Table 1
Parameters of the Cepheid V1334 Cyg and its close companion.
| Primary (Cepheid) | Secondaryf | ||||||||||||
 a
|
b
|
b
|
Sp. Typec | P pul c |
 d
|
d e | Sp. Type | P orb | T 0 | e | a1sini | ω | f(M) |
| (days) | (mas) | (pc) | (days) | (days) | (AU) | (rad) | (M⊙) | ||||||
|
|
|||||||||||||
| 5.87 | 4.46 | 4.66 | F2Ib | 3.333 | 0.534 | 683 | – | 1937.5 | 2 443 607 | 0.197 | 2.46 | 3.95 | 0.529 |
Notes., , : mean apparent V, K and H magnitudes. Sp. Type: spectral type. Ppul: period of pulsation. : mean angular diameter. d: distance. Porb: orbital period. T0: time passage through periastron. e: eccentricity of the orbit. a1 sini: projected semi-major axis of the orbit of the Cepheid about the center of mass of the system. ω: argument of periastron. f(M): spectroscopic mass function.
Reference.
From the 2MASS catalogue (Cutri et al. 2003).
From Samus et al. (2009).
From the surface brightness relation of Kervella et al. (2004a).
From the P-L relation of Bono et al. (2002).
From Evans (2000).
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