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Stellar activity is the major roadblock on the path to finding trueEarth-analogue planets with the Doppler technique. Thus, identifying newindicators that better trace magnetic activity (i.e. faculae and spots) iscrucial to aid in disentangling these signals from that of a planet's Dopplerwobble. In this work, we investigate activity related features as seen indisk-integrated spectra from the HARPS-N solar telescope. We dividehigh-activity spectral echelle orders by low-activity master templates (asdefined using both log R'HK and images from the Solar Dynamics Observatory,SDO), creating "relative spectra". With resolved images of the surface of theSun (via SDO), the faculae and spot filling factors can be calculated, giving ameasure of activity independent of, and in addition to, log R'HK. We findpseudo-emission (and pseudo-absorption) features in the relative spectra thatare similar to those reported in our previous work on alpha Cen B. In alpha CenB, the features are shown to correlate better to changes in faculae fillingfactor than spot filling factor. In this work we more confidently identifychanges in faculae coverage of the visible hemisphere of the Sun as the sourceof features produced in the relative spectra. Finally, we produce trailedspectra to observe the RV component of the features, which show that thefeatures move in a redward direction as one would expect when tracking activeregions rotating on the surface of a star.

The spectral impact of magnetic activity on disk-integrated HARPS-N solar observations: exploring new activity indicators