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52 papers · 2 filters
Modeling dust emission in the Magellanic Clouds with Spitzer and Herschel
Jeremy Chastenet, Caroline Bot, Karl D. Gordon +4
Dust modeling is crucial to infer dust properties and budget for galaxy studies. However, there are systematic disparities between dust grain models that result in corresponding sy…
Stars with fast Galactic rotation observed in Gaia TGAS: a signature driven by the Perseus arm?
Jason A. S. Hunt, Daisuke Kawata, Giacomo Monari +3
We report on the detection of a small overdensity of stars in velocity space with systematically higher Galactocentric rotation velocity than the Sun by about 20 km s in the…
Gemini/GRACES Spectroscopy of Stars in Triangulum II
K. A. Venn, E. Starkenburg, L. Malo +2
The chemical abundance ratios and radial velocities for two stars in the recently discovered Triangulum II faint dwarf galaxy have been determined from high resolution, medium sign…
Globular Clusters As Tracers of Fine Structure in the Dramatic Shell Galaxy NGC 474
Sungsoon Lim, Eric W. Peng, Pierre-Alain Duc +7
Globular clusters (GCs) are some of the most visible tracers of the merging and accretion history of galaxy halos. Metal-poor GCs, in particular, are thought to arrive in massive g…
Tracing the Hercules stream with Gaia and LAMOST: new evidence for a fast bar in the Milky Way
Giacomo Monari, Daisuke Kawata, Jason A. S. Hunt +1
The length and pattern speed of the Milky Way bar are still controversial. Photometric and spectroscopic surveys of the inner Galaxy, as well as gas kinematics, favour a long and s…
THE NEXT GENERATION VIRGO CLUSTER SURVEY. XIV. Shell feature early-type dwarf galaxies in the Virgo cluster
Sanjaya Paudel, Rory Smith, Pierre-Alain Duc +15
The Next Generation Virgo Cluster Survey is a deep (with a detection limit = 29~mag~arcsec in the band) optical panchromatic survey targeting the Virgo cluste…