Padova database of stellar evolutionary tracks and isochrones

WARNING. This webpage is no longer complete, since the newest isochrones are distributed through the CMD and YZVAR interfaces. Please check these links. The present database, instead, refers to papers published before 2006 or 2007.

Index
  • Tracks and isochrones for a large region of the Z-Y plane (Bertelli et al. 2008, 2009).
  • CMD: A web interface dealing with stellar isochrones and their derivatives. CMD is now the main channel for distributing isochrones based on the Girardi et al. (2000) and Marigo et al. (2008) tracks. The web interface provides isochrones, luminosity functions, and integrated magnitudes, including an improved TP-AGB phase, proper spectra for C stars, circumstellar and interstellar dust, and for many UV to far-IR photometric systems.
  • On the effect of helium enhancement on bolometric corrections and Teff-colour relations Girardi et al. 2007, A&A, 468, 657.
  • Theoretical isochrones with an improved TP-AGB phase, i.e. including the important effect of variable molecular opacities. First release: the isochrones used in Cioni et al. (2006ab, A&A 448, 77, and A&A 452, 195), in the UBVRIJHK system. The data files allow an easy identification of the TP-AGB and C-type phases.
  • Theoretical isochrones in several photometric systems. Additional, mostly unpublished data: HST/ACS (both WFC and HRC), BATC and UKIDSS systems Girardi, "private communication".
  • Theoretical isochrones in several photometric systems. II. The Sloan Digital Sky Survey ugriz system Girardi et al. 2004, A&A 422, 205.
  • Theoretical isochrones compared to 2MASS observations: Open clusters at nearly solar metallicity Bonatto et al. 2004, A&A 415, 571.
  • The red tail of carbon stars in the LMC: Models meet 2MASS and DENIS observations Marigo, Girardi & Chiosi 2003, A&A 403, 225.
  • Theoretical isochrones in several photometric systems. I. Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Washington, and ESO Imaging Survey filter sets Girardi et al. 2002, A&A 391, 195. This database includes many already-published isochrone files, but now converted to several photometric systems according to a homogeneous and revised set of transformations.
  • Coupling emitted light and chemical yields from stars Marigo & Girardi 2001, A&A 377, 132.
  • Zero-metallicity stars I. Evolution at constant mass Marigo et al. 2001, A&A 371, 152.
  • Chemical yields from low- and intermediate-mass stars: model predictions and basic observational constraints Marigo, 2001, A&A 370, 194.
  • Evolutionary tracks and isochrones for alpha-enhanced stars Salasnich et al., 2000, A&A 361, 1023.
  • The red clump mean magnitude as a function of age and metallicity Girardi & Salaris 2001, MNRAS 323, 109.
  • Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 Msun, and from Z=0.0004 to 0.03 Girardi et al., 2000, A&AS 141, 371.
  • Evolutionary sequences of stellar models with new radiative opacities Bressan et al. 1993, Fagotto et al. 1994abc, and Girardi et al. 1996
  • Theoretical isochrones from models with new radiative opacities Bertelli et al. 1994, and Girardi et al. 1996
  • Personal home pages

    • On the effect of helium enhancement on bolometric corrections and Teff-colour relations
    L. Girardi, F. Castelli, G. Bertelli, E. Nasi, A&A, 468, 657
    Tables and plots that help to evaluate the effect of He enhancement (or differences in the helium content) on bolometric corrections and Teff-colour relations
  • Here is Table 1 in electronic form.
  • Here is the complete set of plots similar to Figure 2 in a single tar.gz file.
  • The original ATLAS9 spectral energy distributions are in Fiorella Castelli's database.

    • AGB stars in the Magellanic Clouds. III. The rate of star formation across the Small Magellanic Cloud
    Cioni, M.-R. L., Girardi, L., Marigo, P., & Habing, H. J. 2006b, Astronomy and Astrophysics 452, 195
    AGB stars in the Magellanic Clouds. II. The rate of star formation across the Large Magellanic Cloud
    Cioni, M.-R. L., Girardi, L., Marigo, P., & Habing, H. J. 2006a, Astronomy and Astrophysics 448, 77

    These are theoretical isochrones with an improved TP-AGB phase, i.e. including the crucial effect of variable molecular opacities (see also Marigo et al. 2003, A&A 403, 225 The red tail of carbon stars in the LMC: Models meet 2MASS and DENIS observations, and Marigo 2002, A&A 387, 507 Asymptotic Giant Branch evolution at varying surface C/O ratio: effects of changes in molecular opacities). This is just the first release, with the isochrones used in Cioni et al. (2006ab, A&A 448, 77, and A&A 452, 195), in the UBVRIJHK system. The data files allow an easy identification of the TP-AGB and C-type phases.
  • Here are the Isochrone tables in a single tar gzipped file (2.7 Mby), including a readme file.

