The Duplicity of Large Amplitude SX Phoenicis Star CY Aquarii

Authors: Zhou, A-Y.; Fu, J-N.; Jiang, S-Y.

Source: Astrophysics and Space Science, Volume 268, Number 4, 1999 , pp. 397-406(10)

Publisher: Springer

Buy & download fulltext article:


Price: $47.00 plus tax (Refund Policy)


New photoelectric times of maximum light of the large amplitude SX Phoenicis star CY Aquarii are analyzed together with times of maximum light in the literature. The general shape of the fitted curve of the observed minus calculated (O-C) times of maximum light suggest the duplicity of the variable star, which causes long-term period variations in the light-time. The period changes of CY Aqr are probably consequences of a continuously increasing period combined with the light-time effect in a binary system. The secondary companion is less massive. Some spectroscopic orbital elements are derived from the O-C diagram.

Document Type: Regular Paper

Affiliations: Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing, 100012, P.R. China; E-mail:

Publication date: January 1, 1999

Related content


Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page