Welcome to the database of stellar bolometric corrections

This database provides you with bolometric corrections in any selected filter set, provided with stellar parameters. You can either input stellar parameters manually for single star, or upload a file containing a large number of stars. It is still in the initial phase and under extensive construction. Please be patient if you come across some problems.

Five steps to obtain BCs for your stars:

More information about the filters can be found Here (to be updated).
If you need results in other filter sets, please tell the names or send us the transmission files

2. Choose the spectral libraries to use

a) Library for low-intermediate Teff stars:

ATLAS9 & Phoenix (COMARCS for TP-AGB)
Transition Teff from (low) K to (high) K

ATLAS9 & Phoenix (also for TP-AGB)
Transition Teff from (low) K to (high) K

ATLAS9 only

Phoenix only

ATLAS12 models with two 47Tuc metal contents & Phoenix (COMARCS for TP-AGB)
Transition Teff from (low) K to (high) K

ATLAS12 models with two 47Tuc metal contents & Phoenix (also for TP-AGB) only
Transition Teff from (low) K to (high) K

ATLAS12 models with two 47Tuc metal contents

b) Library for high Teff stars:

ATLAS9 & WMbasic & PoWR

ATLAS9 only

Phoenix only

ATLAS12 models with two 47Tuc metal contents

c) Library for AGB stars:

COMARCS

3. Interstellar extinction

Av = (Extinction curve: Cardelli et al. (1989) + O'Donnell (1994) with RV=3.1.)

The variation of extinction within the filter window, the effect of spectral type, and the non-lineararity as a function of Av amount have been taking into account.
Circumstellar dust for RGB, RSG and TP-AGB are not included yet.

4. Stellar parameters of stars

Specify the stellar parameters:

logL(☉): Teff(K):
logg(cgs, put -100 if mass set):
mass(☉, put -100 if logg set):

Metallicity/abundance:

Z(-100 if not set):
Or
[FeH](-100 if not set):
Or
X(H mass fraction, -100 if not set):
Y(He mass fraction, -100 if not set):
Xc(C mass fraction, optional, -100 if not set):
Xn(N mass fraction, optional, -100 if not set):
Xo(O mass fraction, optional, -100 if not set):

Mdot(optinal): Vinf(optinal):

a) Upload your file:

An example can be found at Here (with corresponding columns given below in default).

b) Specify indices of the columns (starting from 1) for the following parameters:

The number and order of the columns is not a matter. The first line is considered to be the header. Header and auxiliary information lines should start with '#'.
logL(☉): Teff(K):
logg(cgs, put -100 if mass set):
mass(☉, put -100 if logg set):

Metallicity/abundance:

Z(-100 if not set):
Or
[Fe/H](-100 if not set):
Or
X(H mass fraction, -100 if not set):
Y(He mass fraction, -100 if not set):
Xc(C mass fraction, -100 if not set):
Xn(N mass fraction, -100 if not set):
Xo(O mass fraction, -100 if not set):

Mdot(optinal): Vinf(optinal):

5.