Four planetary nebulae (PNe) with conspicuous point-symmetric morphology are studied in this paper through high-quality imagery and long-slit echelle...

Long-slit spectroscopy of the extended gas in the Seyfert galaxy NGC 3516 reveals considerable substructure in the narrow emission lines with several...

We have studied the kinematics of the HH 399 jet, which was recently discovered in the Trifid Nebula. The data were obtained in the [N II] 6583 Å line with a...

Near-infrared H2 1-0 5(1) and Brγ velocity curves along the major axis of NGC 253 have revealed a central velocity gradient that is 7 times steeper than that...

Context. The link between how bipolar planetary nebulae are shaped and their central stars is still poorly understood. Aims: This paper investigates the...

Using the Very Large Array (VLA) and the Very Long Baseline Array (VLBA), we have observed water maser emission in the proto-planetary nebula candidate IRAS...

Context. Studying the stellar kinematics of galaxies is a key tool in the reconstruction of their evolution. However, the current measurements of the stellar...

With the steady improvement of the observing capabilities and numerical simulations, an efficient data management of large data volumes has become mandatory...

Mapping millimetre continuum emission has become a key issue in modern multi-wavelength astrophysics. In particular, spectrum imaging at low-frequency...