FY CMa - a candidate φ Per-like Be+sdO binary

Details FY CMa - a candidate φ Per-like Be+sdO binary FY CMa - a candidate φ Per-like Be+sdO binary

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..337..309s&link_type=abstract

The Nature and Evolution of Disks Around Hot Stars, ASP Conference Series, Vol. 337, Proceedings of a meeting held 7-9 July 2004

Computer Science

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Scientific paper

Optical spectra of the Be star FY CMa show transient shell phases and variable radial velocity and shape of He I emission components. Therefore, FY CMa closely resembles the Be+sdO binary φ Per. Moreover these variations in the optical spectrum are consistent with the period of P=37.26 ± 0.03 d derived from the UV N V lines. The variations are due to the Be primary's circumstellar disk, which is ionized where it faces the hot companion. Next to φ Per, 59 Cyg, and possibly HR 2142, FY CMa is only the fourth candidate to the group, although such systems should be relatively common.

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