She worked at the Camille Flammarion Observatory at Juvisy-sur-Orge, France, and was General Secretary of the Société astronomique de France.
She published work in the changing surface features of Mars,[1][2][3][4][5] the Great Red Spot on Jupiter, and observations of other planets, minor planets and variable stars and recorded astronomy-related activities and events in numerous articles.
[6] Born as Gabrielle Renaudot, her parents were Jules Renaudot, a sculptor, and Maria-Veronica Concetta Latini, who was Italian (d. 1900).
[7] She married Camille Flammarion, who was also an accomplished astronomer.
Flammarion's first wife, Sylvie Petiaux-Hugo, died in 1919.