SIMBAD references

2004A&A...427..307R - Astronomy and Astrophysics, volume 427307-311 (2004/11-3)

A potential φ Per-type (Be+sdO) binary: FY CMa.

RIVINIUS T., STEFL S., MAINTZ M., STAHL O. and BAADE D.

Abstract (from CDS):

The spectrum of the Be star FYCMa is shown to vary periodically with P=37.26±0.03d. The types of variation, exhibiting transient strong shell phases and a radial-velocity variable HeI emission component, suggest the star to be of the same type as φ Per, i.e. having an evolved hot companion ionizing the outer parts of the primary's circumstellar disc where it faces the hot companion. After φ Per and the candidates 59 Cyg and HR 2142, this is only the fourth promising candidate, although such systems should be relatively abundant. The similarities found between φ Per, 59 Cyg, and FY CMa include a radial velocity-variable HeI emission feature and a phase-locked V/R cycle. An ephemeris is given that allows a test of the proposed recurrent nature of a strong shell feature observed only in a single spectrum at present.

Abstract Copyright: ∼

Journal keyword(s): stars: emission-line, Be - stars: binaries: spectroscopic - stars: individual: FY CMa

Simbad objects: 4

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