (Gemini Observatory)
  • Received : 2010.07.21
  • Accepted : 2010.08.03
  • Published : 2010.09.30

Abstract

I briefly review what has been learned from determinations of mean stellar ages and abundances from integrated light studies of early-type galaxies, and discuss some new questions posed by recent data. A short discussion of spectroscopic ages is presented, but the main focus of this review is on the abundances of Fe, Mg, Ca, N, and C, obtained from comparisons of measurements taken in integrated spectra of galaxies with predictions from stellar population synthesis models.

Keywords

References

  1. Arrigoni, M., Trager, S. C., Somerville, R. S., & Gibson, B. K., 2010, Galactic Chemical Evolution in Hierarchical Formation Models - I. Early-Type Galaxies in the Local Universe, MNRAS, 402, 173 https://doi.org/10.1111/j.1365-2966.2009.15924.x
  2. Caldwell, N., Rose, J. A., & Concannon, K. D., 2003, Star Formation Histories of Early-Type Galaxies. I. Higher Order Balmer Lines as Age Indicators, AJ, 125, 2891 https://doi.org/10.1086/375308
  3. Cannon, R. D., et al., 1998, Carbon and Nitrogen Abundance Variations on the Main Sequence of 47 Tucanae, MNRAS, 298, 601 https://doi.org/10.1046/j.1365-8711.1998.01671.x
  4. Carretta, E., et al., 2005, Abundances of C, N, O in Slightly Evolved Stars in the Globular Clusters NGC 6397, NGC 6752 and 47 Tuc, A&A, 433, 597 https://doi.org/10.1051/0004-6361:20041892
  5. Cenarro, A. J., Cardiel, N., Gorgas, J., Peletier, R. F., Vazdekis, A., & Prada, F., 2001b, Empirical Calibration of the Near-Infrared Ca II Triplet - I. The Stellar Library and Index Definition, MNRAS, 326, 959 https://doi.org/10.1046/j.1365-8711.2001.04688.x
  6. Cenarro, A. J., Gorgas, J., Cardiel, N., Pedraz, S., Peletier, R. F., & Vazdekis, A., 2001a, Empirical Calibration of the Near-Infrared Ca II Triplet - II. The Stellar Atmospheric Parameters, MNRAS, 326, 981 https://doi.org/10.1046/j.1365-8711.2001.04689.x
  7. Cenarro, A. J., S´anchez-Bl´azquez, P., Cardiel, N., & Gorgas, J., 2004, Early-Type Galaxies in the Coma Cluster: A New Piece in the Calcium Puzzle, ApJ, 614, L101 https://doi.org/10.1086/425862
  8. Chiappini, C., Romano, D., & Matteucci, F., 2003, Oxygen, Carbon and Nitrogen Evolution in Galaxies, MNRAS, 339, 63 https://doi.org/10.1046/j.1365-8711.2003.06154.x
  9. Coelho, P., Bruzual, G., Charlot, S., Weiss, A., Barbuy, B., & Ferguson, J. W., 2007, Spectral Models for Solar - Scaled and ${\alpha}$ - Enhanced Stellar Populations, MNRAS, 382, 498 https://doi.org/10.1111/j.1365-2966.2007.12364.x
  10. Conroy, C. & Spergel, D. N., 2010, On the Formation of Multiple Stellar Populations in Globular Clusters, ApJ, submitted, arXiv:1005.4934
  11. Denicolo, G., Terlevich, R., Terlevich, E., Forbes, D. A., & Terlevich, A., 2005, Group, Field and Isolated Early-Type Galaxies - II. Global Trends from Nuclear Data, MNRAS, 358, 813 https://doi.org/10.1111/j.1365-2966.2005.08748.x
  12. Eggen, O. J., Lynden-Bell, D., & Sandage, A. R., 1962, Evidence from the Motions of Old Stars that the Galaxy Collapsed, ApJ, 136, 748 https://doi.org/10.1086/147433
  13. Erdelyi-Mendes, M. & Barbuy, B., 1991, Synthetic Ca II Infrared Triplet Lines as a Function of Stellar Parameters, A&A, 241, 176
  14. Faber, S. M., Worthey, G., & Gonzalez, J. J., 1992, Absorption-Line Spectra of Elliptical Galaxies and Their Relation to Elliptical Formation, Proc. IAU Symp. 149, (Dordrecht:Kluwer) p. 255
