DESCRIPTION OF THE AVAILABLE MODEL GRIDS: BD1996 Models published in: Allard, Hauschildt, Baraffe and Chabrier, "Synthetic spectra and Mass Determination of the Brown Dwarf Gl229B" ApJ 465, L123, 1996. Opacity Sampling models H2O: Miller & Tennyson (see also Allard et al. 1994, ApJ 426, L39) TiO: Jorgensen (1994, A&A 284, 179) Grains: Condensation: none Opacity: none BDcond1997 Models published in: "Brown dwarfs and extrasolar planets" BDdusty1997 Rafael Rebolo, Eduardo L. Mart\' \i n, and Maria Rosa Zapatero Osorio editors, ASP Conference Series, Vol. 134, p. 370, (1998). These models were also used in refereed publications: .Allard, Hauschildt, Alexander and Starrfield, Annu. Rev. Astron. Astrophys. 35, 137-177, 1997. .Ruiz, Leggett, and Allard, ApJ, {\bf 491}, L107, 1997. Opacity Sampling models H2O: Miller & Tennyson (see also Allard et al. 1994, ApJ 426, L39) TiO: Jorgensen (1994, A&A 284, 179) Grains: Condensation: yes (BDcond1997, BDdusty1997) Opacity: yes (BDdusty1997) Species: Fe, Al2O3, MgSiO3, Mg2SiO4, ZrO2 (and SiC, C) Treatment: Continuous Distribution of Ellipsoids Diameters: Interstellar (0.025-0.25 micrometer) BDcon1998 Models published in: "The Tenth Cambridge Workshop on Cool Stars, BDdusty1998 Stellar Systems and the Sun", R. A. Donahue and J. A. Bookbinder editors, ASP Conference Series, vol. 154, p.63, (1998). and "Very Low-Mass Stars and Brown Dwarfs in Stellar Clusters and Associations", Los Cancajos, La Palma, Spain, May 11-15, (1998). These models were also used in refereed publications: .Leggett, Allard and Hauschildt, ApJ 509, 836, 1998. .Tinney, Delfosse, Forveille and Allard, A&A 338, 1066, 1998. .Martin, Basri, Brandner, Bouvier, Zapatero Osorio, Rebolo, Stauffer, Allard, Baraffe and Hodgkin, ApJ 509, L113, 1998. .Kirkpatrick, Allard, Bida, Zuckerman, Becklin, Chabrier, and Baraffe, {\it ApJ}, {\bf 519}, 834, 1999. Opacity Sampling models H2O: Partridge & Schwenke (1997, J. Chem. Phys. 106, 4618) TiO: Jorgensen (1994, A&A 284, 179) Grains: Condensation: yes (BDcond1998, BDdusty1998) Opacity: yes (BDdusty1998) Species: Fe, Al2O3, MgSiO3, Mg2SiO4, ZrO2 (and SiC, C) MgAl2O4, CaSiO3, Ca2SiO4, CaMgSi2O6, Ca2Al2SiO7, Ca2MgSiO7 Treatment: Continuous Distribution of Ellipsoids Diameters: Interstellar (0.025-0.25 micrometer) STARdusty1999 Models refreshing the NextGen grid for new TiO opacities by Schwenke (1998). We have also included dust formation and opacities. These models appeared in the refereed publications: . Allard, Hauschildt, and Schwenke, {\sl TiO and H$_2$O absorption lines in cool stellar atmospheres}, {\it ApJ}, {\bf 540}, 1005, 2000. . Leinert, Allard, Richichi and Hauschildt, {\sl The multiple system LHS 1070: a case study for the onset of dust formation in the atmospheres of very low mass stars}, {\it A\&A}, {\bf 353}, 691, 2000. Opacity Sampling models H2O: Miller & Tennyson (see also Allard et al. 1994, ApJ 426, L39) TiO: Langhoff (1997, ApJ 481, 1007), Schwenke (1998, J.Chem.Phys.) Grains: Condensation: yes (BDcond1999, BDdusty1999) Opacity: yes (BDdusty1999) Species: Fe, Al2O3, MgSiO3, Mg2SiO4, ZrO2 (and SiC, C) MgAl2O4, CaSiO3, Ca2SiO4, CaMgSi2O6, Ca2Al2SiO7, Ca2MgSiO7, FeS, MnS, Cu, Ni, Nb, Ti, Fe2O3, Fe3O4, H2O Treatment: Mie -- spherical grains Diameters: Interstellar (0.025-0.25 micrometer) BDcond1999 Models published in Allard, Hauschildt, Alexander, Tamanai and BDdusty1999 Ferguson, {\sl Models, Atmospheres, and Spectra of Brown Dwarfs to Giant Planets}, in proceedings of the workshop: {\sl From Giant Planets to Cool Stars}, Flagstaff, Arizona, June 8-11, (1999) i.e. ASP conference series, volume 212, Caitlin A. Griffith and Mark S. Marley editors, pp. 127-141, 2000. These models will appear or are used in the refereed publications: .Chabrier, G., Baraffe, I., Allard, F., and Hauschildt, P.H., {\sl Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres}, {\it ApJ}, {\bf 542}, 464, 2000. .Allard, Hauschildt, and Schwenke, {\sl TiO and H$_2$O absorption lines in cool stellar atmospheres}, {\it ApJ}, {\bf 540}, 1005, 2000. .Allard, Hauschildt, and Schweitzer, {\sl Spherically symmetric model atmospheres for low mass pre-Main Sequence stars with effective temperatures between 2000 and 6800~K}, {\it ApJ}, {\bf 539}, 366, 2000. .Leggett, Allard, Dahn, Hauschildt, Kerr, and Rayner, {\sl Spectral and Energy Distribution for Disk and Halo M-Dwarfs}, {\it ApJ}, {\bf 535}, 965, 2000. .Basri, Mohanty, Allard, Hauschildt, Delfosse, Martin, Forveille and Goldman, {\sl An Effective Temperature Scale for Late M and L Dwarfs, from Resonance Absorption Lines of Cs I and Rb I}, {\it ApJ}, {\bf 538}, 363, 2000. .Brandner, Zinnecker, Alcal\'a, Allard, Covino, Frink, K\"ohler, Kunkel, Moneti, and Schweitzer, {\sl HST, Adaptive Optics, and ISO observations of weak-line and post-T Tauri stars: Timescales of disk evolution and planet formation}, {\it AJ}, {\bf 120}, 950, 2000. Opacity Sampling models H2O: Partridge & Schwenke (1997, J. Chem. Phys. 106, 4618) TiO: Langhoff (1997, ApJ 481, 1007), Schwenke (1998, J.Chem.Phys.) Coverage of atomic line wings: +-2500A from the core Grains: Condensation: yes (BDcond1999, BDdusty1999, BDsettl1999) Opacity: yes (BDdusty1999, BDsettl1999) Species: Fe, Al2O3, MgSiO3, Mg2SiO4, ZrO2 (and SiC, C) MgAl2O4, CaSiO3, Ca2SiO4, CaMgSi2O6, Ca2Al2SiO7, Ca2MgSiO7, FeS, MnS, Cu, Ni, Nb, Ti, Fe2O3, Fe3O4, H2O Treatment: Mie -- spherical grains Diameters: Interstellar (0.025-0.25 micrometer) BDcond2000 Models published in Allard, Hauschildt, Alexander, Tamanai and BDdusty2000 Schweitzer, {\sl Model Atmospheres of Brown Dwarfs with Dust}, submitted Nov 11, 2000. See paper.ps (submitted draft). These models are also used in the refereed publications: .Leggett, S.K., Allard, F., Dahn, C., Hauschildt, P.H., Kerr, T.H. and Rayner, J., {\sl Spectral and Energy Distribution for Disk and Halo M-Dwarfs}, {\it ApJ}, {\bf 535}, 965, 2000. (See Leggett00.ps) .Schweitzer, A., Gizis, J. E., Hauschildt, P. H., Allard, F. and Reid, I. N., {\sl Analysis of Keck HIRES spectra of early-type dwarfs}, {\it ApJ}, submitted. (See 2MASS_paper.ps) .Barman, Hauschildt and Allard, {\sl Irradiated Planets}, {\it ApJ}, in preparation. .Alexander, D. R., Ferguson, A. J., Tamanai, A., Allard, Hauschildt, P. H. and Vukovich, J. G., {\sl Rosseland and Planck Opacities Down to 10K}, {\it ApJ}, in preparation. .Ludwig, H.