Sentences with phrase «stellar effective temperature»

From high - resolution spectroscopy of the star we estimate a stellar effective temperature of Teff = 6100 + / - 150 K, and from high - precision z and B photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be a / R = 6.03 + / - 0.13.

From high - resolution spectroscopy of the star, we find a stellar effective temperature Teff = 5541 \ pm 60 K, a metallicity [Fe / H] = -0.13 \ pm 0.06, and a surface gravity log (g) = 4.59 \ pm 0.10.

We find a stellar effective temperature Teff = 5455 + -100 K, a metallicity of [Fe / H] = 0.01 + -0.04, and a surface gravity of log (g) = 4.4 + -0.1.

In a recent paper titled, «Demarcating circulation regimes of synchronously rotating terrestrial planets within the habitable zone,» my co-authors and I analyze a set of climate model calculations to examine the dependence upon stellar effective temperature of the atmospheric dynamics of planets as they move closer to the inner edge of the habitable zone.

Like Sirius, however, Altair radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Altair.

Like Sirius, however, Vega radiates much more in ultraviolet wavelengths than Sol, and, not surprisingly, the European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Vega.

The European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Kappa Ceti.

The European Space Agency has used ultraviolet spectral flux distribution data to determine stellar effective temperatures and surface gravities, including those of Arcturus.

Not exact matches

We measure equivalent widths of spectral features, derive calibration relations using stars with interferometric measurements, and estimate stellar radii, effective temperatures, masses, and luminosities for the K2 planet hosts.

Here we present a sample of 10,341 likely red - clump stars (RC) from the first two years of APOGEE operations, selected based on their position in color - metallicity - surface - gravity - effective - temperature space using a new method calibrated using stellar - evolution models and high - quality asteroseismology data.

These relations provide a direct link between observables, i.e. effective temperature and characteristics of the oscillation spectra, and stellar properties, i.e. mean density and surface gravity (thus mass and radius).

So far consortia carrying out the different spectroscopic surveys have used different tools to determine stellar parameters of stars from their derived effective temperatures (Teff), surface gravities (log g) and metallicities -LRB-[Fe / H]-RRB- possibly combined with photometric, astrometric, interferometric or asteroseismic information.