uvby photometry of theta Tucanae

theta Tucanae (HR 139, V=6.11, A7 IV) is a binary with a delta Scuti primary that was the subject of several photometric monitoring campaigns during the 1970s and again in the...杜鹃座θ星（HR 139，V=6.11，光谱型A7 IV）是一个双星系统，其主星为盾牌座δ型变星（delta Scuti），曾在20世纪70年代以及后续阶段多次成为测光监测计划的研究对象。