Stellar2026-03-122 minarXiv:2603.11748expressThe Pulse of Cepheids Without a SpectrographA Cepheid is a star that breathes: it expands and contracts with a period of a few days, and its brightness changes along with its size.V. Hocdé·P. Moskalik·N. Nardetto·P. Kervella·B. Pilecki·R. Smolec·G. Pietrzyński·W. Gieren·G. Hajdu·A. Gallenne·M. C. Bailleul·G. Bras·P. Wielgórski·L. Breuval·A. Mérand·R. S. Rathour·F. Espinoza-Arancibia·W. Kiviaho·B. Apostolova·K. SivkovaAlbert EinsteinCecilia Payne-GaposchkinDavid Charbonneautransit methodphotometry👍👎☆SimplePopularAdvanced