  15. Freitas Pacheco, J. A. & Barbuy, B., 1995, Horizontal Branch Morphology and $H_{\beta}$ Indices of Globular Clusters, A&A, 302, 718
  16. Graves, G. J., Faber, S. M., Schiavon, R. P., & Yan, R., 2007, Ages and Abundances of Red Sequence Galaxies as a Function of LINER Emission-Line Strength, ApJ, 671, 243 https://doi.org/10.1086/522325
  17. Graves, G. J. & Schiavon, R. P., 2008, Measuring Ages and Elemental Abundances from Unresolved Stellar Populations: Fe, Mg, C, N, and Ca, ApJS, 177, 446 https://doi.org/10.1086/588097
  18. Gunn, J. E., Stryker, L. L., & Tinsley, B. M., 1981, Evolutionary Synthesis of the Stellar Population in Elliptical Galaxies. III - Detailed Optical Spectra, ApJ, 249, 48 https://doi.org/10.1086/159259
  19. Jorgensen, I., et al., 2005, RX J0152.7-1357: Stellar Populations in an X-Ray Luminous Galaxy Cluster at z = 0.83, AJ, 129, 1249 https://doi.org/10.1086/427857
  20. Jorgensen, U. G., Carlsson, M., & Johnson, H. R., 1992, The Calcium Infrared Triplet Lines in Stellar Spectra, A&A, 254, 258
  21. Kaviraj, S., et al., 2007, UV-Optical Colors as Probes of Early-Type Galaxy Evolution, ApJS, 173, 619 https://doi.org/10.1086/516633
  22. Kelson, D., Illingworth, G. D., Franx, M., & van Dokkum, P. G., 2006, Line Strengths in Early-Type Cluster Galaxies at z = 0.33: Implications for ${\alpha}$/Fe, Nitrogen, and the Histories of E/S0s, ApJ, 653, 159 https://doi.org/10.1086/507832
  23. Kuntschner, H., 2000, The Stellar Populations of Early-Type Galaxies in the Fornax Cluster, MNRAS, 315, 184 https://doi.org/10.1046/j.1365-8711.2000.03377.x
  24. Kuntschner, H., et al., 2010, The SAURON Project - XVII. Stellar Population Analysis of the Absorption Line Strength Maps of 48 Early-Type Galaxies, MNRAS, in press, arXiv:1006.1574
  25. Larson, R. B., 1974, Dynamical Models for the Formation and Evolution of Spherical Galaxies, MNRAS, 166, 585 https://doi.org/10.1093/mnras/166.3.585
  26. Lee, H. -C., Yoon, S. -J., & Lee, Y. -W., 2000, The $H{\beta}$Index as an Age Indicator of Old Stellar Systems: The Effects of Horizontal-Branch Stars, AJ, 120, 998 https://doi.org/10.1086/301471
  27. Lee, H. -C., et al., 2009, Stellar Population Models and Individual Element Abundances. II. Stellar Spectra and Integrated Light Models, ApJ, 694, 902 https://doi.org/10.1088/0004-637X/694/2/902
  28. Leonardi, A. J. & Rose, J. A., 1996, The Ages of Starbursts in Post-Starburst Galaxies, AJ, 111, 182 https://doi.org/10.1086/117772
  29. Maraston, C. & Thomas, D., 2000, Strong Balmer Lines in Old Stellar Populations: No Need for Young Ages in Ellipticals?, ApJ, 541, 126 https://doi.org/10.1086/309433
  30. Martell, S. L. & Smith, G. H., 2009, CN Variations in High-Metallicity Globular and Open Clusters, PASP, 121, 577 https://doi.org/10.1086/599979
  31. Martell, S. L. & Grebel, E. K., 2010, Light-Element Abundance Variations in the Milky Way Halo, A&A, in press, arXiv:1005.4070
  32. Milone, A., Barbuy, B., & Schiavon, R. P., 2000, The Ratio of ${\alpha}-Elements$ to Iron in Early-Type Galaxies from TiO and $Mg_2$, AJ, 120, 131 https://doi.org/10.1086/301434
  33. O’Connell, R. W., 1980, Galaxy Spectral Synthesis. II - M32 and the Ages of Galaxies, ApJ, 236, 430 https://doi.org/10.1086/157759
  34. Peterson, R. C., 1976, Overabundances of Sodium and the Heavy Isotopes of Magnesium in Strong-Lined Elliptical Galaxies, ApJ, 210, L123 https://doi.org/10.1086/182319