    • The red tail of carbon stars in the LMC: Models meet 2MASS and DENIS observations
    Marigo P., Girardi L., Chiosi C., 2003, A&A 403, 225.

    Preprint, better if printed in colour. The related isochrones are in preparation and will be available soon.
  • Paper preprint - low resolution figures , pdf file (0.5 Mby).
  • Paper preprint - high resolution figures, pdf file (just 19 Mby, but hard to print!).

    • Coupling emitted light and chemical yields from stars: a basic constraint to population synthesis models of galaxies
    Marigo P., Girardi L., 2001, A&A 377, 132.

    The following links contain the paper and the data described in its Appendix A:
  • Electronic paper.
  • readme.txt file ascii file, 8 Kby.
  • Isochrone tables in a single tar gzipped file (3.1 Mby).
  • Stellar fuel tables (Tables A.1 - A.3) in a single tar gzipped file (1.5 Kby).

    • Zero-metallicity stars I. Evolution at constant mass
    Marigo P., Girardi L., Chiosi C., Wood P.R., 2001, A&A 371, 152.

    The following files contain new sets of evolutionary tracks and isochrones for stars of initial zero-metallicity. Stellar evolutionary tracks cover the mass range from 0.7 to 100 Msun, and extend from the ZAMS up to either the beginning of the TP-AGB phase or to carbon ignition.
  • Electronic paper
  • readme_z0.txt file ascii file, 8 Kby.
  • All data tables in a single tar gzipped file (0.9 Mby).

    • Chemical yields from low- and intermediate-mass stars: model predictions and basic observational constraints
    Marigo P., 2001, A&A 370, 194.

    The following files contain new sets of stellar yields derived from evolutionary calculations of low- and intermediate-mass stars (Mi = 0.9 - 5 Msun) that extend from the ZAMS up to the end of the AGB phase. Surface chemical changes account for the effects of the first, second, and third dredge-ups, and hot-bottom burning. Stellar yields of H, He, and main CNO elements are given for stars of initial metallicities Z=0.004, Z=0.008, and Z=0.019, together with the predicted chemical abundances of planetary nebulae.
  • Electronic paper
  • All data tables and read.me files in a single tar gzipped file (15 Mby).

    • Evolutionary tracks and isochrones for alpha-enhanced stars
    B. Salasnich, L. Girardi, A. Weiss, C. Chiosi, 2000, A&A 361, 1023.
    These files contain stellar models with enhancement of alpha elements, together with those computed with solar-scaled composition and otherwise identical input physics. The mass interval goes from 0.15 to 20 Msun. Isochrones are presented in Johnson-Cousins and HST/WFPC2 (STMAG and VEGAMAG) photometric systems.
  • read.me file ascii file, 10 Kby.
  • Electronic paper
  • Paper preprint postscript gzipped file, 214 Kby.
  • Data tables (all in tar gzipped files)

    		•  Z=0.008 Y=0.250 Z=0.019 Y=0.273 Z=0.040 Y=0.320 Z=0.070 Y=0.390
    TRACKS
    solar-scaled 130Kb
    a-enhanced 128Kb
    solar-scaled 132Kb
    a-enhanced 126Kb
    solar-scaled 117Kb
    a-enhanced 124Kb
    solar-scaled 123Kb
    a-enhanced 124Kb
    ISOCHRONES
    solar-scaled 1.73Mb
    a-enhanced 1.72Mb
    solar-scaled 1.72Mb
    a-enhanced 1.72Mb
    solar-scaled 1.54Mb
    a-enhanced 1.59Mb
    solar-scaled 1.43Mb
    a-enhanced 1.44Mb
    SSP-COLOURS
    solar-scaled 7Kb
    a-enhanced 7Kb
    solar-scaled 7Kb
    a-enhanced 7Kb
    solar-scaled 7Kb
    a-enhanced 7Kb
    solar-scaled 7Kb
    a-enhanced 7Kb

    The red clump mean magnitude as a function of age and metallicity
    L. Girardi, M Salaris, 2001, MNRAS 323, 109.
    These tables include more filters than the one in the paper.
  • All tables in a single tar.gz file, 21 Kby.

    • Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 Msun, and from Z=0.0004 to 0.03
    L. Girardi, A. Bressan, G. Bertelli, C. Chiosi, 2000, A&AS 141, 371.
    These files contain an extended set of stellar evolutionary tracks and isochrones, completed in Sept. 1999.
  • read.me file ascii file, 12 Kby.
  • Electronic paper
  • Paper preprint postscript gzipped file, 244 Kby.
  • Track tables all evolutionary tracks in a single tar gzipped file, 0.7 Mby.
  • Z=0.0004 tracks tar gzipped file, 110 Kby.
  • Z=0.001 tracks tar gzipped file, 107 Kby.
  • Z=0.004 tracks tar gzipped file, 100 Kby.
  • Z=0.008 tracks tar gzipped file, 108 Kby.
  • Z=0.019 tracks tar gzipped file, 106 Kby.
  • Z=0.030 tracks tar gzipped file, 109 Kby.
  • Z=0.019 tracks without overshooting tar gzipped file, 68 Kby.
  • Isochrone tables all isochrones and summary tables in a single tar gzipped file, 2.9 Mby.
  • Z=0.0004 isochrones tar gzipped file, 424 Kby.
  • Z=0.001 isochrones tar gzipped file, 417 Kby.
  • Z=0.004 isochrones tar gzipped file, 419 Kby.
  • Z=0.008 isochrones tar gzipped file, 415 Kby.
  • Z=0.019 isochrones tar gzipped file, 407 Kby.
  • Z=0.030 isochrones tar gzipped file, 392 Kby.
  • Z=0.019 isochrones without overshootingtar gzipped file, 423 Kby.
  • Surface chemical compositionstar gzipped file, 6 Kby.
  • Integrated broad-band colours tar gzipped file, 9 Kby.
    • Frequently asked questions and additional data , including
  • Isochrones in Vilnius and HST/WFPC2 photometric systems.
  • Isochrones extended to younger ages.
  • The red giant clump as a function of age and metallicity.

    • Evolutionary sequences of stellar models with new radiative opacities
    These tracks cover the mass interval from 0.6 to 120 Msun, for 7 different metallicities. They are described in the following papers:
    [Y=0.230, Z=0.0001] (OPAL): Girardi L., Bressan A., Chiosi C., Bertelli G., Nasi E., 1996, A&AS 117, 113
    [Y=0.230, Z=0.0004] (OPAL): Fagotto F., Bressan A., Bertelli G., Chiosi C., 1994a A&AS 104,365
    [Y=0.240, Z=0.004] (OPAL): Fagotto F., Bressan A., Bertelli G., Chiosi C., 1994b A&AS 105,29
    [Y=0.250, Z=0.008] (OPAL): Fagotto F., Bressan A., Bertelli G., Chiosi C., 1994b A&AS 105,29
    [Y=0.280, Z=0.02] (OPAL): Bressan A., Fagotto F., Bertelli G., Chiosi C., 1993 A&AS 100,647
    [Y=0.352, Z=0.05] (OPAL): Fagotto F., Bressan A., Bertelli G., Chiosi C., 1994a A&AS 104,365
    [Y=0.475, Z=0.10] (LAOL): Fagotto F., Bressan A., Bertelli G., Chiosi C., 1994c A&AS 105,39
  • Track tables all evolutionary tracks in a single tar gzipped file, 1.2 Mby.

    • Theoretical isochrones from models with new radiative opacities
    These isochrones are derived from the evolutionary tracks listed in the item above. They are described in:
    Bertelli G., Bressan A., Chiosi C., Fagotto F., Nasi E., 1994, A&AS 106,275 (for most isochrones)
    Girardi L., Bressan A., Chiosi C., Bertelli G., Nasi E., 1996, A&AS 117, 113 (isochrones with Z=0.0001)
  • Isochrone tables all isochrones in a single tar gzipped file, 1.0 Mby.

    • Personal home pages
  • Léo Girardi
    • Mantained by Léo Girardi

    Last modified: Nov 01, 2009