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Table 4

Comparison of the characteristic time scales of IGR J21343+4738 with other Be/X-ray binaries.

X-ray Spectral Disc-loss P orb T V/R T disc Reference
source type episodea (days) (year) (year)

IGR J21343+4738 B1V-IV yes 0.5-0.8 4–5 This work
4U 0115+634 B0.2V yes 24.3 0.5–1 3–5 1,2
RX J0146.9+6121 B1III-V no 3.4 3
V 0332+53 O8-9V no 34.2 1 4
X-Per O9.5III yes 250 0.6–2 7 5,6,7
RX J0440.9+4431 B1III-V yes 1.5–2 >10 8
1A 0535+262 O9.7III yes 111 1–1.5 4–5 9,10,11
IGR J06074+2205 B0.5IV yes 4–5 12
RX J0812.4-3114 B0.5III-V yes 81.3 3–4 13
4U 1145-619 B0.2III no 187 3 14
4U 1258-61 B2V yes 132 0.36 15
SAX J2103.5+4545 B0V yes 12.7 1.5–2 16

Notes. Porb is the orbital period, TV/R is the time needed to complete a V/R cycle, and Tdisc is the time for the formation and dissipation of the disc.

(a)

By disc-loss episodes we mean periods when the EW(Hα) was seen to be positive.

Reference. (1) Negueruela & Okazaki (2001); (2) Reig et al. (2007); (3) Reig et al. (2000) ; (4) Negueruela et al. (1998); (5) Lyubimkov et al. (1997) ; (6) Delgado-Martí et al. (2001); (7) Clark et al. (2001); (8) Reig et al. (2005) ; (9) Clark et al. (1998); (10) Haigh et al. (2004); (11) Grundstrom et al. (2007) ; (12) Reig et al. (2010b); (13) Reig et al. (2001); (14) Stevens et al. (1997) ; (15) Corbet et al. (1986) ; (16) Reig et al. (2010a).

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