Rosa M. González Delgado & Claus Leitherer, & Timothy Heckman, 1999, Astrophysical Journal Supplements accepted.

These are evolutionary stellar population synthesis models to predict the spectrum of a single-metallicity stellar population, with a spectral sampling of 0.3 Å in five spectral regions between 3700 Å and 5000 Å. The models, which are optimized for galaxies with active star formation, synthesize the profiles of the hydrogen Balmer series (Hb, Hg, Hd, H₈, H₉, H₁₀, H₁₁, H₁₂ and H₁₃) and the neutral helium absorption lines (HeI 4922, HeI 4471, HeI 4388, HeI 4144, HeI 4121,  HeI 4026, HeI 4009 and HeI 3819) for a burst with an age ranging from 1 Myr to 10 Gyr, and different assumptions about the stellar initial mass function (IMF). Continuous star formation models lasting for 1 Gyr are also presented. The input stellar library includes NLTE absorption profiles for stars hotter than 25000 K and LTE profiles for lower temperatures. The effective temperature ranges from 4000 K to 50000 K and the gravity  from log(g) = 0.0 to 5.0. The metallicity is solar.

The full set of models is available for retrieval here below and at our american website http://www.stsci.edu/science/starburst/ .

1. Evolutionary population synthetic spectra

1.1 Burst models at solar metallicty (Z=0.02) with different assumptions about the IMF are available in the gziped tar files

burst-235-1-80-Z02.tar.gz   (IMF slope 2.35, Mlow=1 Msol, Mup=80 Msol)
burst-235-1-30-Z02.tar.gz   (IMF slope 2.35, Mlow=1 Msol, Mup=30 Msol)
burst-235-5-80-Z02.tar.gz   (IMF slope 2.35, Mlow=5 Msol, Mup=80 Msol)
burst-235-10-80-Z02.tar.gz (IMF slope 2.35, Mlow=10 Msol, Mup=80 Msol)
burst-100-1-80-Z02.tar.gz   (IMF slope 1.00, Mlow=1 Msol, Mup=80 Msol)
burst-330-1-80-Z02.tar.gz   (IMF slope 3.30, Mlow=1 Msol, Mup=80 Msol)

1.2 A burst model at metallicity Z=0.001 (1/20 Zsol) is in the gziped tar file

burst-235-1-80-Z001.tar.gz   (IMF slope 2.35, Mlow=1 Msol, Mup=80 Msol)
 

Each of these files contains the results for a burst at different ages, from 0.01 Myr to 1 Gyr;
e.g. b1-235-1-80-Z02 is for a 1 Myr burst.
Burst models are computed for a total burst mass of 10⁶ Msol.

1.3 A continuous star formation model (csf) at solar metallicity (Z=0.02) and for a star formation rate of 1 Msol/yr is in the gziped tar file

csf-235-1-80-Z02.tar.gz   (IMF slope 2.35, Mlow=1 Msol, Mup=80 Msol)

This tar contains the files:

csf-H10-235-1-80-Z02        (covers the spectral range: 3720-3920 Å)
csf-Hd-235-1-80-Z02          (covers the spectral range: 3990-4150 Å)
csf-Hg-235-1-80-Z02          (covers the spectral range: 4300-4400 Å)
csf-He4471-235-1-80-Z02  (covers the spectral range: 4420-4550 Å)
csf-Hb-235-1-80-Z02          (covers the spectral range: 4820-4900 Å)
csf-He4922-235-1-80-Z02  (covers the spectral range: 4900-4950 Å)

Column 1: age (yr)
Column 2: wavelength (Å)
Column 3: logarithm of the total luminosity (erg/s/Å)
Column 4: normalized spectrum
Column 5: logarithm of the stellar luminosity (erg/s/Å)
Column 6: logarithm of the nebular continuum luminosity (erg/s/Å)

The full set of equivalent widths measurements is available in a gziped tar file Ew-models.tar.gz , that contains the following ten files:

Ew-H-burst-235-1-80-Z02.tab    (Ew of the H lines: Hb, Hg, Hd, H8, H9 and H10)
Ew-He-burst-235-1-80-Z02.tab    (Ew of the HeI lines: 4922, 4471, 4388, 4026 and 3819)

Ew-burst-235-1-30-Z02.tab    (Ew of the lines: Hb, Hd, H8, HeI 4471, HeI 4026 and HeI 3819)
Ew-burst-235-5-80-Z02.tab    (Ew of the lines: Hb, Hd, H8, HeI 4471, HeI 4026 and HeI 3819)
Ew-burst-100-1-80-Z02.tab    (Ew of the lines: Hb, Hd, H8, HeI 4471, HeI 4026 and HeI 3819)
Ew-burst-330-1-80-Z02.tab    (Ew of the lines: Hb, Hd, H8, HeI 4471, HeI 4026 and HeI 3819)

Ew-H-csf-235-1-80-Z02.tab    (Ew of the H lines: Hb, Hg, Hd, H8, H9 and H10)
Ew-He-csf-235-1-80-Z02.tab    (Ew of the HeI lines: 4922, 4471, 4388, 4026 and 3819)

Ew-H-burst-235-1-80-Z001.tab    (Ew of the H lines: Hb, Hg, Hd, H8, H9 and H10)
Ew-He-burst-235-1-80-Z001.tab    (Ew of the HeI lines: 4922, 4471, 4388, 4026 and 3819)