Hα spectropolarimetry of RY Tauri and PX Vulpeculae
Aims: To detect line effects using spectropolarimetry in order to find evidence of rotating disks and their respective symmetry axes in T Tauri stars. Methods...
Hα spectropolarimetry of the B[e] supergiant GG Carinae
Aims. We study the geometry of the circumstellar environment of the B[e] supergiant star GG Car. Methods: We present observations acquired using the IAGPOL...
Hβ spectroscopy of the high-inclination black hole transient Swift J1357.2−0933 during quiescence
Swift J1357.2−0933 is a transient low-mass X-ray binary hosting a stellar-mass black hole. The source exhibits optical dips and very broad emission lines during...
IACUB - a New Echelle Spectrograph for Use at the Observatorio del Roque-De
An uncrossed echelle spectrograph has been constructed in a collaboration between the Queen's University of Belfast and the Instituto de Astrofísica de Canarias...
IC 10: More evidence that it is a blue compact dwarf
We present optical spectroscopy of H Ii regions in the Local Group galaxy IC 10 and UBVR photometry of foreground stars in three fields towards this galaxy...
Identification of red high proper-motion objects in Tycho-2 and 2MASS catalogues using Virtual Observatory tools
Aims: With available Virtual Observatory tools, we looked for new M dwarfs in the solar neighbourhood and M giants with high tangential velocities. Methods...
Identification of red supergiants in nearby galaxies with mid-IR photometry
Context. The role of episodic mass loss in massive-star evolution is one of the most important open questions of current stellar evolution theory. Episodic mass...
Identifying the best iron-peak and α-capture elements for chemical tagging: The impact of the number of lines on measured scatter
Aims: The main goal of this work is to explore which elements carry the most information about the birth origin of stars and, as such, which are best suited for...
Identifying two groups of massive stars aligned in the l 38° Galactic direction
Context. Recent near-infrared data have contributed to unveiling massive and obscured stellar populations in both new and previously known clusters in our...