24 citations · 134 across the 24 of their papers we have counts for
24 papers
CRIMSONS: An Online Tool for Modeling Chemical Enrichment with Stochastic IMF Sampling
Martina Rossi, Lapo Querci, Stefano Ciabattini +14
Chemical enrichment is a universal process shaped by several interconnected factors, including stellar feedback, the nature of chemical polluters, and the underlying distribution o…
HRMOS: A High-Resolution Multi-Object Spectrograph for the VLT
Laura Magrini, Thomas Bensby, Sofia Randich +174
This White Paper presents the scientific rationale and instrument concept for HRMOS (High-Resolution Multi-Object Spectrograph), a next-generation instrument proposed for the ESO V…
TOPoS VII. Age-metallicity relation in the Galactic halo and assembly of the Milky Way
P. Bonifacio, Y. Lebreton, I. Koutsouridou +8
One technique for determining stellar ages is to compare the position of a star in the Hertzsprung-Russell diagram to theoretical stellar evolutionary tracks. The sub-giant evoluti…
Chemical signatures from the first stars embedded in metal-poor gas in galaxies at cosmic dawn
Clara L. Pollock, Kasper E. Heintz, Elka Rusta +15
The first generation of stars formed from pristine, neutral hydrogen gas. The most massive of these exploded as supernovae within a few million years of their birth, producing the…
NEFERTITI: Linking early galaxy formation to the assembly of the Milky Way
Ioanna Koutsouridou, Stefania Salvadori, Ása Skúladóttir +5
We use a new implementation of the NEFERTITI galaxy formation model, coupled to high-resolution Caterpillar dark-matter simulations of Milky Way (MW) analogues, to connec…
The Pristine HeII Emitter near GN-z11: Constraining the Mass Distribution of the First Stars
Elka Rusta, Stefania Salvadori, Roberto Maiolino +6
The properties of the first metal-free stars remain largely unknown, and so far, the only data-driven constraints on their mass distribution (IMF) come from near-field cosmology. H…
Metal-polluted Population III galaxies and How to Find Them
Elka Rusta, Stefania Salvadori, Viola Gelli +4
Observing Population III (hereafter PopIII) galaxies, the hosts of first-generation stars, remains challenging even with the JWST. The current few candidates have been identified t…
Large databases of metal-poor stars corrected for three-dimensional and/or non-local thermodynamic equilibrium effects
I. Koutsouridou, Á. Skúladóttir, S. Salvadori
Early chemical enrichment processes can be revealed by the careful study of metal-poor stars. In our Local Group, we can obtain spectra of individual stars to measure their precise…
Revisiting inelastic Cu+H collisions and the non-LTE Galactic evolution of copper
S. Caliskan, A. M. Amarsi, M. Racca +4
The Galactic evolution of copper remains poorly understood, partly due to the strong departures from local thermodynamic equilibrium (LTE) affecting Cu I lines. A key source of unc…
On the origin of the - quenching boundary
Andrea Cattaneo, Paola Dimauro, Ioanna Koutsouridou
We have considered a phenomenologically motivated model in which galaxies are quenched when the energy output of the central black hole exceeds a hundred times the gravitational bi…
Linking high-z and low-z: Are We Observing the Progenitors of the Milky Way with JWST?
Elka Rusta, Stefania Salvadori, Viola Gelli +2
The recent JWST observation of the Firefly Sparkle at offers a unique opportunity to link the high- and the low- Universe. Indeed, the claim of it being a Milky Way (MW)…
Unveiling the (in)consistencies among the galaxy stellar mass function, star formation histories, satellite abundances and intracluster light from a semi-empirical perspective
Hao Fu, Francesco Shankar, Mohammadreza Ayromlou +16
In a hierarchical, dark matter-dominated Universe, stellar mass functions (SMFs), galaxy merger rates, star formation histories (SFHs), satellite abundances, and intracluster light…
Hidden Population III Descendants in Ultra-Faint Dwarf Galaxies
Martina Rossi, Stefania Salvadori, Ása Skúladóttir +2
The elusive properties of the first (Pop III) stars can be indirectly unveiled by uncovering their true descendants. To this aim, we exploit our data-calibrated model for the best-…
On the Pair-Instability Supernova origin of J1010+2358
Ása Skúladóttir, Ioanna Koutsouridou, Irene Vanni +4
The first (Pop III) stars formed only out of H and He and were likely more massive than present-day stars. Massive Pop III stars in the range 140-260 M are predicted to end…
True Pair-instability Supernova Descendant: Implications for the First Stars' Mass Distribution
Ioanna Koutsouridou, Stefania Salvadori, Ása Skúladóttir
The initial mass function (IMF) of the first Pop III stars remains a persistent mystery. Their predicted massive nature implies the existence of stars exploding as pair-instability…
Characterising the true descendants of the first stars
Irene Vanni, Stefania Salvadori, Ása Skúladóttir +2
The metal-poor stars in the Galactic halo are thought to show the imprints of the first (PopIII) stars, and thus provide a glance at the first episodes of star formation. In this w…
The energy distribution of the first supernovae
I. Koutsouridou, S. Salvadori, Á. Skúladóttir +3
The nature of the first Pop III stars is still a mystery and the energy distribution of the first supernovae is completely unexplored. For the first time we account simultaneously…
PISN-explorer: hunting the descendants of very massive first stars
D. S. Aguado, S. Salvadori, A. Skúladóttir +6
The very massive first stars () were fundamental to the early phases of reionization, metal enrichment, and super-massive black hole formation. Among them, thos…
Probing the link between quenching and morphological evolution
Ioanna Koutsouridou, Andrea Cattaneo
We use a semianalytic model of galaxy formation to compare the predictions of two quenching scenarios: halo quenching and black-hole (BH) quenching. After calibrating both models s…
Testing the key role of the stellar mass-halo mass relation in galaxy merger rates and morphologies via DECODE, a novel Discrete statistical sEmi-empiriCal mODEl
Hao Fu, Francesco Shankar, Mohammadreza Ayromlou +19
The relative roles of mergers and star formation in regulating galaxy growth are still a matter of intense debate. We here present our DECODE, a new Discrete statistical sEmi-empir…
Bulge formation through disc instability -- I
Timothée Devergne, Andrea Cattaneo, Frédéric Bournaud +6
We use simulations to study the growth of a pseudobulge in an isolated thin exponential stellar disc embedded in a static spherical halo. We observe a transition from later to earl…
GalICS 2.1: a new semianalytic model for cold accretion, cooling, feedback and their roles in galaxy formation
Andrea Cattaneo, Ioanna Koutsouridou, Edouard Tollet +2
Dekel & Birnboim06 proposed that the mass-scale that separates late-type and early-type galaxies is linked to the critical halo mass for the propagation of a stable shock and showe…
Bursting and quenching in satellite galaxies
Ioanna Koutsouridou, Andrea Cattaneo
The difference in stellar metallicity between red and blue galaxies with the same mass constrains the timescale over which red galaxies ceased to form stars. Here we investigate th…
Local disc model in view of Gaia DR1 and RAVE data
K. Sysoliatina, A. Just, I. Koutsouridou +8
We test the performance of the semi-analytic self-consistent Just-Jahreiß disc model (JJ model) with the astrometric data from the Tycho-Gaia Astrometric Solution (TGAS) sub-catalo…