SIMBAD references

We studied the average orbital modulation of various parameters (γ-ray flux, Hα emission line, optical V band brightness) of the radio- and γ-ray emitting Be/X-ray binary LS I+61°303. Using the Spearman rank correlation test, we found highly significant correlations between the orbital variability of the equivalent width of the blue hump of the Hα and Fermi-LAT flux with a Spearman p-value ∼ 2x10^–5, and the equivalent widths ratio EW_B/EW_R and Fermi-LAT flux with p-value ∼ 9x10^–5. We also found a significant anti-correlation between Fermi-LAT flux and V band magnitude with a p-value ∼7x10^–4. All these correlations refer to the average orbital variability, and we conclude that the Hα and γ-ray emission processes in LS I+61°303 are connected. The possible physical scenario is briefly discussed.