Photospheric and chromospheric activity on the young solar-type star HD 171488 (V889 Herculis)

  title={Photospheric and chromospheric activity on the young solar-type star HD 171488 (V889 Herculis)},
  author={A. Frasca and K. Biazzo and Zs. Kőv{\'a}ri and Ettore Marilli and Osservatorio Astrofisico di Catania and Inaf - Arcetri and Konkoly Observatory and Ege University and Tubitak National Observatory},
  journal={Astronomy and Astrophysics},
Aims. We present the results of contemporaneous spectroscopic and photometric monitoring of the young solar-type star HD 171488 (Prot � 1.337 days) aimed at studying surface inhomogeneities at both photospheric and chromospheric levels. Methods. Echelle FOCES spectra (R � 40000) and Johnson BV photometry have been performed in August 2006, with a good coverage of rotational phases. Spectral type, rotational velocity, metalicity, and gravity were determined with a code developed by us (Rotfit… 

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