  35. Peterson, R. C., 2007, Constraining Star Formation in Old Stellar Populations from Theoretical Spectra, ASP Conference Series, 374, 369
  36. Piotto, G., 2009, Observations of Multiple Populations in Star Clusters, Proc. IAU Symp., 258, 233
  37. Pipino, A., Chiappini, C., Graves, G., & Matteucci, F., 2009a, Stellar Mass Loss, Rotation and the Chemical Enrichment of Early-Type Galaxies, MNRAS, 396, 1151 https://doi.org/10.1111/j.1365-2966.2009.14833.x
  38. Pipino, A., Devriendt, J. E. G., Thomas, D., Silk, J., & Kaviraj, S., 2009b, GALICS. II: the [${\alpha}$/Fe]-Mass Relation in Elliptical Galaxies, A&A, 505, 1075 https://doi.org/10.1051/0004-6361/200811269
  39. Prochaska, L. C., Rose, J. A., & Schiavon, R. P., 2005, A New Definition for the Ca4227 Feature: Is Calcium Really Underabundant in Early-Type Galaxies?, AJ, 130, 2666 https://doi.org/10.1086/497642
  40. Renzini, A. & Buzzoni, A. 1986, in Spectral Evolution of Galaxies, C. Chiosi & A. Renzini, Eds. (Dordrecht:Reidel), 151
  41. Renzini, A. & Buzzoni, A. 1986, Global Properties of Stellar Populations and the Spectral Evolution of Galaxies, Ibid., ASSL, 122, 195
  42. Rose, J. A., 1985, Constraints on Stellar Populations in Elliptical Galaxies, AJ, 90, 1927 https://doi.org/10.1086/113898
  43. Rose, J. A., 1994, The Integrated Spectra of M32 and of 47 Tuc: A Comparative Study at High Spectral Resolution, AJ, 107, 206 https://doi.org/10.1086/116845
  44. Saglia, R. P., Maraston, C., Thomas, D., Bender, R., & Colless, M., 2002, The Puzzlingly Small Ca II Triplet Absorption in Elliptical Galaxies, ApJ, 579, L13 https://doi.org/10.1086/344742
  45. Sanchez-Blazquez, P., Gibson, B. K., Kawata, D., Cardiel, N., & Balcells, M., 2009, Are Dry Mergers Dry, Moist or Wet?, MNRAS, 400, 1264 https://doi.org/10.1111/j.1365-2966.2009.15557.x
  46. Schawinski, K., et al., 2007, Observational Evidence for AGN Feedback in Early-Type Galaxies, MNRAS, 382, 1415 https://doi.org/10.1111/j.1365-2966.2007.12487.x
  47. Schiavon, R. P., 2007, Population Synthesis in the Blue. IV. Accurate Model Predictions for Lick Indices and UBV Colors in Single Stellar Populations, ApJS, 171, 146 https://doi.org/10.1086/511753
  48. Schiavon, R. P. & Barbuy, B., 1999, The Temperature Scale of Metal-Rich M Giants Based on TiO Bands: Population Synthesis in the Near-Infrared, ApJ, 510, 934 https://doi.org/10.1086/306603
  49. Schiavon, R. P., Barbuy, B., & Bruzual, A. G., 2000, Near-Infrared Spectral Features in Single-Aged Stellar Populations, ApJ, 532, 453 https://doi.org/10.1086/308533
  50. Schiavon, R. P., Caldwell, N., & Rose, J. A., 2004, The Integrated Spectrum of M67 and the Spectroscopic Age of M32, AJ, 127, 1513 https://doi.org/10.1086/381950
  51. Schiavon, R. P., et al., 2006, The DEEP2 Galaxy Redshift Survey: Mean Ages and Metallicities of Red Field Galaxies at z - 0.9 from Stacked Keck DEIMOS Spectra, ApJ, 651, L93 https://doi.org/10.1086/509074
  52. Searle, L. & Zinn, R., 1978, Compositions of Halo Clusters and the Formation of the Galactic Halo, ApJ, 225, 357 https://doi.org/10.1086/156499
  53. Serra, P., Trager, S. C., Oosterloo, T. A., & Morganti, R., 2008, Stellar Populations, Neutral Hydrogen, and Ionised Gas in Field Early-Type Galaxies, A&A, 483, 57 https://doi.org/10.1051/0004-6361:20078954
  54. Smith, G. H. & Norris, J., 1982, The Cyanogen Distributions in NGC 3201, M55, and M71, ApJ, 254, 149 https://doi.org/10.1086/159718
