188 citations · 496 across the 17 of their papers we have counts for
17 papers
The Low- Splash Population in the Milky Way
Lais Borbolato, João A. S. Amarante, Hélio D. Perottoni +5
The Milky Way in-situ halo, also known as the Splash, consists of old (age 10 Gyr), metal-rich ([Fe/H] ), high- stars, i.e., thick disk-like chemistry, on halo-like…
Phase spirals induced by the gas warp
Shuyu Wang, Anthony G. A. Brown, Victor P. Debattista +1
The discovery of the phase space spirals in the Solar neighborhood in Gaia Data Release 2 has prompted various attempts to understand their origin. A source of bending waves, which…
The edge of the Milky Way's star-forming disc: Evidence from a 'U-shaped' stellar age profile
Karl Fiteni, Stuart Robert Anderson, Victor. P. Debattista +7
We leveraged reliable age and distance estimates from LAMOST-DR3 and APOGEE-DR17+AstroNN combined with \gaia\ data to perform a detailed analysis of the stellar age distribution in…
GASTRO library II: Exploring Chemical Bimodalities in Disk Galaxies with GSE-like Mergers and Massive Star-forming Clumps
João A. S. Amarante, Chervin F. P. Laporte, Victor P. Debattista +10
We use several smoothed particle hydrodynamics+N-body models as part of the GASTRO library to study the role of high-density star-forming clumpy regions and a single merger on the…
Reply to Comment on "A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp"
Yang Huang, Qikang Feng, Tigran Khachaturyants +7
In this reply, we present a comprehensive analysis addressing the concerns raised by Dehnen et al. (2024) regarding our recent measurement of the disk warp precession using the `mo…
A slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp
Yang Huang, Qikang Feng, Tigran Khachaturyants +7
The shape of the dark matter (DM) halo is key to understanding the hierarchical formation of the Galaxy. Despite extensive efforts in recent decades, however, its shape remains a m…
Azimuthal metallicity variations, spiral structure, and the failure of radial actions based on assuming axisymmetry
Victor P. Debattista, Tigran Khachaturyants, Joao A. S. Amarante +3
We study azimuthal variations in the mean stellar metallicity, <[Fe/H]>, in a self-consistent, isolated simulation in which all stars form out of gas. We find <[Fe/H]> variations c…
Exploring the Evolution of Massive Clumps in Simulations that Reproduce the Observed Milky Way α-element Abundance Bimodality
Bethany R. Garver, David L. Nidever, Victor P. Debattista +2
The Milky Way stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars (8 Gyr) with a lower abundance of elements, while…
The imprint of clump formation at high redshift. II. The chemistry of the bulge
Victor P. Debattista, David J. Liddicott, Oscar A. Gonzalez +11
In Paper I we showed that clumps in high-redshift galaxies, having a high star formation rate density (Σ_SFR), produce disks with two tracks in the [Fe/H]-[α/Fe] chemical space, si…
The pattern speeds of vertical breathing waves
Tigran Khachaturyants, Victor P. Debattista, Soumavo Ghosh +2
We measure and compare the pattern speeds of vertical breathing, vertical bending, and spiral density waves in two isolated N-body+SPH simulations, using windowed Fourier transform…
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
G. Gilmore, S. Randich, C. C. Worley +165
The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100,000 stars, including large representat…
The Gaia-ESO Public Spectroscopic Survey: Implementation, data products, open cluster survey, science, and legacy
S. Randich, G. Gilmore, L. Magrini +161
In the last 15 years different ground-based spectroscopic surveys have been started (and completed) with the general aim of delivering stellar parameters and elemental abundances f…
How stars formed in warps settle into (and contaminate) thick discs
Tigran Khachaturyants, Leandro Beraldo e Silva, Victor P. Debattista
In recent years star formation has been discovered in the Milky Way's warp. These stars formed in the warp (warp stars) must eventually settle into the plane of the disc. We use an…
Age dissection of the vertical breathing motions in Gaia DR2: evidence for spiral driving
Soumavo Ghosh, Victor P. Debattista, Tigran Khachaturyants
Gaia DR2 has revealed breathing motions in the Milky Way, with stars on both sides of the Galactic mid-plane moving coherently towards or away from it. The generating mechanism of…
Box/peanut-shaped bulges in action space
Victor P. Debattista, David J. Liddicott, Tigran Khachaturyants +1
We introduce the study of box/peanut (B/P) bulges in the action space of the initial axisymmetric system. We explore where populations with different actions end up once a bar form…
Geometric properties of galactic discs with clumpy episodes
Leandro Beraldo e Silva, Victor P. Debattista, Tigran Khachaturyants +1
A scenario for the formation of the bi-modality in the chemical space [/Fe] vs [Fe/H] of the Milky Way was recently proposed in which -enhanced stars are produced early and q…
Drivers of disc tilting I: Correlations and possible drivers for Milky Way analogues
Samuel W. F. Earp, Victor P. Debattista, Andrea V. Macciò +3
The direction of the spin vectors of disk galaxies change over time. We present the tilting rate of a sample of galaxies in the NIHAO suite of cosmological hydrodynamical simulatio…