https://www.aanda.org/articles/aa/ref/2012/02/aa16512-11/aa16512-11.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
stellar populationsmilky waybulgeregiontowards
https://www.aanda.org/articles/aa/abs/2004/43/aa0064-04/aa0064-04.html
Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics
planetary nebulaepopulationsdirection