Hostname: page-component-745bb68f8f-s22k5 Total loading time: 0 Render date: 2025-01-26T11:55:19.392Z Has data issue: false hasContentIssue false
  • English
  • Français

Broad-band Photometric Evolution of Star Clusters

Published online by Cambridge University Press:  03 August 2017

Léo Girardi
Léo Girardi*
Affiliation:
Dipartimento di Astronomia, Università di Padova Vicolo dell'Osservatorio 5, I-35122 Padova, Italy Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85741 Garching bei München, Germany

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.

I briefly introduce a database of models that describe the evolution of star clusters in several broad-band photometric systems. Models are based on the latest Padova stellar evolutionary tracks - now including the α-enhanced case and improved AGB models - and a revised library of synthetic spectra from model atmospheres. As of today, we have revised isochrones in Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Thuan-Gunn, and Washington systems. Several other filter sets are included in a preliminary way, like those used by the EIS and SDSS projects. The database contains also integrated magnitudes of single-burst stellar populations and Monte-Carlo simulations that show the stochastic dispersion of the colours as a function of cluster mass, age, and metallicity. The models are useful for several kinds of studies, including estimates of masses and ages of extragalactic star clusters observed by means of broad-band photometry.

Type
Part 4. Star Cluster Formation and Evolution: Theory and Observation
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 625 - 629
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Bertelli, G., Bressan, A., Chiosi, C., Fagotto, F, Nasi, E., 1994, A&AS, 106, 275 Google Scholar
Bessell, M.S., Castelli, F., Plez, B., 1998, A&A 333, 231 Google Scholar
Bica, E., Clariá, J.J., Dottori, H., Santos, J.F.C. Jr., Piatti, A., 1996, ApJS 102, 57 Google Scholar
Chabrier, G., Baraffe, I., Allard, F, Hauschildt, P., 2000, ApJ 542, 464 CrossRefGoogle Scholar
Elson, R.A.W., Fall, S.M., 1985, ApJ 299, 211 Google Scholar
Fluks, M.A., Plez, B., The, P.S., de Winter, D., Westerlund, B.E., Steenman, H.C., 1994, A&AS 105, 311 Google Scholar
Geisler, D., Sarajedini, A., 1999, AJ 117, 308 Google Scholar
Girardi, L., Bica, , 1993, A&A 274, 279 Google Scholar
Girardi, L., Chiosi, C., Bertelli, G., Bressan, A., 1995, A&A, 298, 87 Google Scholar
Girardi, L., Bressan, A., Bertelli, G., Chiosi, C., 2000, A&AS 141, 371 Google Scholar
Girardi, L., Bertelli, G., Bressan, A., Chiosi, C., Groenewegen, M., Marigo, P., Salasnich, B., Tantalo, R., Weiss, A., 2001, in preparation Google Scholar
Kroupa, P., 2001, MNRAS 322, 231 Google Scholar
Marigo, P., 2001, A&A, 370, 194 Google Scholar
Marigo, P., Girardi, L., 2001, A&A submitted Google Scholar
Marigo, P., Girardi, L., Chiosi, C., Wood, P.R., 2001, A&A 371, 152 Google Scholar
Salasnich, B., Girardi, L., Weiss, A., Chiosi, C., 2000, A&A 361, 1023 Google Scholar
Searle, L., Wilkinson, A., Bagnuolo, W.G., 1980, ApJ 239, 803 Google Scholar