Search Publications

Rotation in NGC 2264: a study based on CoRoT photometric observations

Bouvier, J.; Micela, G.; Favata, F. +2 more

Rotation is one of the key stellar parameters which undergo substantial evolution during the stellar lifetime, in particular during the early stages. Stellar rotational periods can be determined on the basis of the periodic modulation of starlight produced by non-uniformities on the surface of the stars, due to manifestation of stellar activity. W…

An analysis of CoRoT multicolour photometry of exoplanets

Poretti, E.; Borsa, F.

We analysed the chromatic data of the planetary transits observed with CoRoT to supply homogeneous time series in each of the CoRoT colours. In a first step, we cleaned the chromatic light curves from the contamination of nearby stars and removed outliers and trends caused by anything different from the planetary transits. Then, we simultaneously …

Attempt to detect the granulation signature in the HgMn star HD 175640 from CoRoT light curves

Alecian, G.; Ghazaryan, S.; Harutyunian, H.

HgMn stars are affected by atomic diffusion processes. Because theoretical models based on atomic diffusion require that the atmospheres of ApBp stars have to be much more stable than those of normal stars, the detection or the absence of detection of granulation in them should be an interesting information for the modelling. We would like to addr…