Funding for this research was provided by:
Niedersächsisches Ministerium für Wissenschaft und Kultur (QUANOMET)
Science and Technology Facilities Council (ST/M005844/1)
Russian Foundation for Basic Research (14-02-00399)
Russian Foundation for Basic Research (16-52-10069)
Division of Astronomical Sciences (PHY-1305863)
Article History
Received: 27 June 2018
Accepted: 14 March 2019
First Online: 29 April 2019