124 citations · 811 across the 29 of their papers we have counts for
29 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…
The chemodynamical memory of a major merger in a NIHAO-UHD Milky Way analogue -- I. A golden thread through time and space
Sven Buder, Tobias Buck, Ása Skúladóttir +3
Understanding how past major mergers shaped the Milky Way's present-day structure is a key goal of Galactic archaeology. The Galaxy's chemical and dynamical structure retains the i…
Evidence of Gaia Enceladus experiencing at least two passages around the Milky Way
Ása Skúladóttir, Heitor Ernandes, Diane K. Feuillet +4
One of the major recent breakthroughs has been the discovery of the last Major Merger to happen in the history of the Milky Way. Around 10 Gyr ago the galaxy Gaia Enceladus, with e…
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…
Gaia-Sausage-Enceladus star formation history as revealed by detailed elemental abundances
H. Ernandes, D. Feuillet, S. Feltzing +1
The Gaia-Sausage-Enceladus merger was a major event in the history of the Milky Way. Studies on Milky Way satellite dwarf galaxies show that key elemental abundance patterns, which…
HRMOS White Paper: Science Motivation
Laura Magrini, Thomas Bensby, Anna Brucalassi +52
The High-Resolution Multi-Object Spectrograph (HRMOS) is a facility instrument that we plan to propose for the Very Large Telescope (VLT) of the European Southern Observatory (ESO)…
Extremely metal-poor stars in the Fornax and Carina dwarf spheroidal galaxies
R. Lucchesi, P. Jablonka, Á. Skúladóttir +6
We present our analysis of VLT/UVES and X-shooter observations of six very metal-poor stars, including four stars at [Fe/H] in the Fornax and Carina dwarf spheroidal (…
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…
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…
First stars signatures in high-z absorbers
Stefania Salvadori, Valentina D'Odorico, Andrea Saccardi +2
The first stars were likely more massive than those forming today and thus rapidly evolved, exploding as supernovae and enriching the surrounding gas with their chemical products.…
A 3D view of dwarf galaxies with Gaia and VLT/FLAMES I. The Sculptor dwarf spheroidal
Eline Tolstoy, Ása Skúladóttir, Giuseppina Battaglia +12
We present a new homogeneous survey of VLT/FLAMES LR8 line-of-sight radial velocities (vlos) for 1604 resolved red giant branch stars in the Sculptor dwarf spheroidal galaxy. In ad…
On the dearth of C-enhanced metal-poor stars in the Galactic bulge
Giulia Pagnini, Stefania Salvadori, Martina Rossi +3
The chemical fingerprints of the first stars are retained within the photospheres of ancient unevolved metal-poor stars. A significant fraction of these stellar fossils is represen…
Understanding the origin of CEMP-no stars through ultra-faint dwarfs
Martina Rossi, Stefania Salvadori, Ása Skúladóttir +1
The origin of Carbon Enhanced Metal-Poor (CEMP-no) stars with low abundances of neutron-capture elements is still unclear. These stars are ubiquitous, found primarily in the Milky…
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…
Chemical Evolution of R-process Elements in Stars (CERES). I. Stellar parameters and chemical abundances from Na to Zr
Linda Lombardo, Piercarlo Bonifacio, Patrick François +10
Aims. The Chemical Evolution of R-process Elements in Stars (CERES) project aims to provide a homogeneous analysis of a sample of metal-poor stars ([Fe/H]<-1.5). We present the ste…
Zero-metallicity hypernova uncovered by an ultra metal-poor star in the Sculptor dwarf spheroidal galaxy
Ása Skúladóttir, Stefania Salvadori, Anish M. Amarsi +9
Although true metal-free "Population III" stars have so-far escaped discovery, their nature, and that of their supernovae, is revealed in the chemical products left behind in the n…
Ultra-faint dwarf galaxies: unveiling the minimum mass of the first stars
Martina Rossi, Stefania Salvadori, Ása Skúladóttir
The non-detection of zero-metallicity stars in ultra-faint dwarf galaxies (UFDs) can be used to constrain the Initial Mass Function (IMF) of the first (PopIII) stars by means of a…
Neutron-capture elements in dwarf galaxies III: A homogenized analysis of 13 dwarf spheroidal and ultra-faint galaxies
Moritz Reichert, Camilla J. Hansen, Michael Hanke +3
We present a large homogeneous set of stellar parameters and abundances across a broad range of metallicities, involving classical dwarf spheroidal (dSph) and ultra-faint dSph…
Neutron-capture elements in dwarf galaxies I: Chemical clocks & the short timescale of the r-process
Ása Skúladóttir, Camilla Juul Hansen, Stefania Salvadori +1
The heavy elements (Z>30) are created in neutron-capture processes which happen at very different nucleosynthetic sites. To study them in an environment different from the Milky Wa…
Probing the existence of very massive first stars
S. Salvadori, P. Bonifacio, E. Caffau +4
We present a novel approach aimed at identifying the key chemical elements to search for the (missing) descendants of very massive first stars exploding as Pair Instability Superno…
4MOST Consortium Survey 2: The Milky Way Halo High-Resolution Survey
N. Christlieb, C. Battistini, P. Bonifacio +19
We will study the formation history of the Milky Way, and the earliest phases of its chemical enrichment, with a sample of more than 1.5 million stars at high galactic latitude. El…
The GALAH survey: An abundance, age, and kinematic inventory of the solar neighbourhood made with TGAS
S. Buder, K. Lind, M. K. Ness +31
The overlap between the spectroscopic Galactic Archaeology with HERMES (GALAH) survey & provides a high-dimensional chemodynamical space of unprecedented size. We present a…