Our measurements fall along the scaling relations between granule size, effective temperature and surface gravity that are predicted by simulations of stellar surface convection. We derive a characteristic horizontal granule size of about 1.2 × 1011 metres, which corresponds to 27 per cent of the diameter of the star. We find that the stellar surface has a complex convective pattern with an average intensity contrast of 12 per cent, which increases towards shorter wavelengths. Our images show a nearly circular, dust-free atmosphere, which is very compact and only weakly affected by molecular opacity. Here we report interferometric images of the surface of the evolved giant star π1 Gruis, of spectral type S5,7. These properties can be inferred from geometric model fitting, but this indirect method does not provide information about the physical origin of the convective cells. Deriving the characteristic properties of convection (such as granule size and contrast) for the most evolved giant and supergiant stars is challenging because their photospheres are obscured by dust, which partially masks the convective patterns. But on the surfaces of giant and supergiant stars there should be only a few large (several tens of thousands of times larger than those on the Sun) convective cells, owing to low surface gravity. Most of our knowledge about stellar convection has come from studying the Sun: about two million convective cells with typical sizes of around 2,000 kilometres across are present on the surface of the Sun-a phenomenon known as granulation.

We propose that the large observed feature is modifying the signature of the convective pattern at the surface of the star in a way that simulations cannot reproduce.Ĭonvection plays a major part in many astrophysical processes, including energy transport, pulsation, dynamos and winds on evolved stars, in dust clouds and on brown dwarfs. The properties of the observed surface features show a stronger contrast and inhomogeneity as predicted by 3D radiative hydrodynamical simulations. The inferred hot spot is probably the top of a giant convection cell although an asymmetric extension of the star cannot be excluded by these interferometric observations alone. We bring new evidence for the presence of a convective pattern in the photosphere of red supergiants. In the higher spatial frequency domain, we observe a significant difference between the observations and the predictions of 3D hydrodynamical simulations. It appears to be superposed on the smaller scale convective pattern. Our interferometric observations at low spatial frequencies are compatible with the presence of a hot spot on the photosphere that has a characteristic width of one stellar radius. We monitored the photosphere of Betelgeuse between 2012 January and 2014 November to look for evolutions that may trigger the outflow. We report new interferometric observations in the infrared H band using the VLTI/PIONIER instrument. We aim to constrain the spatial structure and temporal evolution of the convective pattern on the photosphere and to search for evidence of this link. A link is suspected between the powerful convective motions in Betelgeuse and its mass loss. The proximity of Betelgeuse makes it an appealing target to study its atmosphere, map the shape of its envelope, and follow the structure of its wind from the photosphere out to the interstellar medium. The mass-loss mechanism of cool massive evolved stars is poorly understood. If you want to add location info to your pictures, you need grant the application location permission.Context.Some of features listed above are available not on all devices. The freshest version of Google Camera is only compatible with recent Pixel and Nexus gadgets on Android 7.1.1 and above.Photosphere configuration for creating immersive pictures with nice spherical effect.Photographers use it for closing-up pictures. Lens blur option for adding elegant background blurring (it is also called ‘bokeh’).Slow motion effect for capturing action in epic slow motion video (on some supported gadgets you may achieve up to 240 fps).It is very useful especially in backlit or low-light scenes. HDR+ configuration for capturing wonderful photographs.Video stabilization option for capturing extraordinarily smooth videos even while your hands are shaking.In that way you will make wonderful moving GIFs. You can do it by holding down the shutter button. Smartburst option for capturing a stream of photos in automatic mode.Taking stunning pictures is possible due to the wide functionality of tabled application. You will not miss any beautiful, funny or lovely one with this software. Google Camera is application for catching and capturing moments of your life.

Galaxy s5 photosphere