23 citations · 88 across the 5 of their papers we have counts for
7 papers
Discovery of five new Galactic symbiotic stars in the VPHAS+ survey
Stavros Akras, Denise R. Gonçalves, Alvaro Alvarez-Candal +1
We report the validation of a recently proposed infrared selection criterion for symbiotic stars (SySts). Spectroscopic data were obtained for seven candidates, selected from the S…
First 3D Morpho-Kinematic model of Supernova Remnants. The case of VRO 42.05.01 (G 166.0+4.3)
Sophia Derlopa, Panos Boumis, Alexandros Chiotellis +2
We present the first three dimensional (3D) Morpho-Kinematic (MK) model of a supernova remnant (SNR), using as a case study the Galactic SNR VRO 42.05.01. We employed the astrophys…
H emission in the low-ionisation structures of the Planetary Nebulae NGC 7009 and NGC 6543
Stavros Akras, Denise R. Gonçalves, Gerardo Ramos-Larios +1
Despite the many studies in the last decades, the low-ionisation structures (LISs) of planetary nebulae (PNe) still hold several mysteries. Recent imaging surveys have demonstrated…
Exploring the differences of integrated and spatially resolved analysis using integral field unit data: The case of Abell 14
Stavros Akras, Hektor Monteiro, Isabel Aleman +3
We present a new approach to study planetary nebulae using integral field spectroscopy. VLT@VIMOS datacube of the planetary nebula Abell 14 is analysed in three different ways by e…
Distance mapping applied to four well-known planetary nebulae and a nova shell
Sebastian Gómez-Gordillo, Stavros Akras, Denise R. Gonçalves +1
Accurate distance estimates of astrophysical objects such as planetary nebulae (PNe), and nova and supernova remnants, among others, allow us to constrain their physical characteri…
Characterisation of the Planetary Nebula Tc 1 Based on VLT X-Shooter Observations
Isabel Aleman, Marcelo L. Leal-Ferreira, Jan Cami +11
We present a detailed analysis of deep VLT/X-Shooter observations of the planetary nebula Tc 1. We calculate gas temperature, density, extinction, and abundances for several specie…