Hubble proved Andromeda is a separate galaxy by identifying a Cepheid variable star within it. Cepheid variables have a period-luminosity relationship: longer period means greater brightness. Knowing ...
We present the first results from Citizen ASAS-SN, a citizen science project for the All-Sky Automated Survey for Supernovae (ASAS-SN) hosted on the Zooniverse platform. Citizen ASAS-SN utilizes the ...
Variable stars, notably Cepheids and RR Lyrae, pulsate due to cyclic ionisation of helium in their envelopes, driving periodic expansions and contractions. These pulsation dynamics trace stellar ...
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