13 papers · 1 filter
The Age-Thickness Relation as a Tracer of the Merger History of Disk Galaxies
Lekshmi Thulasidharan, Elena D'Onghia, Robert Benjamin +2
In the hierarchical framework of galaxy formation, disk galaxies are shaped by a sequence of mergers and interactions, yet reconstructing this history from observations remains cha…
Unveiling the Milky Way with a Gaia DR3 census of OB-type stars within 2 kpc. I. Tracing local Galactic structure, massive star-forming regions and core-collapse supernova progenitors
Alexis L. Quintana, Kiril Maltsev, Eloisa Poggio +10
O- and B-type stars are young and hot, thereby serving as vital tracers of the star formation and spiral arm structure of the Milky Way. At the dusk of the \textit{Gaia} DR3 era, a…
Rogue Ones: Orbital census of Galactic Cepheids and their Anomalies
Shourya Khanna, Ronald Drimmel, Eloisa Poggio +2
Classical Cepheids (DCEPs) are excellent standard candles expected to trace the spatial and kinematic distribution of the Galaxy's young and dynamically cold stellar disc. Using th…
The flare and spiral structure of the Milky Way's disc as traced by young giant stars
E. Poggio, R. Drimmel, S. Khanna +2
We explore the three-dimensional structure of a sample of 16000 young giant stars in the Galactic disc out to 8 kpc in heliocentric distance. This population traces a…
Classical Cepheids in the Galactic thin disk I. Abundance gradients via non-local thermodynamic equilibrium spectral analysis
Antonino Nunnari, Valentina D'Orazi, Giuliana Fiorentino +23
Classical Cepheids (CCs) have long been considered excellent tracers of the chemical evolution of the Milky Way's young disk. We present a homogeneous, NLTE spectroscopic analysis…
GaiaUnlimited: The old stellar disc of the Milky Way as traced by the Red Clump
Shourya Khanna, Jie Yu, Ronald Drimmel +9
We present an exploration of the Milky Way's structural parameters using an all-sky sample of RC giants to map the stellar density from the Galactic disc beyond 3 kpc. These evolve…