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28 papers · 2 filters
Two Orders of Magnitude Variation in the Star Formation Efficiency Across the Pre-Merger Galaxy NGC 2276
Neven Tomicic, Annie Hughes, Kathryn Kreckel +7
We present the first spatially resolved (~0.5 kpc) measurements of the molecular gas depletion time across the disk of the interacting spiral galaxy NGC\,2276, a system…
Three regimes of CO emission in galaxy mergers
Florent Renaud, Frédéric Bournaud, Emanuele Daddi +1
The conversion factor from the observable CO(1-0) luminosity to the mass of molecular gas is known to vary between isolated galaxies and some mergers, but the underlyi…
MOCCA-SURVEY database I. Accreting white dwarf binary systems in globular clusters -- IV. cataclysmic variables -- properties of bright and faint populations
Diogo Belloni, Mirek Giersz, Liliana E. Rivera Sandoval +2
We investigate here populations of cataclysmic variables (CVs) in a set of 288 globular cluster (GC) models evolved with the MOCCA code. This is by far the largest sample of GC mod…
APOGEE DR14/DR15 Abundances in the Inner Milky Way
G. Zasowski, M. Schultheis, S. Hasselquist +14
We present an overview of the distributions of 11 elemental abundances in the Milky Way's inner regions, as traced by APOGEE stars released as part of SDSS Data Release 14/15 (DR14…
Finding Black Holes with Black Boxes -- Using Machine Learning to Identify Globular Clusters with Black Hole Subsystems
Ammar Askar, Abbas Askar, Mario Pasquato +1
Machine learning is a powerful technique, becoming increasingly popular in astrophysics. In this paper, we apply machine learning to more than a thousand globular cluster (GC) mode…
Chemical Cartography with APOGEE: Multi-element abundance ratios
David H. Weinberg, Jon A. Holtzman, Sten Hasselquist +25
We map the trends of elemental abundance ratios across the Galactic disk, spanning R = 3-15 kpc and midplane distance |Z|= 0-2 kpc, for 15 elements in a sample of 20,485 stars meas…