1. Use the ADC Data Viewer Suite to visualize the data. |
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VI/70 Galaxy Isochrone Synthesis Spectral Evolution Library (Bruzual+ 1993) -------------------------------------------------------------------------------- Galaxy Isochrone Synthesis Spectral Evolution Library Bruzual G.A., Charlot S. <Astrophys. J. 405, 538 (1993)> =1993ApJ...405..538B -------------------------------------------------------------------------------- ADC_Keywords: Galaxies, spectra ; Galaxies, models Keywords: Evolution Description: The models in this catalog were produced by spectral synthesis of stellar energy distributions for various initial mass functions and several functions for the star formation rate. The resulting models are the spectral evolution of a galaxy over gigayears of time. This catalog contains the files computed with the Bruzual and Charlot (1993) Isochrone Synthesis Spectral Evolutionary Code. This set of models will be referred to as the Galaxy Isochrone Synthesis Spectral Evolution Library (GISSEL, Bruzual and Charlot 1993). The original tar file distribution by Bruzual is the basis for this catalog. The binary Spectral Energy Distribution (S.E.D.) files have been converted to fits by the ADC. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file (based on README in original) sspms1.fit 2880 392 Simple Stellar Population Spectral En Distrib sspms11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspms12c.dat 130 220 colors sspms13c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspms14c.dat 76 220 evolutionary flux, supernova & PN rates sspms2.fit 2880 392 Simple Stellar Population S.E.D. sspms21c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspms22c.dat 130 220 colors sspms23c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspms24c.dat 76 220 evolutionary flux, supernova & PN rates sspms3.fit 2880 392 Simple Stellar Population S.E.D. sspms31c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspms32c.dat 130 220 colors sspms33c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspms34c.dat 76 220 evolutionary flux, supernova & PN rates sspms42.fit 2880 392 Simple Stellar Population S.E.D. sspms41c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspms42c.dat 130 220 colors sspms43c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspms44c.dat 76 220 evolutionary flux, supernova & PN rates sspms5.fit 2880 392 Simple Stellar Population S.E.D. sspms51c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspms52c.dat 130 220 colors sspms53c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspms54c.dat 76 220 evolutionary flux, supernova & PN rates sspsc1.fit 2880 392 Simple Stellar Population S.E.D. sspsc11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsc12c.dat 130 220 colors sspsc13c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsc14c.dat 76 220 evolutionary flux, supernova & PN rates sspsc2.fit 2880 392 Simple Stellar Population S.E.D. sspsc21c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsc22c.dat 130 220 colors sspsc23c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsc24c.dat 76 220 evolutionary flux, supernova & PN rates sspsc3.fit 2880 392 Simple Stellar Population S.E.D. sspsc31c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsc32c.dat 130 220 colors sspsc33c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsc34c.dat 76 220 evolutionary flux, supernova & PN rates sspsc4.fit 2880 392 Simple Stellar Population S.E.D. sspsc41c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsc42c.dat 130 220 colors sspsc43c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsc44c.dat 76 220 evolutionary flux, supernova & PN rates sspsc5.fit 2880 392 Simple Stellar Population S.E.D. sspsc51c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsc52c.dat 130 220 colors sspsc53c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsc54c.dat 76 220 evolutionary flux, supernova & PN rates sspsp1.fit 2880 392 Simple Stellar Population S.E.D. sspsp11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsp12c.dat 130 220 colors sspsp13c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsp14c.dat 76 220 evolutionary flux, supernova & PN rates sspsp2.fit 2880 392 Simple Stellar Population S.E.D. sspsp21c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsp22c.dat 130 220 colors sspsp23c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsp24c.dat 76 220 evolutionary flux, supernova & PN rates sspsp3.fit 2880 392 Simple Stellar Population S.E.D. sspsp31c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsp32c.dat 130 220 colors sspsp33c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsp34c.dat 76 220 evolutionary flux, supernova & PN rates sspsp4.fit 2880 392 Simple Stellar Population S.E.D. sspsp41c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsp42c.dat 130 220 colors