Rotation plays a key role in the life cycles of stars with masses above 8 Msun. Hence, accurate knowledge of the rotation rates of such massive stars is critical for understanding their properties and for constraining models of their evolution.This paper investigates the reliability of current methods used to derive projected rotation speeds v sin i from line-broadening signatures in the photospheric spectra of massive stars, focusing on stars that are not rapidly rotating.We use slowly rotating magnetic O-stars with well-determined rotation periods to test the Fourier transform (FT) and

Recent observations with the GTC take us a step closer to conditions in the early Universe

The project, carried out with the OSIRIS camera of the Gran Telescopio CANARIAS, has undertaken the deepest and most detailed census of the massive supercluster Cygnus OB2, one of the largest and nearest known 'nurseries' of stars

The new connection for the RedIRIS-NOVA and the Canarian R+D+i network is now established

The event will be retransmitted through streaming at: http://www.iac.es/rediris-nova/ Full press release in spanish version

The Instituto de Astrofísica de Canarias (IAC) and the Science and Cosmos Museum present: Do puppets dream about the Universe?, an educational puppet show with the participation of The Root Puppets, creators of Trancas y Barrancas.