Dartmouth Stellar Evolution Database

The Stellar Evolution Code

The Dartmouth Stellar Evolution Program (DSEP) is a state of the art stellar evolution code and has been featured in several publications. Some of the sources of the input physics used by DSEP are listed on the Related Links page.

A selection of published papers relating to DSEP (most recent first):

Accurate Low-mass Stellar Models of KOI-126
G. Feiden, B. Chaboyer, & A. Dotter (ADS)
The Dartmouth Stellar Evolution Database
A. Dotter, B. Chaboyer, D. Jevremovic, V. Kostov, E. Baron, & J. W. Ferguson (ADS)
Stellar Population Models and Individual Element Abundances I: Sensitivity of Stellar Evolution Models
A. Dotter, B. Chaboyer, J. W. Ferguson, H-c. Lee, G. Worthey, D. Jevremovic, & E. Baron (ADS)
The ACS Galactic Globular Cluster Survey. II. Stellar Evolution Tracks, Isochrones, Luminosity Functions, and Synthetic Horizontal Branch Models
A. Dotter, B. Chaboyer, D. Jevremovic, E. Baron, J. W. Ferguson, A. Sarajedini, & J. Anderson (ADS)
Theoretical Uncertainties in Red Giant Branch Evolution: The Red Giant Branch Bump
S. R. Bjork, & B. Chaboyer (ADS)
Stellar Pollution and [Fe/H] in the Hyades
A. Dotter & B. Chaboyer (ADS)
The Impact of Pollution on Stellar Evolution Models
A. Dotter & B. Chaboyer (ADS)
Theoretical Uncertainties in the Subgiant Mass-Age Relation and the Absolute Age of omega Centauri
B. Chaboyer & L. M. Krauss (ADS)
Heavy-Element Diffusion in Metal-poor Stars
B. Chaboyer, W. H. Fenton, J. E. Nelan, D. J. Patnaude, & F. E. Simon (ADS)

Isochrones and Stellar Evolution Tracks

The isochrones and stellar evolution tracks are tabulated in several photometric systems (see next section for more details).

Isochrones are tabulated on the following age grid:

0.25 - 1 Gyr in 50 Myr intervals
1 - 5 Gyr in 250 Myr intervals
5 - 15 Gyr in 500 Myr intervals

Isochrones with ages below 1 Gyr includes He-burning evolution, including the pre-TP AGB phase, for some ages (the range of ages varies with composition).

Stellar evolution tracks are provided for masses ranging from 0.1 - 4 Msun in most cases with the following mass intervals:

0.1 - 1.8 Msun in steps of 0.05 Msun
1.8 - 3 Msun in steps of 0.1 Msun
3 - 4 Msun in steps of 0.2 Msun

For most compositions, separate HB/AGB tracks are provided for stars that undergo the He flash.

Color-Teff Transformations

This page lists each of the photometric systems the isochrones have been transformed to. The names in each list refer to the suffix found on the corresponding isochrone file.

ACS Galactic Globular Cluster Survey

Isochrones intended for use with the ACS GGC Survey (see Related Links) are available in both synthetic and empirical colors. Both sets include groundbased B, V, and I magnitudes as well F606W and F814W for both ACS-WFC and WFPC2 systems. All HST magnitudes are on the VegaMAG system.

phx - Synthetic magnitudes using Bessell and Sirianni filter curves
cmd - Semi-empirical magnitudes using Vandenberg & Clem BVI with Sirianni transformations

Synthetic Colors

PHOENIX synthetic fluxes (see Related Links for the PHOENIX website) are used below 10,000 K. Castelli & Kurucz synthetic fluxes are used above 10,000 K.

The following are the sources for the filter transmission curves. The table at the bottom of the page lists the filters included in each system.

jc2mass - UBV(RI)c from Bessell (1990) (ADS) and JHKs from 2MASS
hst_acs - HST/ACS-WFC from Sirianni et al. (2005) (ADS; ACS website)
hst_wfpc2 - HST/WFPC2 from Sirianni et al. (2005)
ugriz - SDSS DR 6 flux calibration page
irac - Spitzer IRAC spectral response
hst_wfc3 - HST/WFC3 UVIS and IR channels from J. Kalirai (2009, private communication)

Semi-Empirical Colors

Semi-empirically colors and bolometric corrections from the following sources are also used:

bvri - Vandenberg & Clem (2003) (ADS)
uvby - Clem et al. (2004) (ADS)

Photometric System	Filters (and Combinations)
BV(RI)c	B	V	Rc	Ic
Stromgren	u	v	b	y	c1	m1
SDSS	u	g	r	i	z
Bessell + 2MASS	U	B	V	Rc	Ic	J	H	Ks
HST ACS-WFC	F435W	F475W	F555W	F606W	F625W	F775W	F814W	F850L
HST WFPC2	F336W	F439W	F450W	F555W	F606W	F791W	F814W	F850L
ACS GGC Survey	B	V	Ic	F606W	F814W	F606W	F814W
Spitzer IRAC	[3.6]	[4.5]	[5.8]	[8.0]