tokens: Research at Armagh Observatory is a grant aided by the N. Ireland Department of Culture, Arts and Leisure. M.M. is funded by the Leverhulme trust. We thank Richard Harrison for important discussion and an anonymous referee for insightful comments. M.M. thanks Kamalam Vanninathan, Astrid Veronig and Zhenghua Huang for fruitful discussions on this manuscript. We are grateful to Vasyl Yurchyshyn for providing us with the BBSO images. We thank STFC for the support via ST/J001082/1.
ner_tags: O O B-Observatory I-Observatory O O O O O O B-Location I-Location B-Organization I-Organization I-Organization I-Organization I-Organization I-Organization B-Person O O O O B-Organization I-Organization O O B-Person I-Person O O O O O O O O O O B-Person O B-Person I-Person B-Person I-Person O B-Person I-Person O O O O O O O O O O B-Person I-Person O O O O O B-Observatory O O O B-Organization O O O O B-Grant