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Translation for 'photosphere' from English to French

photosphere

photosphère {f}astron.

• photosphère {f} = photosphere

• A granule is a convection cell in the Sun's photosphere.
• The effective temperature of the photosphere also decreases with increasing distance from the center of the star.
• It was unclear why the temperature of the solar corona is hot (about one million kelvins) compared to its surface (the photosphere), which is only a few thousand kelvins.
• A closely related technique is the expanding photosphere method, which can be used to determine the distance to Type II supernovae.
• However, at the surface this loss of internal radiation pressure had the effect of blowing the outermost layers of the star's photosphere into space.

• The photosphere is that portion of a star that is visible to an observer.
• A current then flows along field lines to the point on the star where the field lines meet the star's photosphere, the current is completed through the photosphere heating it up.
• This method works only if the supernova is close enough to be able to measure accurately the photosphere.
• It also serves to demonstrate that the depth of the photosphere of a star is highly dependent upon the absorptivity of its environment.
• In the Sun, Fraunhofer lines are a result of gas in the photosphere, the outer region of the sun.

• John Ernest Williamson (8 December 1881 – 15 July 1966) invented the "photosphere" from which he filmed and photographed undersea.
• Most radius estimates of the VY CMa are considered as the size for the optical photosphere while the size of the star for the radio photosphere is calculated to be twice that of the size of the star for the optical photosphere.
• The Sun's corona is much hotter (by a factor from 150 to 450) than the visible surface of the Sun: the photosphere's average temperature is around [...] compared to the corona's 1 to 3 million kelvin.
• 7% the luminosity of the Sun from its photosphere at an effective temperature of [...] from its photosphere.
• The Sun's photosphere has a temperature between [...] (with an effective temperature of [...]) and a density of about 3 [...] kg/m3; increasing with depth into the sun.