Despite the traditional images we will all imagine, the Milky Way is not quite the flat disc shape we thought it was: research revealed in February confirmed proof of serious warping around the galaxy’s edges, and now second research has backed up the thought of a twisted Milky Way.
A team from the University of Warsaw in Poland has put a brand new three-dimensional map of our galaxy collectively, utilizing distances between classical Cepheid variable stars as markers. These young, big stars are 100 to 10,000 times brighter than the Sun, and that brightness permits scientists to detect them even at great distances, through interstellar dust and clouds.
Such stars additionally produce common light pulses, and the staff used this variability to find out the position of 2,431 Cepheids dotted via the Milky Way.
“Our map reveals the Milky Way disk just isn’t flat. It’s warped and twisted,” says astrophysicist Przemek Mroz.
The analysis is indebted to the Optical Gravitational Lensing Experiment or OGLE, a telescope and astronomical project that, thus far, has more than doubled the variety of known classical Cepheids within the galaxy – akin to bettering the resolution on a digital picture.
Data from OGLE has augmented with classical Cepheids noticed within the General Catalogue of Variable Stars (GCVS), the All-Sky Automated Survey (ASAS), the All-Sky Automated Survey for Supernovae (ASAS-SN), the Asteroid Terrestrial-Impact Last Alert System (ATLAS), and the Gaia Data Release 2 (Gaia DR2) catalog.