Table 1.
Basic data for known double Cepheids.
Component A |
Component B |
||||||||
---|---|---|---|---|---|---|---|---|---|
OGLE ID | Modes | P1 [days] | ![]() |
P2 [days] | ![]() |
![]() |
V [mag] | I [mag] | Refs. |
BLG-CEP-067 | 1O + 1O | 2.610721 | 3.827 | 1.692381 | 2.444 | 0.639 | 16.33 | 14.51 | (3) |
GD-CEP-0291 | F + F | 3.667693 | 3.668 | 3.398977 | 3.399 | 0.927 | 14.65 | 12.70 | (3) |
LMC-CEP-0571 | F + 1O | 3.079937 | 3.080 | 2.100885 | 3.057 | 0.992 | 15.70 | 14.86 | (1), (2) |
LMC-CEP-0835 | F + F | 4.562781 | 4.563 | 2.750956 | 2.751 | 0.603 | 15.25 | 14.46 | (1), (2) |
LMC-CEP-1718 | 1O + 1O | 2.480909 | 3.649 | 1.963683 | 2.869 | 0.786 | 15.19 | 14.51 | (1), (2), (4) |
SMC-CEP-1526 | F + F | 1.804311 | 1.804 | 1.290234 | 1.290 | 0.715 | 16.83 | 16.16 | (2) |
SMC-CEP-2699 | 1O + F | 2.562225 | 3.772 | 2.117341 | 2.117 | 0.561 | 16.06 | 15.38 | (2) |
SMC-CEP-2893 | F + F | 1.321549 | 1.321 | 1.135859 | 1.136 | 0.860 | 16.93 | 16.38 | (2) |
SMC-CEP-3115 | F + F | 1.251945 | 1.252 | 1.159784 | 1.160 | 0.926 | 16.66 | 16.18 | (2) |
SMC-CEP-3674 | F + 1O | 2.896089 | 2.896 | 1.827785 | 2.665 | 0.920 | 15.79 | 15.13 | (2) |
Notes. Period (Pi) and fundamentalized period () are given for each component (i = 1, 2) of a given double Cepheid. LMC-CEP-1718 is the only one already spectroscopically confirmed. References are given in the last column.
References. (1) Alcock et al. (1995), (2) Soszyński et al. (2017), (3) Udalski et al. (2018), (4) Pilecki et al. (2018).
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