Guitarist Dean Wareham formed Luna after leaving the influential indie rock trio Galaxie 500. Luna, which also includes Wareham’s wife, Britta Phillips, returned to the road in 2015 for the first time in a decade and will make its way to the Bay Area for three nights at the Chapel. On tour, the group is revisiting its catalog of bittersweet, intimate tunes from little heard but much beloved albums such as 1995’s “Penthouse” and 1999’s “The Days of Our Nights.”