Context : The theoretically studied impact of rapid rotation on stellar evolution needs to be confronted with the results of high resolution spectroscopy-velocimetry observations .
Early type stars present a perfect laboratory for these studies .
The prototype A0 star Vega has been extensively monitored in the last years in spectropolarimetry .
A weak surface magnetic field has been detected , potentially leading to a ( yet undetected ) structured surface .

Aims : The goal of this article is to present a thorough analysis of the line profile variations and associated estimators in the early-type standard star Vega ( A0 ) in order reveal potential activity tracers , exoplanet companions and stellar oscillations .

Methods : Vega was monitored in high-resolution spectroscopy with the velocimeter Sophie/OHP .
A total of 2588 high S/N spectra was obtained during 5 nights ( August 2012 ) at R = 75000 and covering the visible domain .
For each reduced spectrum , Least Square Deconvolved ( LSD ) equivalent photospheric profiles were calculated with a T _ { eff } = 9500 and \log g = 4.0 spectral line mask .
Several methods were applied to study the dynamic behavior of the profile variations ( evolution of radial velocity , bisectors , vspan , 2D profiles , amongst others ) .

Results : We present the discovery of a starspotted stellar surface in an A-type standard star with faint spot amplitudes \Delta { F / Fc } \sim 5 \times 10 ^ { -4 } .
A rotational modulation of spectral lines with a period of rotation P = 0.68 d has clearly been exhibited , confirming the results of previous spectropolarimetric studies .
Either a very thin convective layer can be responsible for magnetic field generation at small amplitudes , or a new mechanism has to be invoked in order to explain the existence of activity tracing starspots .

Conclusions : This first strong evidence that standard A-type stars can show surface structures opens a new field of research and asks the question about a potential link with the recently discovered weak magnetic field discoveries in this category of stars .