15 citations · 26 across the 3 of their papers we have counts for
3 papers
astro-ph.GA2026
Improved measurements of the age of JWST galaxies at z=6-10
M. Lopez-Corredoira, C. M. Gutierrez
From James Webb Space Telescope (JWST) surveys, 31 galaxies with average redshift 7.3 are selected containing large Balmer break, Lyman- break (V-shaped SED versus ). Apart f…
astro-ph2002★ 11 cited
The alpha-element abundances in the most oxygen-poor planetary nebula PN G 135.9+55.9
M. G. Richer, G. H. Tovmassian, G. Stasinska +5
We present extensive new spectroscopy and imaging of PN G 135.9+55.9. We use these data as constraints to photoionization models to derive limits on the oxygen abundance. We find t…
astro-ph2001★ 15 cited
SBS 1150+599A: an extremely oxygen-poor planetary nebula in the Galactic halo?
G. Tovmassian, G. Stasinska, V. Chavushyan +3
We report results of a spectrophotometric study of SBS 1150+599A and discuss the nature of this object based upon our data. Our study shows that SBS 1150+599A is most probably a pl…