We describe an algorithm for matching two-dimensional coordinate lists. Such matching should be immune to translation, rotation, scaling and flipping. We assume that coordinate lists may be only partially overlapping and we allow some random perturbations in the lists. Our goal is to match enough points to be able to derive a coordinates transformation with high confidence. The implementation d...

This paper describes a new protocol and open–source system that is designed to solve a significant problem — how to manage and organize individual and group schedules in a cross-platform manner. In addition, the design was created to allow for interoperability and extensibility in the protocol and functionality of the system, and discussion is given on how to create an extensible protocol while...

We compiled a catalogue of infrared star clusters in the Galaxy, which are most of them embedded. It condenses the growing literature information. We also include in the sample infrared stellar groups which are less dense than star clusters, such as those embedded in the dark clouds Taurus-Auriga and Chamaleon I. We provide galactic and equatorial coordinates, angular dimensions, different desi...

Time-resolved spectra in the 410 700 nm range have been obtained to investigate 10 stars which are classified as suspected chemically peculiar stars in The General Catalogue of Ap and Am stars by Renson et al. (1991) or in the latest literature. Among the studied stars, HD20629 presents metal abundances which are significantly different from main sequence star values and it should be classified...

We present deep, wide-field, Ks-band (2.14 μm) images towards 87 southern massive star formation regions traced by methanol maser emission. Using point-spread function fitting, we generate 2.14μm point source catalogues (PSCs) towards each of the regions. For the regions between 10◦ < l < 350◦ and |b| <1, we match the 2.14 μm sources with the GLIMPSE point source catalogue to generate a combine...

We present proper motion (μ) catalog of 5,078,188 stars in 49 Optical Gravitational Lensing Experiment II (OGLE-II) Galactic bulge fields, with the total area close to 11 square degrees. The proper motion measurements are based on 138 − 555 I-band images taken during four observing seasons: 1997-2000. The catalogue stars are in the magnitude range 11 < I < 18 mag. In particular, the catalogue i...

The first variable star catalogue in a giant elliptical galaxy NGC 5128 (Centaurus A) is presented. Using multi-epoch observations with ISAAC at the VLT we have detected 1504 red variables in two halo fields covering 10.46 arcmin square. For the variables with at least 10 good measurements, periods and amplitudes were determined using Fourier analysis and non-linear sine-curve fitting algorithm...