12 papers
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…
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…
High-fidelity stellar extinction with Gaia and APOGEE -- I. The method and a new extinction curve
Jie Yu, Luca Casagrande, John A. Taylor +9
The scarcity of high-fidelity extinction measurements remains a bottleneck in deriving accurate stellar properties from Gaia parallaxes. In this work, we aim to derive precision ex…
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…
From Gaia to GaiaNIR: II. A new view of the Milky Way bar
Ã. Jiménez-Arranz, M. Schölch, S. Khanna +9
The Milky Way (MW) hosts a central bar whose pattern speed, orientation, and length remain uncertain, largely due to observational biases and selection effects, despite the transfo…
The Effect of a Non-universal Extinction Curve on the Wesenheit Function and Cepheid Distances
D. M. Skowron, M. L. Fouesneau, R. Drimmel +1
The Wesenheit function is widely used to reduce the effects of interstellar reddening in distance measurements. Its construction, however, relies on the assumption of a universal e…