Lines of research: The Milky Way and the Local Group (MWLG)
The Milky Way and the Local Group (MWLG)
Publication
SEGUE-2: Old Milky Way Stars Near and Far
The Sloan Extension for Galactic Understanding and Exploration 2 (SEGUE-2) obtained 128,288 low-resolution spectra (R ~ 1800) of 118,958 unique stars in the...
Self-enrichment in globular clusters: the extreme He-rich populationof NGC 2808
Almost several decades after the discovery of the first multiple populations in galactic globular clusters (GC), the debate on their formation is still...
Separation between RR Lyrae and type II Cepheids and their importance for a distance determination: the case of omega Cen
The separation between RR Lyrae (RRLs) and type II Cepheid (T2Cs) variables based on their period is debated. Both types of variable stars are distance...
Seven young star clusters in the inner region of the Small Magellanic Cloud
We present CCD photometry in the Washington system C and T1 passbands down to T1 ~ 22 in the fields of L35, L45, L49, L50, L62, L63 and L85, seven poorly...
Sextans: the smallest cannibal galaxy discovered until now
A team at the Instituto de Astrofísica de Canarias (IAC) has discovered a new case of galactic cannibalism in the neighbourhood of the Milky Way, which has...
Short-lived radioactivity in the early solar system: The Super-AGB star hypothesis
The composition of the most primitive solar system condensates, such as calcium-aluminum-rich inclusions (CAIs) and micron-sized corundum grains, show that...
SIGNALS, the Star formation, Ionized Gas, and Nebular Abundances Legacy Survey, is a large observing programme designed to investigate massive star formation...
Signatures of the Galactic bar on stellar kinematics unveiled by APOGEE
Bars are common galactic structures in the local universe that play an important role in the secular evolution of galaxies, including the Milky Way. In...
Single Rotating Stars and the Formation of Bipolar Planetary Nebula
We have computed new stellar evolution models that include the effects of rotation and magnetic torques under different hypotheses. The goal is to test whether...