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J/A+A/502/817    SSP models for star clusters in tidal fields    (Anders+, 2009)

The photometric evolution of dissolving star clusters. II. Realistic models. Colours and M/L ratios. Anders P., Lamers H.J.G.L.M., Baumgardt H. <Astron. Astrophys. 502, 817 (2009)> =2009A&A...502..817A
ADC_Keywords: Models, evolutionary ; Photometry Keywords: Galaxy: globular clusters: general - Galaxy: open clusters and associations: general - galaxies: star clusters - methods: data analysis Abstract: Evolutionary synthesis models are the primary means of constructing spectrophotometric models of stellar populations, and deriving physical parameters from observations compared with these models. One of the basic assumptions of evolutionary synthesis models has been the time-independence of the stellar mass function, apart from the successive removal of high-mass stars by stellar evolution. However, dynamical simulations of star clusters in tidal fields have demonstrated that the mass function can be changed by the preferential removal of low-mass stars from clusters. We combine the results of dynamical simulations of star clusters in tidal fields with our evolutionary synthesis code GALEV. We extend the models to consider the total cluster disruption time as additional parameter. Description: Simple Stellar Population (SSP) models for star clusters in tidal fields, based on the GALEV code (GALEV group webpage All models are calculated for a universal Kroupa (2001) IMF and for Padova isochrones (Isochrones from the Padova group, as described in Bertelli et al., 1994A&AS..106..275B, Cat. J/A+AS/106/275 and references therein; with an update on TP-AGB phase 1999). Data are available at The site is going to be updated regularly. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file filelist.dat 86 304 List of all the model parameters (Z, tdis) mag/* 840 304 Integrated magnitudes of the clusters as a function of age in various passbands mass/* 56 304 Cluster masses as a function of age ori/* 0 7 Original files
See also: J/A+AS/106/275 : Theoretical isochrones (Bertelli+ 1994) : Models Home Page Byte-by-byte Description of file: filelist.dat
Bytes Format Units Label Explanations
1- 6 F6.4 --- Z Initial metallicity Z (1) 8- 11 F4.1 --- [Fe/H] Initial metallicity [Fe/H] 13- 20 E8.3 yr tdis Dissolution timescale (from 100Myr to 200Gyr) 23- 54 A32 ---- Mass Name of the file with mass data in "mass" subdirectory 55- 86 A32 ---- Mag Name of the file with magnitudes in "mag" subdirectory
Note (1): Initial metallicities are 0.0004, 0.004, 0.008, 0.02 and 0.05.
Byte-by-byte Description of file: mag/*
Bytes Format Units Label Explanations
1- 4 I4 --- SpecNo Spectral number 6- 15 E10.6 yr Age Cluster age 17- 26 F10.6 mag F220W HST ACS HRC F220W absolute magnitude (1) 28- 37 F10.6 mag F250W HST ACS HRC F250W absolute magnitude (1) 39- 48 F10.6 mag F330W HST ACS HRC F330W absolute magnitude (1) 50- 59 F10.6 mag F435W HST ACS HRC F435W absolute magnitude (1) 61- 70 F10.6 mag F475W HST ACS HRC F475W absolute magnitude (1) 72- 81 F10.6 mag F550M HST ACS HRC F550M absolute magnitude (1) 83- 92 F10.6 mag F555W HST ACS HRC F555W absolute magnitude (1) 94-103 F10.6 mag F606W HST ACS HRC F606W absolute magnitude (1) 105-114 F10.6 mag F625W HST ACS HRC F625W absolute magnitude (1) 116-125 F10.6 mag F775W HST ACS HRC F775W absolute magnitude (1) 127-136 F10.6 mag F814W HST ACS HRC F814W absolute magnitude (1) 138-147 F10.6 mag F850LP HST ACS HRC F850LP absolute magnitude (1) 149-158 F10.6 mag F435Wc1 HST ACS WFC chip1 F435W absolute magnitude (1) 160-169 F10.6 mag F475Wc1 HST ACS WFC chip1 F475W absolute magnitude (1) 171-180 F10.6 mag F550Mc1 HST ACS WFC chip1 F550M absolute magnitude (1) 182-191 F10.6 mag F555Wc1 HST ACS WFC chip1 F555W absolute magnitude (1) 193-202 F10.6 mag F606Wc1 HST ACS WFC chip1 F606W absolute magnitude (1) 204-213 F10.6 mag F625Wc1 HST ACS WFC chip1 F625W absolute magnitude (1) 215-224 F10.6 mag F775Wc1 HST ACS WFC chip1 F775W absolute magnitude (1) 226-235 F10.6 mag F814Wc1 HST ACS WFC chip1 F814W absolute magnitude (1) 237-246 F10.6 mag F850LPc1 HST ACS WFC chip1 