Table 1 shows the column densities,N H, calculated from equation (3) for typical stellar parameters and mass loss rates as compiled in ref.13.

Binary stars are important to stellar astronomers as knowledge of their motions allows direct calculation of stellar mass and other stellar parameters.

A 2008 study concluded that the WASP-2b system (among others) is a binary star system allowing even more accurate determination of stellar and planetary parameters.

A 2007 study improved stellar and planetary parameters.

However, they have proven useful for making very high precision measurements of simple stellar parameters such as size and position (astrometry) and for imaging the nearest giant stars.

The establishment of stellar parameters helped the astronomers extrapolate the exoplanet's parameters and prove the existence of Kepler-40b.

Currently, the radial velocities and stellar parameters (temperatures, gravities, metallicities) are available in the catalog.

Photometric parallaxes/distances are available separately derived from the stellar parameters and photometry.

Main directions of the scientific research: multicolor photometry of stars, stellar physical parameters, stellar classification, interstellar extinction, interstellar clouds, star clusters, Galactic structure.

With the stellar parameters known, the Kepler team interpreted the Spitzer data to confirm that Kepler-14b was indeed a planet.