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The present paper is devoted to the construction of a catalog of isolatedgalaxy pairs extracted from the HyperLEDA extragalactic database. The radialvelocities of the galaxies in the pairs are in the range $[3000,16000]$km.s$^{-1}$. In order to get an unbiased pair catalog as complete as possible,we have limited the absolute magnitude of the galaxies to $M \leq-18.5$). Thecriteria used to define the isolated galaxy pairs are the following: 1)Velocity criterion: radial velocity difference between the pair members $\DeltaV<500$ km.s$^{-1}$; 2) Interdistance criterion: projected distance between themembers $r_p<1$ Mpc; 3) Reciprocity criterion: each member is the closestgalaxy to the other one, which excludes multiplets; 4) Isolation criterion: wedefine a pair as isolated if the ratio $\rho=r_3/r_p$ of the projected distanceof the pair to its closest galaxy (this one having a velocity difference lowerthan 500 km.s$^{-1}$ with respect to the pair) and the members projectedinterdistance $r_p$ is larger than 2.5. We have searched for these closestgalaxies first in HyperLEDA M-limited source catalog, then in the full one. Wehave managed not to suppress the small number of pairs having close-by butfaint dwarf galaxy companions. The galaxy pair catalog lists the value of$\rho$ for each isolated pair. This method allows the user of the catalog toselect any isolation level (beyond the chosen limit $\rho>2.5$). Our finalcatalog contains 13114 galaxy pairs, of which 57\% are fairly isolated with$\rho>5$, and 30 \% are highly isolated with $\rho \geq 10$.

A catalog of isolated galaxy pairs limited to absolute magnitude -18.5 drawn from HyperLEDA database