F850LP absolute magnitude (1) 248-257 F10.6 mag F435Wc2 HST ACS WFC chip2 F435W absolute magnitude (1) 259-268 F10.6 mag F475Wc2 HST ACS WFC chip2 F475W absolute magnitude (1) 270-279 F10.6 mag F550Mc2 HST ACS WFC chip2 F550M absolute magnitude (1) 281-290 F10.6 mag F555Wc2 HST ACS WFC chip2 F555W absolute magnitude (1) 292-301 F10.6 mag F606Wc2 HST ACS WFC chip2 F606W absolute magnitude (1) 303-312 F10.6 mag F625Wc2 HST ACS WFC chip2 F625W absolute magnitude (1) 314-323 F10.6 mag F775Wc2 HST ACS WFC chip2 F775W absolute magnitude (1) 325-334 F10.6 mag F814Wc2 HST ACS WFC chip2 F814W absolute magnitude (1) 336-345 F10.6 mag F850LPc2 HST ACS WFC chip2 F850LP absolute magnitude (1) 347-356 F10.6 mag F110W HST NICMOS NIC2 F110W absolute magnitude (1) 358-367 F10.6 mag F160W HST NICMOS NIC2 F160W absolute magnitude (1) 369-378 F10.6 mag F187W HST NICMOS NIC2 F187W absolute magnitude (1) 380-389 F10.6 mag F205W HST NICMOS NIC2 F205W absolute magnitude (1) 391-400 F10.6 mag F222M HST NICMOS NIC2 F222M absolute magnitude (1) 402-411 F10.6 mag F237M HST NICMOS NIC2 F237M absolute magnitude (1) 413-422 F10.6 mag F336W1 HST WFPC1 F336W absolute magnitude (1) 424-433 F10.6 mag F439W1 HST WFPC1 F439W absolute magnitude (1) 435-444 F10.6 mag F547M1 HST WFPC1 F547M absolute magnitude (1) 446-455 F10.6 mag F555W1 HST WFPC1 F555W absolute magnitude (1) 457-466 F10.6 mag F606W1 HST WFPC1 F606W absolute magnitude (1) 468-477 F10.6 mag F675W1 HST WFPC1 F675W absolute magnitude (1) 479-488 F10.6 mag F785LP1 HST WFPC1 F785LP absolute magnitude (1) 490-499 F10.6 mag F814W1 HST WFPC1 F814W absolute magnitude (1) 501-510 F10.6 mag F160BW2 HST WFPC2 F160BW absolute magnitude (1) 512-521 F10.6 mag F170W2 HST WFPC2 F170W absolute magnitude (1) 523-532 F10.6 mag F185W2 HST WFPC2 F185W absolute magnitude (1) 534-543 F10.6 mag F218W2 HST WFPC2 F218W absolute magnitude (1) 545-554 F10.6 mag F255W2 HST WFPC2 F255W absolute magnitude (1) 556-565 F10.6 mag F300W2 HST WFPC2 F300W absolute magnitude (1) 567-576 F10.6 mag F336W2 HST WFPC2 F336W absolute magnitude (1) 578-587 F10.6 mag F380W2 HST WFPC2 F380W absolute magnitude (1) 589-598 F10.6 mag F410W2 HST WFPC2 F410W absolute magnitude (1) 600-609 F10.6 mag F439W2 HST WFPC2 F439W absolute magnitude (1) 611-620 F10.6 mag F450W2 HST WFPC2 F450W absolute magnitude (1) 622-631 F10.6 mag F467M2 HST WFPC2 F467M absolute magnitude (1) 633-642 F10.6 mag F547M2 HST WFPC2 F547M absolute magnitude (1) 644-653 F10.6 mag F555W2 HST WFPC2 F555W absolute magnitude (1) 655-664 F10.6 mag F569W2 HST WFPC2 F569W absolute magnitude (1) 666-675 F10.6 mag F606W2 HST WFPC2 F606W absolute magnitude (1) 677-686 F10.6 mag F622W2 HST WFPC2 F622W absolute magnitude (1) 688-697 F10.6 mag F675W2 HST WFPC2 F675W absolute magnitude (1) 699-708 F10.6 mag F702W2 HST WFPC2 F702W absolute magnitude (1) 710-719 F10.6 mag F791W2 HST WFPC2 F791W absolute magnitude (1) 721-730 F10.6 mag F814W2 HST WFPC2 F814W absolute magnitude (1) 732-741 F10.6 mag Umag Standard Johnson U absolute magnitude (1) 743-752 F10.6 mag Bmag Standard Johnson B absolute magnitude (1) 754-763 F10.6 mag Vmag Standard Johnson V absolute magnitude (1) 765-774 F10.6 mag Rcmag Standard Cousins R absolute magnitude (1) 776-785 F10.6 mag Icmag Standard Cousins I absolute magnitude (1) 787-796 F10.6 mag Jmag Standard Bessel-Brett J absolute magnitude (1) 798-807 F10.6 mag Hmag Standard Bessel-Brett H absolute magnitude (1) 809-818 F10.6 mag Kmag Standard Bessel-Brett K absolute magnitude (1) 820-829 F10.6 mag Rmag Standard Johnson R absolute magnitude (1) 831-840 F10.6 mag Imag Standard Johnson I absolute magnitude (1)
Note (1): In Vega system.
Byte-by-byte Description of file (# headlines): mass/*
Bytes Format Units Label Explanations
1- 12 E12.7 yr Age Cluster age 16- 23 F8.1 solMass MassT Total mass of the cluster 27- 34 F8.1 solMass MassL Luminous mass of the cluster 38- 45 F8.1 solMass MassR Mass in stellar remnants inside the cluster 48- 56 F9.7 --- Frac Mass fraction in stellar remnants from stellar evolution alone
Acknowledgements: Peter Anders, p.anders(at)
(End) Patricia Vannier [CDS] 04-Jun-2009
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