  55. Smith, R. J., Lucey, J. R., Hudson, M. J., & Bridges, T. J., 2009, Abundance Ratios in Red-Sequence Galaxies over a Wide Mass Range: the 'X-Planes' for Magnesium, Calcium, Carbon and Nitrogen, MNRAS, 398, 119 https://doi.org/10.1111/j.1365-2966.2009.15146.x
  56. Spinrad, H. & Taylor, B. J., 1971, The Stellar Content of the Nuclei of Nearby Galaxies. I. M31, M32, and M81, ApJS, 22, 445 https://doi.org/10.1086/190232
  57. Spinrad, H., et al., 1997, LBDS 53W091: an Old, Red Galaxy at z = 1.552, ApJ, 484, 581 https://doi.org/10.1086/304381
  58. Thomas, D., Maraston, C., & Bender, R., 2003, New Clues on the Calcium Underabundance in Early-Type Galaxies, MNRAS, 343, 279 https://doi.org/10.1046/j.1365-8711.2003.06659.x
  59. Thomas, D., Maraston, C., Bender, R., & Mendes de Oliveira, C., 2005, The Epochs of Early-Type Galaxy Formation as a Function of Environment, ApJ, 621, 673 https://doi.org/10.1086/426932
  60. Toloba, E., Sanchez-Blazquez, P., Gorgas, J., & Gibson, B. K., 2009, Carbon and Nitrogen Abundances in Early-Type Galaxies, ApJ, 691, 95 https://doi.org/10.1088/0004-637X/691/2/L95
  61. Trager, S. C., Worthey, G., Faber, S. M., Burstein, D., & Gonzalez, J. J., 1998, Old Stellar Populations. VI. Absorption-Line Spectra of Galaxy Nuclei and Globular Clusters, ApJS, 116, 1 https://doi.org/10.1086/313099
  62. Trager, S. C., Faber, S. M., Worthey, G., & Gonzalez, J. J., 2000, The Stellar Population Histories of Local Early-Type Galaxies. I. Population Parameters, AJ, 119, 1645 https://doi.org/10.1086/301299
  63. Trager, S. C., Worthey, G., Faber, S. M., & Dressler, A., 2005, Hot Stars in Old Stellar Populations: A Continuing Need for Intermediate Ages, MNRAS, 362, 2 https://doi.org/10.1111/j.1365-2966.2005.09288.x
  64. Trager, S. C. & Somerville, R. S., 2009, Probing Recent Star Formation with Absorption-Line Strengths in Hierarchical Models and Observations, MNRAS, 395, 608 https://doi.org/10.1111/j.1365-2966.2009.14571.x
  65. Vazdekis, A., Cenarro, A. J., Gorgas, J., Cardiel, N., & Peletier, R. F., 2003, Empirical Calibration of the Near-Infrared CaII Triplet - IV. The Stellar Population Synthesis Models, MNRAS, 340, 1317 https://doi.org/10.1046/j.1365-8711.2003.06413.x
  66. Ventura, P. & D’Antona, F., 2008, Self-Enrichment by Asymptotic Giant Branch Stars in Globular Clusters: Comparison between Intermediate and High Metallicities, MNRAS, 385, 2034 https://doi.org/10.1111/j.1365-2966.2008.12970.x
  67. White, S. D. M. & Rees, M. J., 1978, Core Condensation in Heavy Halos - A Two-Stage Theory for Galaxy Formation and Clustering, MNRAS, 183, 341 https://doi.org/10.1093/mnras/183.3.341
  68. Worthey, G., 1994, Comprehensive Stellar Population Models and the Disentanglement of Age and Metallicity Effects, ApJS, 95, 107 https://doi.org/10.1086/192096
  69. Worthey, G., Faber, S. M., & Gonzalez, J. J., 1992, Mg and Fe Absorption Features in Elliptical Galaxies, ApJ, 398, 69 https://doi.org/10.1086/171836
  70. Worthey, G. & Ottaviani, D. L., 1997, $H{\gamma}$ and $H{\delta}$ Absorption Features in Stars and Stellar Populations, ApJS, 111, 337
  71. Zhu, G., Blanton, M. R., & Moustakas, J., 2010, Stellar Populations of Elliptical Galaxies in the Local Universe, ApJ, submitted, arXiv:1006.5055
  72. Yi, S. K., et al., 2005, Galaxy Evolution Explorer Ultraviolet Color-Magnitude Relations and Evidence of Recent Star Formation in Early-Type Galaxies, ApJ, 619, L111 https://doi.org/10.1086/422811

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