1.7k citations · 9.5k across the 105 of their papers we have counts for
103 papers
Extreme N-emitters at high-redshift: signatures of supermassive stars and globular cluster or black hole formation in action?
R. Marques-Chaves, D. Schaerer, A. Kuruvanthodi +9
[Abridged] Using the JWST/NIRSpec observations from CEERS we found an extreme N-emitter, CEERS-1019 at z=8.6782 showing intense NIV and NIII emission. From the observed rest-UV and…
N-enhancement in GN-z11: First evidence for supermassive stars nucleosynthesis in proto-globular clusters-like conditions at high redshift ?
C. Charbonnel, D. Schaerer, N. Prantzos +5
Unusually high N/O abundance ratios were recently reported for a very compact, intensively star-forming object GN-z11 at from JWST/NIRSpec observations. We present an empi…
Search strategies for supermassive stars in young clusters and application to nearby galaxies
A. Kuruvanthodi, D. Schaerer, M. Messa +4
Supermassive stars (SMS) with masses , formed by runaway collisions in young, massive, and dense star clusters have been invoked as a possible soluti…
Lithium, masses, and kinematics of young Galactic dwarf and giant stars with extreme [/Fe] ratios
S. Borisov, N. Prantzos, C. Charbonnel
Recent spectroscopic explorations of large Galactic stellar samples stars have revealed the existence of red giants with [/Fe] ratios that are anomalously high, given their rela…
Discovery of a Metal-Poor Red Giant Star with the Highest Ultra-Lithium Enhancement
Jeremy Kowkabany, Rana Ezzeddine, Corinne Charbonnel +10
We present the discovery of 2MASS J05241392-0336543 (hereafter J0524-0336), a very metal-poor ([Fe/H]=-2.43 +- 0.16), highly r-process-enhanced ([Eu/Fe]= +1.34 +- 0.10) Milky Way h…
CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
G. Ottoni, S. Udry, D. Ségransan +11
Context. Following the first discovery of a planet orbiting a giant star in 2002, we started the CORALIE radial-velocity search for companions around evolved stars (CASCADES). We p…