3 papers
astro-ph.SR2025
CGCS 6306, another X-ray-emitting asymptotic giant branch star confirmed to be a symbiotic binary
Jaroslav Merc, Martín A. Guerrero, Jesús A. Toalá +1
A number of asymptotic giant branch (AGB) stars are known to exhibit UV excess and/or X-ray emission. These have been considered signposts of a hot white dwarf (WD) companion in a…
astro-ph.SR2024
Y Gem, a symbiotic star outshone by its asymptotic giant branch primary component
M. A. Guerrero, D. A. Vasquez-Torres, J. B. Rodríguez-González +2
A considerable number of asymptotic giant branch (AGB) stars exhibit UV excess and/or X-ray emission that indicates a binary companion. AGB stars are so bright that they easily out…
astro-ph.SR2020
Detailed Studies of IPHAS sources. II. Sab 19, a true planetary nebula and its mimic crossing the Perseus Arm
Martin A Guerrero, Roberto Ortiz, Laurence Sabin +2
The INT Photometric H Survey (IPHAS) has provided us with a number of new-emission line sources, among which planetary nebulae (PNe) constitute an important fraction. Here we pr…