sspsp43c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsp44c.dat 76 220 evolutionary flux, supernova & PN rates sspsp5.fit 2880 392 Simple Stellar Population S.E.D. sspsp51c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump sspsp52c.dat 130 220 colors sspsp53c.dat 130 220 mass-light ratio, mass in stars & gas, Ly, Mg2 sspsp54c.dat 76 220 evolutionary flux, supernova & PN rates 1gysp1.fit 2880 392 Composite Stellar Population S.E.D. 1gysp11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump 1gysp12c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump 1gysp13c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump 1gysp14c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump consp1.fit 2880 392 Composite Stellar Population S.E.D. consp11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump consp12c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump consp13c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump consp14c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump m50sp1.fit 2880 392 *Composite Stellar Population S.E.D. m50sp11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump m50sp12c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump m50sp13c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump m50sp14c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump ta1sp1.fit 2880 392 Composite Stellar Population S.E.D. ta1sp11c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump ta1sp12c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump ta1sp13c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump ta1sp14c.dat 120 220 Mbol, UBV, K, V colors, Lyman & 400nm jump allcol.hds 133 2100 Concatenated original headers of *?c.dat files which list model parameters filters.res 78 3698 many filter bandpasses of color systems used filt_res.dat 100 3698 reformatted filters.res filters.log 82 85 listing of filter / color systems a0vkurbb.dat 21 3303 *Kurucz (1979) model for Alpha Lyrae. readised.f 70 219 SUN fortran 77 code for reading *.ised files csp.f 124 1317 SUN fortran 77 code for composite stellar population models multicol.f 124 969 SUN fortran 77 code computes colors and magnitudes as a function of redshift taking into account galaxy evolution isedfits.f 80 679 SUN fortran 77 code to convert *.ised files to FITS using the FITSIO library gissel.tar 0 91193 the original tar file from Bruzual -------------------------------------------------------------------------------- Note on m50sp1.fit: During the creation of this file the tau parameter read by the conversion program ised_to_fits.f was passed with value zero. This is contrary to the value of mu=50 and had to be ignored for the creation of this file. A possible error may exist that caused this discrepance and was not recognized at this time. See the allcol.hds file for the values given by the authors. Note on a0vkurbb.dat: 9400K BB interpolation 1.8-200 microns extended to IR (A0V_KUR_BB.SED) Software and Model files: The files are both completed models and programs that run on a SUN workstation under SunOS f77 as explained below. These programs allow the astronomer to calculate his/her own composite stellar population models, colors and magnitudes as a function of redshift taking into account galaxy evolution. The program isedfits.f can convert the binary data files *.ised into FITS and needs FITSIO library routines. The *.ised files are binary files in the original distribution. Filenaming convention: The name of each file is coded according to the parameters used to build the model as follows: ssp = simple stellar population (= instantaneous burst) 1gy = burst of star formation lasting from t=0 to t=1 Gyr con = constant star formation rate = 1.000E-10 Mo/yr tan = exponentially decreasing star formation rate (BC93, eq. 2), where n = e-folding time in Gyr. (1 => 1 Gyr). No gas recycling is assumed. mn = exponentially decreasing star formation rate (BC93, eq. 2), where n = Bruzual (1983) mu parameter (50 => mu = 0.50). Gas recycling is assumed. sp = Salpeter (1955) Initial Mass Function (IMF) sc = Scalo (1986) IMF ms = Miller & Scalo (1979) IMF IMF: Lower mass limit, Upper mass limit 1 = 0.1 125 Mo 2 = 0.1 65 Mo 3 = 0.1 30 Mo 4 = 0.1 2.5 Mo 5 = 2.5 125 Mo In all cases: 1 Mo = Total mass of the model galaxy, except for the case of the constant SFR in which the total mass increases with time. Bruzual's original tar file names exceeded 8 characters and some had file name extensions longer than 3 characters. The names in this distribution have been shortened trying to maintain as much of the original naming convention as possible. File contents: Each *.fit file contains 221 s.e.d.'s covering the wavelength range from 5 A to 100 microns in 1206 steps corresponding to 221 time steps from 0 to 20 Gyr. The s.e.d.'s are given in units of Solar_Luminosity/Angstrom, i.e. by