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We investigated the prospects for systematic searches of white dwarfs at lowGalactic latitudes, using the VLT Survey Telescope (VST) H$\alpha$ PhotometricSurvey of the Galactic plane and Bulge (VPHAS+). We targeted 17 white dwarfcandidates along sightlines of known open clusters, aiming to identifypotential cluster members. We confirmed all the 17 white dwarf candidates fromblue/optical spectroscopy, and we suggest five of them to be likely clustermembers. We estimated progenitor ages and masses for the candidate clustermembers, and compared our findings to those for other cluster white dwarfs. Awhite dwarf in NGC 3532 is the most massive known cluster member (1.13M$_{\odot}$), likely with an oxygen-neon core, for which we estimate an$8.8_{-4.3}^{+1.2}$ M$_{\odot}$ progenitor, close to the mass-divide betweenwhite dwarf and neutron star progenitors. A cluster member in Ruprecht 131 is amagnetic white dwarf, whose progenitor mass exceeded 2-3 M$_{\odot}$. We stressthat wider searches, and improved cluster distances and ages derived from dataof the ESA Gaia mission, will advance the understanding of the mass-lossprocesses for low- to intermediate-mass stars.

A search for white dwarfs in the Galactic plane: the field and the open cluster population