Data Products


Warning: an error was found in the stellar track files. Please discard all files mod*_lej.dat, and mod*_lej.dat.* downloaded before dec 13, 2000 ! All concerned files have now been replaced.

The present database includes all stellar tracks listed in column 2 of Table 1 with a database ID. Corresponding isochrones covering the age range from 10$^3$ yr to 16 or 20 Gyr are provided in Table 2. In both cases the data contains the fundamental stellar parameters and all predicted surface properties. Files including the predicted synthetic photometry are provided for all tracks and isochrones. See the content for a description of the content of the respective files.


Access to the models:
[ Stellar Tracks ]    [ Isochrones ]
[ Complete archives of stellar models]

Related models (not included in Lejeune & Schaerer 2000):
[BaSeL photometric interpolation engine]



Stellar tracks


The stellar tracks are grouped in files named according to the following conventions: modIzzz.ext, where I stands for the database ID (col. 2 of Table 2), zzz for the metallicity, and ext for the extension specifying the type of data (see Table 3). For example modc001.WFPC2 contains the WFPC2 photometric data for all stellar tracks of the model grid # 2.

Grids 1-16 are included integrally in the database. The files with the ID ``c'' or ``e'' contain the 1.25 M/M$_{\odot}$ track calculated with overshooting. The corresponding no overshoot model is found in the ``o'' files, as indicated in col. 9 of Table 1. The ``l'' model set, providing the most appropriate low mass star models, consist of the following combination of tracks: 0.4-1 M/M$_{\odot}$ main sequence tracks from paper VIII (grids 15, 17 respectively), post-He flash models for 0.9 and 1 M/M$_{\odot}$ from paper VI (with ages properly adjusted to the calculations of paper VIII), 1.25 (no overshoot), 1.5, and 1.7 M/M$_{\odot}$ tracks from paper VI (grids 13, 14 respectively), and 2 and 2.5 M/M$_{\odot}$ tracks from paper I (grids 2, 5).

Table 1 Summary of stellar grids included in the database.
[To dowload a file, click on the its ID in the first column.]
Grid database $Z$ $X$ $Y$ $\dot{M}$ mass range paper$^{(*)}$ description
# ID              
(1) (2) (3) (4) (5) (6) (7) (8) (9)

Basic grids:
         
1 e 0.0004 0.7584 0.2412 2$\times$std 0.8 - 150 M/M$_{\odot}$ this paper basic grid
2 c 0.001 0.756 0.243 standard 0.8 - 120 M/M$_{\odot}$ I basic grid
3 c 0.004 0.744 0.252 standard 0.8 - 120 M/M$_{\odot}$ III basic grid
4 c 0.008 0.728 0.264 standard 0.8 - 120 M/M$_{\odot}$ II basic grid
5 c 0.020 0.680 0.300 standard 0.8 - 120 M/M$_{\odot}$ I basic grid
6 c 0.040 0.620 0.340 standard 0.8 - 120 M/M$_{\odot}$ IV basic grid
7 c 0.100 0.420 0.480 standard 0.8 - 60 M/M$_{\odot}$ VII basic grid
                 
Extended grids:          
8 e 0.001 0.756 0.243 2$\times$std: M >= 25 M/M 0.8 - 120 M/M$_{\odot}$ V, I high mass loss for massive stars
9 e 0.004 0.744 0.252 2$\times$std: M >= 20 M/M 0.8 - 120 M/M$_{\odot}$ V, III high mass loss for massive stars
10 e 0.008 0.728 0.264 2$\times$std: M >= 15 M/M 0.8 - 120 M/M$_{\odot}$ V, II high mass loss for massive stars
11 e 0.020 0.680 0.300 2$\times$std: M >= 15 M/M 0.8 - 120 M/M$_{\odot}$ V, I high mass loss for massive stars
12 e 0.040 0.620 0.340 2$\times$std: M >= 12 M/M 0.8 - 120 M/M$_{\odot}$ V, IV high mass loss for massive stars
13 p 0.001 0.756 0.243 standard 0.8 - 1.7 M/M$_{\odot}$ VI including HB and EAGB
14 p 0.020 0.680 0.300 standard 0.8 - 1.7 M/M$_{\odot}$ VI including HB and EAGB
15 m 0.001 0.756 0.243 standard 0.4 - 1.0 M/M$_{\odot}$ VIII MHD equation of state
16 m 0.020 0.700 0.280 standard 0.4 - 1.0 M/M$_{\odot}$ VIII MHD equation of state
17 not included 0.020 0.680 0.300 standard 0.4 - 1.0 M/M$_{\odot}$ VIII MHD equation of state
                 