multiplying the listed fluxes by 3.826E33 erg/s, the fluxes are transformed to erg/s/A. Since the models are normalized to 1 Mo total mass, the fluxes should be scaled according to the desired galaxy mass. The FITS files have four extensions. The main data are the s.e.d.'s followed by the wavelength scale, time- dependent quantities, including the time scale, and the IMF used. In addition, for each *.fit file, there are 4 files named *1c.dat, *2c.dat, *3c.dat, and *4c.dat which list several rest frame properties of the model as a function of time. The original headers have been stripped off and concatenated into file allcol.hds. Model Rest-frame Colors, Magnitudes and other Properties: The *?c.dat files list the following quantities as a function of age measured in the rest frame of the model galaxy. The number given in parentheses represent the number of the filter in the sequential lists given in files filters.log and filters.res. The latter contains the filters response functions used by the authors. The zero points of these colors have been computed by requiring that the respective color of the Kurucz (1979) model for alpha Lyrae (extended to the IR) be = 0. The Kurucz model is listed in file a0vkurbb.dat. These files are provided so that the interested user can compare his/her own derivation of the model colors with the results of BC93. The composite stellar populations are computed by a straight forward application of the convolution integral given in equation (1) of BC93. When performing this integral, caution must be taken to insure that the model spectral energy distributions are interpolated at all ages which are relevant for the star formation rate in use (e.g. burst of star formation lasting for 1.5 Gyr, step which is not included in our grid). See also: ftp://legacy.gsfc.nasa.gov/software/fitsio : FITSIO distribution ftp://urania.astroscu.unam.mx/gissel/ : Bruzual's tar file distribution username and password required Byte-by-byte Description of file: *1c.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.6 yr log(age) model age 13- 20 F8.4 mag/solMass Mbol Bolometric mag per 1 Mo galaxy 23- 30 F8.4 mag/solMass U *U (12) magnitude per 1 Mo galaxy 33- 40 F8.4 mag/solMass B *B (14) magnitude per 1 Mo galaxy 43- 50 F8.4 mag/solMass V *V (15) mag per 1 Mo galaxy 53- 60 F8.4 mag/solMass K *K (57) mag per 1 Mo galaxy 63- 70 F8.4 mag/solMass 14-V *1400 (22) - V (15) color 73- 80 F8.4 mag/solMass 17-V *1700 (23) - V (15) color 83- 90 F8.4 mag/solMass 22-V *2200 (24) - V (15) color 93-100 F8.4 mag/solMass 27-V *2700 (25) - V (15) color 101-110 F10.4 mag B(912) Amplitude of Lyman discontinuity 113-120 F8.4 mag B(4000) Amplitude of the 4000 A break -------------------------------------------------------------------------------- Note on U,B,V,K,14-V,17-V,22-V,27-V: The numbers between brackets refer to the filters listed in files filters.log and filters.res. The latter contains the filter response functions used here. The same convention applied to the tables below. Byte-by-byte Description of file: *2c.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.6 yr log(age) model age 13- 20 F8.4 mag U-J U-J color -- U-J = U+ (1) - J+ (2) color 23- 30 F8.4 mag J-F J-F color -- J-F = J+ (2) - F+ (3) color 33- 40 F8.4 mag F-N F-N color -- F-N = F+ (3) - N+ (4) color 43- 50 F8.4 mag U-B U-B color -- U-B = U (12) - B (13) color 53- 60 F8.4 mag B-V B-V color -- B-V = B (14) - B (15) color 63- 70 F8.4 mag V-R V-R color -- V-R = V (15) - R (32) color 73- 80 F8.4 mag V-I V-I color -- V-I = V (15) - I (33) color 83- 90 F8.4 mag V-J V-J color -- V-J = V (15) - J (34) color 93-100 F8.4 mag V-K V-K color -- V-K = V (15) - K (57) color 103-110 F8.4 mag R-I R-I color -- R-I = R (32) - I (33) color 113-120 F8.4 mag J-H J-H color -- J-H = J (55) - H (56) color 123-130 F8.4 mag H-K H-K color -- H-K = H (56) - K (57) color -------------------------------------------------------------------------------- Byte-by-byte Description of file: *3c.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.6 yr log(age) model age 13- 20 F8.4 mag/solMass Mbol Bolometric magnitude per 1 Mo galaxy 23- 30 F8.4 mag/solMass V Vmag/Mo = V(15) magnitude per 1 Mo galaxy 32- 44 E13.6 solMass/mag M/Lb Mass to B (14) light ratio 46- 58 E13.6 solMass/mag M/Lv Mass to V (15) light ratio 60- 72 E13.6 solMass Mstars total mass in stars at this age 74- 86 E13.6 solMass Mgas mass left in gas at this age 88-100 E13.6 solMass/yr SFR star formation rate 103-110 F8.4 --- NLyc/Mo log of number of Ly continuum photons per 1 Mo galaxy 113-120 F8.2 --- EW(Lya) Lyman alpha equivalent width 123-130 F8.4 --- Mg2 magnesium 2 index -------------------------------------------------------------------------------- Byte-by-byte Description of file: *4c.