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High resolution echelle spectra of PW And (HD~1405) have been taken duringeight observing runs from 1999 to 2002. The detailed analysis of the spectraallow us to determine its spectral type (K2V), mean heliocentric radialvelocity (V_hel = -11.15 km/s) rotational velocity (vsin{i} = 22.6 km/s), andequivalent width of the lithium line 6707.8 AA (EW(LiI) = 273 mAA). Thekinematic (Galactic Velocity (U, V, W)) confirms its membership of the LocalAssociation moving group, in agreement with the age (30 to 80 Myrs) inferredfrom the color magnitude diagram and the lithium equivalent width. Photosphericactivity (presence of cool spots that disturb the profiles of the photosphericlines) has been detected as changes in the the bisectors of the crosscorrelation function (CCF) resulting of cross-correlate the spectra of PW Andwith the spectrum of a non active star of similar spectral type. Thesevariations of the CCF bisectors are related to the variations in the measuredradial velocities and are modulated with a period similar to the photometricperiod of the star. At the same time, chromospheric activity has been analyzed,using the spectral subtraction technique and simultaneous spectroscopicobservations of the H_alpha, H_beta, NaI D_1 and D_2$, HeI D_3, MgI b triplet,CaII H&K, and CaII infrared triplet lines. A flare was observed during the lastobserving run of 2001, showing an enhancement in the observed chromosphericlines. A less powerful flare was observed on 2002 August 23. The variations ofthe chromospheric activity indicators seem to be related to the photosphericactivity. A correlation between radial velocity, changes in the CCF bisectorsand equivalent width of different chromospheric lines is observed with adifferent behaviour between epochs 1999, 2001 and 2002.

Rotational modulation of the photospheric and chromospheric activity in the young, single K2-dwarf PW And