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NGC 346/N66 JHKs photometry
The emission nebula N66 is the brightest HII Region in the Small Magellanic Cloud (SMC), with the stellar association NGC 346 located in its center. The youthfulness of the... -
Extended red(dened) regions in 2MASS
The aim of this paper is to identify extended red regions in the outer galactic plane based on reddening of stars in the near-infrared. We argue that these regions appear... -
Galaxies of J0454-0309 lensing fossil group
We have discovered a strong lensing fossil group (J0454) projected near the well-studied cluster MS0451-0305. Using the large amount of available archival data, we compare J0454... -
Metallicity estimates of M31 globular clusters
We present a new homogeneous set of metallicity estimates based on Lick indices for the old globular clusters of the M31 galaxy. The final aim is to add homogeneous... -
Modelling of Magellanic Cloud C/O stars
Mass loss is one of the fundamental properties of Asymptotic Giant Branch (AGB) stars, and through the enrichment of the interstellar medium, AGB stars are key players in the... -
Proper motions of cool stars in Upper Sco OB
Proper motion measurements of the cool and ultracool populations in the Upper Scorpius OB association are crucial to confirm membership and to identify possible run-away... -
OB associations in IC 1613
Determining the parameters of massive stars is crucial to understand many processes in galaxies and the Universe, since these objects are important sources of ionization,... -
WINGS spectroscopy of 48 galaxy clusters
We present the results from a comprehensive spectroscopic survey of the WINGS (WIde-field Nearby Galaxy-cluster Survey) clusters, a program called WINGS-SPE. The WINGS-SPE... -
Physical properties of VVDS galaxies
We want to derive the mass-metallicity relation of star-forming galaxies up to z~0.9, using data from the VIMOS VLT Deep Survey. The mass-metallicity relation is commonly... -
EROS-2 beat Cepheids in Magellanic Clouds
We present the results of a systematic search of Beat Cepheids (BC) in the Magellanic Clouds from the EROS-2 database. Observations were carried out on the MARLY telescope (ESO... -
Physical parameters of Wolf-Rayet galaxies
The availability of large spectroscopic datasets has opened up the possibility of constructing large samples of rare objects in a systematic manner. The goal of this study is to... -
Radial velocities in A2163
A2163 is among the richest and most distant Abell clusters, presenting outstanding properties in different wavelength domains. X-ray observations have revealed a distorted gas... -
Abundances of 59 red giants in LMC
We have used FLAMES (the Fibre Large Array Multi Element Spectrograph) at the VLT-UT2 telescope to obtain spectra of a large sample of red giant stars from the inner disk of the... -
Variable stars in Cen A
Difference imaging has proven to be a powerful technique for detecting and monitoring the variability of unresolved stellar sources in M 31. Using this technique in surveys of... -
Systematic search for M31 novae from Schmidt plates
This paper reports on the detection of optical novae in our neighbour galaxy M 31 based on digitized historical Tautenburg Schmidt plates. The accurate positions of the detected... -
Stellar population gradients in bulges. II.
We present the analysis of the radial gradients of stellar absorption lines in a sample of 32 bulges of edge-on spiral galaxies, spanning nearly the full Hubble sequence (from... -
NGC 330 Be stars and binaries
Observations of hot stars belonging to the young cluster SMC-NGC 330 and its surrounding region were obtained with the VLT-GIRAFFE facilities in MEDUSA mode. We investigated the... -
Radio continuum spectra of GPS galaxies
Recent studies have shown that a remarkable share of quasars classified in the literature as gigahertz-peaked spectrum (GPS) sources and high frequency peakers (HFPs) are... -
LMXBs in the bulge of M31
We explore the population of X-ray point sources in the bulge of M31 to contrast properties of various subpopulations, such as persistent and transient sources and primordial... -
The VLT-FLAMES Survey of Massive Stars
An analysis is presented of VLT-FLAMES spectroscopy for three Galactic clusters, NGC 3293, NGC 4755 and NGC 6611. Non-LTE model atmosphere calculations have been used to...