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 F10.6 yr log(age) model age 13- 20 F8.4 mag/solMass Mbol bolometric magnitude per 1 Msun galaxy 22- 34 E13.6 yr-1 b(t) evolutionary flux b(t) stars per year (Renzini and Buzzoni 1986) 36- 48 E13.6 yr-1/solLum B(t) specific evolutionary flux B(t)/yr/Lsun (Renzini and Buzzoni 1986) 50- 62 E13.6 yr-1/solLum SNR supernova rate (per year and solar luminosity) 64- 76 E13.6 yr-1/solLum PNBR planetary nebula birth rate (/yr/Lo) -------------------------------------------------------------------------------- Byte-by-byte Description of file: a0vkurbb.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.0 nm lambda wavelength 10- 21 E12.6 --- F flux in unspecified units -------------------------------------------------------------------------------- Byte-by-byte Description of file: filt_res.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- No_filter ?Number of points in next filter 7- 9 I3 --- pix ?filter pixel number 11- 21 A11 0.1nm lambda ?wavelength (F11.2 and E11.5 mixed) 26- 33 F8.5 --- T ?filter transmission 37-100 A64 --- filter name of next filter -------------------------------------------------------------------------------- Byte-by-byte Description of file: filters.log -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 9- 10 I2 --- ID filter ID 12- 75 A64 --- Ref filter reference 80- 82 I3 --- r_Ref code for reference - not supplied -------------------------------------------------------------------------------- Initial Mass Function: For the convenience of the general user, the parametric expression used for the different IMF's are given below. The constant c refers to the normalization constant which appears in f(m)=c/m**(1+x). The values of c listed below for each segment insure the normalization (total mass = 1 Mo) and continuity of the IMF. These values are given for the case of Mu = 125 Mo. Equivalent values for other values of Mu are listed in the header of the respective files. Salpeter (1955) IMF (1 segment): mass number x from m to m fraction of stars c 1.35 0.10 125.00 1.0000 2.8253 1.7038E-01 totals 1.0000 2.8253 0.3539 Mo/star Scalo (1986) IMF (6 segments): mass number x from m to m fraction of stars c -2.60 0.10 0.18 0.0512 0.3506 1.0053E+02 0.01 0.18 0.42 0.2780 0.9822 1.1443E+00 1.75 0.42 0.62 0.1637 0.3260 2.5293E-01 1.08 0.62 1.18 0.2271 0.2708 3.4842E-01 2.50 1.18 3.50 0.1844 0.1089 4.4073E-01 1.63 3.50 125.00 0.0956 0.0118 1.4819E-01 totals 1.0000 2.0502 0.4878 Mo/star Miller & Scalo (1979) IMF ( 4 segments): mass number x from m to m fraction of stars c 0.25 0.10 1.00 0.3112 0.8837 2.8387E-01 1.00 1.00 2.00 0.1968 0.1419 2.8387E-01 1.30 2.00 10.00 0.3624 0.0957 3.4948E-01 2.30 10.00 125.00 0.1297 0.0076 3.4948E+00 totals 1.0000 1.1289 0.8858 Mo/star Composite Stellar Populations: The sample program csp.f is provided so that the user can produce his/her own CSP models from the SSP models included in GISSEL. The program csp should compile with no problem under SunOS f77 using the following options: host% f77 -O -Nl150 -e -sun4 -o csp csp.f producing the following output: csp.f MAIN csp: copyright: sfr_0: sfr: name_sed: convolve_sed: convol: convol2: chaext: file_header: sfr_exp_rec: dattim: rf_color: filter: color: zerop: filter0: BLOCK DATA filter_0: clyman: b4000: b912: ymag2: linear: iplace: trapz1: zx: t: locate: Note that the original filenames from the authors were shortened, e.g., ssp_ms_1.1color --> sspms11c.dat ssp_ms_4.2color --> sspms42c.dat etc. The program multicolor.f computes colors and magnitudes as a function of redshift taking into account galaxy evolution. The program multicolor should compile with no problem under SunOS f77 using the following options: host% f77 -O -Nl150 -e -sun4 -o multicolor multicolor.f producing the following output: multicolor.f: MAIN multicolor: read_ascii: read_ised: read_gsed: chaext: nread: entry qread: zx: t: rminim: file_header: dattim: evol_ised: z_color: filter: color: zerop: filter0: BLOCK DATA filter_0: linear: iplace: trapz1: sort: dsort: dismod: The *.ised files have been removed from the ADC distribution since they were only easily readable on the Sun workstation. Remarks: The original documentation file was last updated by G. Bruzual on Tuesday October 27th, 1992. The files *5?c.dat had in the data words like inf and NaN embedded. Lines 156, 158, 160-220 were deleted to remove those from the data. The headers and tables were separated in files *.?color --> *?c.dat The concatenated headers are in allcol.hds. Please send any comments to any or all of these: gbruzual@conicit.ve bruzual@igc.org emsca!cida!bruzual@sun.com References: Bruzual, G.B and Charlot, S., 1993, ApJ, 405, 538, hereafter BC93 =1993APJ...405..538B Miller and Scalo, 1979 Salpeter, E.E., 1955, ApJ 121, 161 =1955APJ...121..161S Scalo, 1986 -------------------------------------------------------------------------------- (End) Paul Kuin 1-JULY-1996