21 citations · 25 across the 6 of their papers we have counts for
5 papers · 1 filter
IPHAS and the symbiotic stars. I. Selection method and first discoveries
R. L. M. Corradi, E. R. Rodríguez-Flores, A. Mampaso +7
The study of symbiotic stars is essential to understand important aspects of stellar evolution in interacting binaries. Their observed population in the Galaxy is however poorly kn…
Initial Data Release from the INT Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS)
E. A. Gonzalez-Solares, N. A. Walton, R. Greimel +47
The INT/WFC Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS) is an imaging survey being carried out in H-alpha, r' and i' filters, with the Wide Field Camera (WFC)…
The S2N2 metallicity calibrator and the abundance gradient of M 33
K. Viironen, G. Delgado-Inglada, A. Mampaso +2
We introduce the log(Ha/[SII]6717+6731) vs. log(Ha/[NII]6583) (S2N2) diagnostic diagram as metallicity and ionisation parameter indicator for HII regions in external galaxies. The…
The metallicity gradient of M 33: chemical abundances of HII regions
L. Magrini, J. M. Vilchez, A. Mampaso +2
We present spectroscopic observations of a sample of 72 emission-line objects, including mainly HII regions, in the spiral galaxy M 33. Spectra were obtained with the multi-object,…
HST and VLT observations of the Symbiotic Star Hen 2-147
M. Santander-Garcia, R. L. M. Corradi, P. A. Whitelock +5
We investigate the dynamics of the nebula around the symbiotic star Hen 2-147, determine its expansion parallax, and compare it with the distance obtained via the Period-Luminosity…