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67 papers · 2 filters
Modeling GD-1 Gaps in a Milky-Way Potential
Raymond G. Carlberg
The GD-1 star stream is currently the best available for identifying density fluctuations, "gaps", along its length as a test of the LCDM prediction of large numbers of dark matter…
Detecting the disruption of dark-matter halos with stellar streams
Jo Bovy
Narrow stellar streams in the Milky Way halo are uniquely sensitive to dark-matter subhalos, but many of these subhalos may be tidally disrupted. I calculate the interaction betwee…
Evidence for a change in the dominant satellite galaxy quenching mechanism at z=1
Michael L. Balogh, Sean L. McGee, Angus Mok +14
We present an analysis of galaxies in groups and clusters at , from the GCLASS and GEEC2 spectroscopic surveys. We compute a "conversion fraction" that…
Anomalous Microwave Emission from Spinning Dust and its Polarization Spectrum
Thiem Hoang
Nearly twenty years after the discovery of anomalous microwave emission (AME) that contaminates to the cosmic microwave background (CMB) radiation, its origin remains inconclusive.…
ATLASGAL-selected massive clumps in the inner Galaxy, II: Characterisation of different evolutionary stages and their SiO emission
T. Csengeri, S. Leurini, F. Wyrowski +12
The processes leading to the birth of high-mass stars are poorly understood. We characterise here a sample of 430 massive clumps from the ATLASGAL survey, which are representative…
Determining Ages of APOGEE Giants with Known Distances
Diane K Feuillet, Jo Bovy, Jon Holtzman +4
We present a sample of local red giant stars observed using the New Mexico State University 1 m telescope with the APOGEE spectrograph, for which we estimate stellar ages and the a…