stdGrid: Standard grid for mass and radius estimation

Description Usage Format Source

Description

The standard grid for mass and radius determination through a maximum likelihood technique. The grid is computed assuming the solar scaled mixing-length value.

Usage

1

Format

A data frames containing 9 variables:

Teff

The effective temperature of the star (in K).

logg

The logarithm of the surface gravity of the star (in cm s^-2).

FeH

The metallicity [Fe/H] of the star.

Dni

The large frequency separation for the star (in unit of solar large frequency separation).

nimax

The frequency of maximum oscillation power for the star (in unit of solar frequency of maximum oscillation power).

M

The mass of the star (in unit of solar mass).

R

The radius of the star (in unit of solar radius)

logAge

The logarithm of the age of the star (in yr).

pcAge

The ratio between the age of the star and the time needed for central hydrogen depletion for that star.

Source

G. Valle, M. Dell'Omodarme, P.G. Prada Moroni, and S. Degl'Innocenti (2014). Uncertainties in grid-based estimates of stellar mass and radius. SCEPtER: Stellar CharactEristics Pisa Estimation gRid. A&A, 561, A125.

G. Valle, M. Dell'Omodarme, P.G. Prada Moroni, and S. Degl'Innocenti (2014). Uncertainties in asteroseismic grid-based estimates of stellar ages. SCEPtER: Stellar CharactEristics Pisa Estimation gRid. A&A, accepted.


SCEPtER documentation built on March 29, 2021, 5:08 p.m.