UX Ari: New Photometry and Longitudinal Asymmetry in Spot Activity Fixed in Orbital Reference Frame

Details UX Ari: New Photometry and Longitudinal Asymmetry in Spot Activity Fixed in Orbital Reference Frame UX Ari: New Photometry and Longitudinal Asymmetry in Spot Activity Fixed in Orbital Reference Frame

Jun 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ibvs.5836....1r&link_type=abstract

Information Bulletin on Variable Stars, 5836, 1.

Computer Science

3

Scientific paper

We present new BV photometry of UX Ari obtained on 23 nights during January-March 2008. From an analysis of the long-term V band photometry available for this star we find strong evidence for the orbital modulation of spot activity in the cool component of UX Ari: the hemisphere facing the companion shows a higher level of spot activity, as indicated by a significantly larger spread in observed brightness, when compared to that away from it.

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