3 papers
astro-ph.SR2019
NIKA2 observations around LBV stars: emission from stars and circumstellar material
J. Ricardo Rizzo, A. Ritacco, C. Bordiu
Luminous Blue Variable (LBV) stars are evolved massive objects, previous to core-collapse supernova. LBVs are characterized by photometric and spectroscopic variability, produced b…
astro-ph.SR2019
The peculiar chemistry of the inner ejecta of Eta Carina
C. Bordiu, J. R. Rizzo
We investigated continuum and molecular line emission of four species (CO, HCN, HCN, and HCO) at 0.8 mm in the inner arcsec around Eta Car, using ALMA archival observati…
astro-ph.SR2018
A slowly expanding torus associated with the candidate LBV MGE 042.0787+00.5084
C. Bordiu, J. R. Rizzo, A. Ritacco
The luminous blue variable (LBV) phase is a poorly understood stage in the evolution of high mass stars, characterized for its brevity and instability. The surroundings of LBV star…