Alternate and combined model sets:          
X o 0.0004 0.7584 0.2412 2$\times$std 0.8 - 2.5 M/M$_{\odot}$ this paper no overshooting: 1.25 M/M$_{\odot}$
X o 0.001 0.756 0.243 standard 0.8 - 2.5 M/M$_{\odot}$ I no overshooting: 1.25 M/M$_{\odot}$
X o 0.004 0.744 0.252 standard 0.8 - 2.5 M/M$_{\odot}$ III no overshooting: 1.25 M/M$_{\odot}$
X o 0.008 0.728 0.264 standard 0.8 - 2.5 M/M$_{\odot}$ II no overshooting: 1.25 M/M$_{\odot}$
X o 0.020 0.680 0.300 standard 0.8 - 2.5 M/M$_{\odot}$ I no overshooting: 1.25 M/M$_{\odot}$
X o 0.040 0.620 0.340 standard 0.8 - 2.5 M/M$_{\odot}$ IV no overshooting: 1.25 M/M$_{\odot}$
X l 0.001 0.756 0.243 standard 0.4 - 2.5 M/M$_{\odot}$   combination: grids 15, 13, 2
X l 0.020 0.680 0.300 standard 0.4 - 2.5 M/M$_{\odot}$   combination: grids 17, 14, 5

               




Isochrones


For each of the database sets a large number of isochrones have been calculated. A summary of the available data, together with the covered age range is shown in Table 2. Isochrones are provided for timesteps of $\Delta \log t=$ 0.05 dex for ages above 1 Myr. For younger ages isochrones are available for 3.0, 5.0, 5.3, 5.6, 5.8, and 5.9 yr.

The isochrones are grouped in files named according to the following conventions: iso_Izzz_ffff_tttt.ext, where I stands for the database ID (col. 2), zzz for the metallicity, ffff and tttt indicate the logarithmic age range (from - to) covered by isochrones, and ext for the extension specifying the type of data (see Table 3). For example iso_c001_0300_1020.UBVRIJHKLM includes the (UBV)$_J$(RI)$_C$ JHKLL$^\prime$M photometry of all isochrones with ages from 10$^3$ yr to 10 yr ($\sim$ 15.8 Gyr) of grid # 2.

The content of the files is the same as for the stellar tracks described above, with the following exceptions: column 1 is replaced by a line number, and column 2 now gives the initial mass along the isochrone.

Table 2 Summary of isochrone sets included in the database. The database ID (col. 1), metallicity (2), and a brief description of the main characteristics (5) are indicated. The logarithmic age range (in years) covered by the isochrones is given in columns 3 and 4. Isochrones are provided for time steps of $\Delta \log t=$ 0.05 dex. for ages above 1 Myr. For younger ages isochrones are for 3.0, 5.0, 5.3, 5.6, 5.8, and 5.9 yr.

Database
$Z$ age range () description    
ID   from to      
(1) (2) (3) (4) (5)    

Basic grids:
     
e 0.0004 3.00 10.20 basic grid    
c 0.001 3.00 10.20 basic grid    
c 0.004 3.00 10.20 basic grid    
c 0.008 3.00 10.20 basic grid    
c 0.020 3.00 10.20 basic grid    
c 0.040 3.00 10.20 basic grid    
c 0.100 3.00 10.20 basic grid    
             
Extended grids:      
e 0.001 3.00 7.50 high mass loss for massive stars    
e 0.004 3.00 7.50 high mass loss for massive stars    
e 0.008 3.00 7.50 high mass loss for massive stars    
e 0.020 3.00 7.50 high mass loss for massive stars    
e 0.040 3.00 7.50 high mass loss for massive stars    
p 0.001 9.00 10.20 including HB and EAGB phases for low mass stars    
p 0.020 9.00 10.20 including HB and EAGB phases for low mass stars    
m 0.001 9.00 10.30 MHD equation of state for low mass stars    
m 0.020 9.00 10.30 MHD equation of state for low mass stars    
             
Alternate and combined model sets:      
o 0.0004 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
o 0.001 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
o 0.004 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
o 0.008 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
o 0.020 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
o 0.040 9.00 10.20 no overshooting: 1.25 M/M$_{\odot}$    
l 0.001 9.00 10.30 combination ``best'' low mass star models    
l 0.020 9.00 10.30 combination ``best'' low mass star models    

           




Complete archives of stellar models

Table 3: Description of file extensions ext used for the stellar tracks ( mod*.ext) and isochrones ( iso*.ext).

File extension
description  

dat
Complete set of predicted surface stellar properties -- download tar-file with all tracks  
UBVRIJHKLM Main stellar properties and photometric data for (UBV)$_J$(RI)$_C$ JHKLL$^\prime $M system -- tar-file with all isochrones+tracks  
WFPC2 Main stellar properties and photometric data for WFPC2 system -- tar-file with all isochrones+tracks  
geneva Main stellar properties and photometric data for Geneva system -- tar-file with all isochrones+tracks  
CMT1T2 Main stellar properties and photometric data for Washington system -- tar-file with all isochrones+tracks  



Content


The content of the various files is as follows:


Thibault Lejeune
Last modified: Mon Nov 27 11:21:30 WET 2000