Hostname: page-component-5cf477f64f-mgq6s Total loading time: 0 Render date: 2025-04-03T07:24:25.249Z Has data issue: false hasContentIssue false
  • English
  • Français

The Stellar Ages of Elliptical Galaxies

Published online by Cambridge University Press:  07 August 2017

S.M. Faber ,
S.C. Trager ,
J.J. Gonzalez  and
Guy Worthey
S.M. Faber
Affiliation:
UCO/Lick Observatory, UC Santa Cruz, Santa Cruz CA 95064 ([email protected])
S.C. Trager
Affiliation:
UCO/Lick Observatory, UC Santa Cruz, Santa Cruz CA 95064 ([email protected])
J.J. Gonzalez
Affiliation:
Instituto de Astronomia, UNAM, AP70-264, DF 04510 Mexico City, Mexico
Guy Worthey
Affiliation:
Dept. of Astronomy, Univ. of Michigan, Ann Arbor, MI 48109-1090

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Integrated broad-band colors and metallic lines cannot discriminate clearly between the effects of age and Z in old stellar populations. Such data are more sensitive to Z than to age. The Hβ feature provides a way to break this degeneracy. New measurements indicate that the mean stellar ages of typical E galaxy nuclei are fairly young, ranging from 2 to ~12 Gyr. The outer parts of E galaxies are both older and more metal-poor than nuclei, consistent with the formation of E galaxies via mergers and starbursts. Age effects contribute strongly to the classic color-line strength sequence of E galaxies.

Type
Session 6: Stellar Populations in Elliptical Galaxies
Information
Symposium - International Astronomical Union , Volume 164: Stellar Populations , 1995 , pp. 249 - 257
Copyright
Copyright © Kluwer 1995 

References

Bessell, M.S., Brett, J.M., Scholz, M. and Wood, P.R., 1989, A. & A. Suppl. 77, 1 Google Scholar
Bessell, M.S., Brett, J.M., Scholz, M. and Wood, P.R., 1991, A. & A. Suppl. 89, 335 Google Scholar
Charlot, S. and Silk, J., 1994, Ap. J. 432, 453 Google Scholar
Dorman, B., O'Connell, R.W. and Rood, R.T., 1994, Ap. J., submitted Google Scholar
Faber, S.M., 1972, A. & A. 20, 361 Google Scholar
Faber, S.M., 1973, Ap. J. 179, 731 Google Scholar
Fagotto, F., Bressan, A., Bertelli, G. and Chiosi, C., 1994a, A. & A. Suppl. 104, 365 Google Scholar
Fagotto, F., Bressan, A., Bertelli, G. and Chiosi, C., 1994b, A. & A. Suppl. 105, 39 Google Scholar
Ferraro, F.R., Fusi Pecci, F., Cacciari, C., Corsi, C., Buonanno, R., Fahlman, G.G. and Richer, H.B., 1993, A. J. 106, 2324 Google Scholar
Gonzalez, J. J., 1993, , University of California, Santa Cruz Google Scholar
Gorgas, J., Faber, S.M., Burstein, D., Gonzalez, J.J., Courteau, S. and Prosser, C., 1993, Ap. J. Suppl 86, 153 Google Scholar
Green, E.M., Demarque, P. and King, C.R., 1987, The Revised Yale Isochrones and Luminosity Functions, New Haven: Yale University Observatory Google Scholar
Horch, E., Demarque, P. and Pinsonneault, M., 1992, Ap. J. 388, L53 Google Scholar
Kurucz, R.L., 1992, private communication Google Scholar
Lee, Y.-W., 1994, Ap. J. 430, L113 Google Scholar
O'Connell, R.W., 1976, Ap. J. 236, 430 Google Scholar
O'Connell, R.W., 1980, Ap. J. 236, 430 Google Scholar
Peletier, R.F., 1993, , Rijksuniversiteit Groningen Google Scholar
Pickles, A.J., 1985, Ap. J. 296, 340 CrossRefGoogle Scholar
Rose, J.A. (1994) A. J. 107, 206 Google Scholar
Schweizer, F., 1983, Internal Kinematics and Dynamics of Galaxies, I.A.U, Symp. 100, ed. Athanassoula, E., Reidel, p.319 Google Scholar
Schweizer, F., Seitzer, P., Faber, S.M., Burstein, D., Dalle Ore, C.M. and Gonzalez, J.J., 1990, Ap. J. 364, L33 Google Scholar
Sigurdsson, S., Davies, M.B. and Bolte, M., 1994, Ap. J. 431, L115 Google Scholar
Spinrad, H. and Taylor, B.J., 1971, Ap. J. Suppl. 22, 445 Google Scholar
Tinsley, B.M., 1980, Ap. J. 241, 41 Google Scholar
Trager, S.C., Faber, S.M., Worthey, G., Gonzalez, J.J. and Burstein, D., 1994, in preparation Google Scholar
VandenBerg, D.A., 1985, Ap. J. Suppl. 58, 711 Google Scholar
VandenBerg, D.A. and Bell, R.A., 1985, Ap. J. Suppl. 58, 561 Google Scholar
VandenBerg, D.A. and Laskarides, P.G., 1987, Ap. J. Suppl. 64, 103 Google Scholar
Whipple, F.L., 1935, Harv. Coll. Obs. Circ. 404, 1 Google Scholar
Worthey, G., Faber, S.M. and Gonzalez, J.J., 1992, Ap. J. 398, 69 CrossRefGoogle Scholar
Worthey, G., Faber, S.M., Gonzalez, J.J. and Burstein, D., 1994, Ap. J. Suppl. 94, 687 CrossRefGoogle Scholar
Worthey, G., 1994, Ap. J. Suppl., in press Google Scholar