Sentences with phrase «effective temperature»

Why is this so much warmer than the 255 K effective temperature of the thermal radiation emitted to space?

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.

For each star, we made a cross-identification to the Kepler Input Catalog58 (KIC) and restricted the analysis to stars on the main sequence with effective temperatures between 5,100 and 6,000 K (the same range as used by Shibayama et al. 16).

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.

Our targets include 30 exoplanets that are excellent targets for transmission spectroscopy, with sizes ranging from sub-Neptune to super-Jupiter and effective temperatures between 600 and 2,800 K.

Depending on the breed, when building your kennel, you will find that most dogs need to be in effective temperatures, factoring in wind chill and humidity, greater than 45 degrees F, but not more than 80 degrees F. Probably 75 degrees F is ideal, but you should check with your veterinarian for specific medical advice.

This will clearly result in more papers trying to explain this fact on subjects such as climate sensitivity, as well as whether or not CFCs caused more warming than originally thought, radiation of heat into space as earth's effective temperature increases, and whether the saturation of absorption of EMR by CO2 in the atmosphere actually fits the logrithmic curve.

The emissivity is combined with the surface effective temperature, sometimes called the skin temperature, in the radiative transfer equation.

GPI, like all direct imaging instruments, is most sensitive to planets that orbit farther away from their stars and those are have hot effective temperatures.

So influential was the heat that Di Grassi conceded his win was largely down to effective temperature management.

Model simulations indicate that the snow - ice interface temperature or alternatively the 6 GHz brightness temperature is a closer proxy for the 50 GHz effective temperature than the snow surface or air temperature

Thus the Martian effective temperature was way high, so the Martian greenhouse effect came out as way low, surface temperature minus effective.

After launch, large thermal gradients due to solar heating developed within the hot load, making it difficult to determine from the thermistor readings the average effective temperature, or the temperature the radiometer sees.

Appeal's window shutters are available in a range of different colours and finishes to allow light to flood into your home through summer whilst still giving privacy when its needed, and also offer effective temperature control against the cold during the winter months.

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.

From spectroscopy of the star we estimate a stellar effective temperature of $ 5171 + / - 36 K, and from high - precision B, R and I photometry of the transit we constrain the ratio of the semi-major axis and the stellar radius to be 6.07 + / - 0.14.

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.

Although models by different research groups agree that thick clouds can explain the red spectrum, they predict dramatically different effective temperatures, ranging from 1100K to 1600K.

The researchers note that in such a thin layer, the water molecules can't move around very much, and so their effective temperature is much lower than — 17 °C, perhaps close to — 45 °C, the proposed phase transition between HDL and LDL water.

«Energies on the order of an electron volt are typical on an atomic basis and correspond to an effective temperature on the order of 10,000 kelvins.

KELT report a G2 star with an effective temperature of 5770 ± 50 K, a surface gravity (log g) of 4.39 ± 0.05, and a mass and radius of 1.09 ± 0.05 and 1.10 ± 0.08 in solar units, whereas WASP report a G3 star with effective temperature of 5700 ± 150 K, a surface gravity of 4.5 ± 0.2, and a mass and radius of 1.05 ± 0.08 and 1.11 ± 0.05.

It is a giant star of the spectral type K2III [3] with an effective temperature of 4,638 [8] kelvins.

The red line shows the effective temperature forcing of greenhouse gases and aerosols (converted to CO2), and the blue line shows the forcing from both those manmade sources and natural factors, like solar radiation.

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.

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.

If confirmed, any of these would be among the coolest known YMG members and would help to determine the effective temperature at which young brown dwarfs cross the L / T transition.

The star has an effective temperature of 5757 $ \ pm $ 85 K and a log g of 4.32 $ \ pm $ 0.09.

By treating the star as an idealized energy radiator known as a black body, the luminosity L and radius R can be related to the effective temperature Teff by the Stefan — Boltzmann law:

However, we also specifically show how high - contrast AO and speckle imaging observations detect companions at larger separations ($ \ theta \ geq $ 0.02 - 0.05») that are missed by the spectroscopic technique, provide additional information for characterizing the companion and its potential contamination (e.g., PA, separation, $ \ Delta $ m), and cover a wider range of primary star effective temperatures.

[17] The star is radiating 1.5 [10] times the Sun's luminosity from its photosphere at an effective temperature of 6,149 K. [11]

By combining our atmospheric characterisation with the age and metallicity constraints arising from the probable membership to the AB Doradus moving group, we find that CFBDSIRJ214947.2 - 040308.9 is probably a 4 - 7 Jupiter masses free - floating planet with an effective temperature of ~ 700K and a log g of ~ 4.0, typical of the late T - type exoplanets that are targeted by direct imaging.

We derived the Lbol of the components and compared them with theoretical evolutionary models to estimate the masses and effective temperatures.

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

[16] It has 2.6 [16] times the mass of the Sun, three times the Sun's radius, [6] and an effective temperature of 9,355 K in its outer atmosphere.