-G., Allard, F. and Hauschildt, P. H., {\sl An Hydrodynamical Study of the Convection in M Dwarf's Atmospheres}, {\it ApJ}, in preparation. .Allard, F., Guillot, T., Ludwig, H.-G. and Hauschildt, P. H., {\sl Gravitational Settling in Brown Dwarf Model Atmospheres}, {\it ApJ}, in preparation. Opacity Sampling models H2O: Partridge & Schwenke (1997, J. Chem. Phys. 106, 4618) TiO: Langhoff (1997, ApJ 481, 1007), Schwenke (1998, J.Chem.Phys.) Coverage of atomic line wings: +-15000A from the core (BDcond2000) +- 2500A " " " (BDdusty2000) Grains: Condensation: yes (BDcond2000, BDdusty2000) Opacity: yes (BDdusty2000) Treatment: Mie -- spherical grains Diameters: Interstellar (0.025-0.25 micrometer) Species: * 1 Silicate by Ossenkopf (Mg-silicates + Iron grains) * 2 SiC by Pegourie (SiC/c + SiC/c1) * 3 Enstatite (MgSiO3) by Dorschner (MgSiO3/c) * 4 MgFeSiO4 by Dorschner (Mg2SiO4/c) * 5 Carbon by Rouleau & Martin (C/c) * 6 Troilite(FeS) by Egan & Hilgeman (FeS/c) * 7 Fe by Ordal et al. in 1988 (Fe/c + Fe/c1) * 8 Copper(Cu) by Ordal et al. in 1985 (Cu/c) * 9 Nickel(Ni) by Ordal et al. in 1987 (Ni/c) * 10 Niobium(Nb) by H. of O.C.S.II by Lynch&Hunter (Nb/c) * 11 Titanium(Ti) by Ordal et al. in 1988 (Ti/c+Ti/c1) * 12 Corundum(g-Al2O3) by Koike(wl>7) & Dorschner (Al2O3/c + Al2O3/c3) * 13 Sapphire (a-Al2O3:E//C) by Querry (Al2O3/c1+Al2O3/c2) * 14 Sapphire (a-Al2O3:E+C) by Querry (Al2O3/c1+Al2O3/c2) * 15 Hematite (Fe2O3:E//C) by Querry (Fe2O3/c) * 16 Hematite (Fe2O3:E+C) by Querry (Fe2O3/c) * 17 Magnetite (Fe3O4) by Querry (Fe3O4/c) * 18 Water (H2O:ice) by Pollack(1994) and Hudgins&Sandford in 1993 * 19 Water (H2O:Liq.) by H. of O.C.S.II by Querry (Part1) * 20 ZrO2 by (ZrO2/c) * 21 Magnesium Aluminium Spinel by H. of O.C.S. (MgAl2O4/c) * 22 BaTiO3 (E+C) by Wong (CaTiO3/c) * 23 BaTiO3 (E//C) by Wong (CaTiO3/c) * 24 SrTiO3 by Gervais (CaTiO3/c) * 25 alpha-SiO2 ordinary by Phillip (SiO2/c) * 26 alpha-SiO2 extraordinary by Phillip (SiO2/c) * 27 TiO2 (E//C) by Ribarsky (TiO2/c) * 28 TiO2 (E+C) by Ribarsky (TiO2/c) * 29 Ca2Al2SiO7 by Henning (Ca2Al2SiO7/c) * 30 NaCl by J.E. Eldridge & Edward D. Palik (NaCl/c) where CaSiO3 and Ca2SiO4 use MgSiO3/c and Mg2SiO4/c, CaMgSi2O6 and Ca2MgSiO7 use Ca2Al2SiO7/c, and MnS uses FeS. STARdusty2000 Update to the STARdusty1999 models described above to include all the updates to the dust opacities also used in the BDdusty00 models. These models appeared in the refereed publications: None yet. Opacity Sampling models H2O: Miller & Tennyson (see also Allard et al. 1994, ApJ 426, L39) TiO: Langhoff (1997, ApJ 481, 1007), Schwenke (1998, J.Chem.Phys.) Grains: Condensation: yes Opacity: yes Treatment: Mie -- spherical grains Diameters: Interstellar (0.025-0.25 micrometer) Species: same as in BDdusty2000 grid described above.