We test the modified Newtonian dynamics (MOND) theory with the velocity dispersion profiles of Galactic globular clusters populating the outermost region of the...
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PublicationGlobular clusters in modified Newtonian dynamics: velocity dispersion profiles from self-consistent models
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PublicationHigh-Resolution Spectroscopy of the Yellow Hypergiant ρ Cassiopeiae from 1993 through the Outburst of 2000-2001
We present an overview of the spectral variability of the peculiar F-type hypergiant ρ Cas, obtained from our long-term monitoring campaigns over the past 8.5...
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TalkIAU G5 -- The GALAH survey: science goals and highlights to date
The field of Galactic archaeology has been very active in recent years, with a major influx of data from the Gaia satellite and large spectroscopic surveys. The...
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TalkIAU G5 Talk: Winds of Magnetic Massive Stars
Massive stars (at least eight times as massive as the Sun) possess strong stellar winds driven by radiation. With the advent of the so called MiMeS...
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TalkIAU G5: "Extreme Precision Stellar Spectroscopy"
The new generation of spectrometers designed for extreme precision radial velocities enable correspondingly precise stellar spectroscopy. It is now fruitful to...
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PublicationIntracluster Stellar Population Properties from N-Body Cosmological Simulations. I. Constraints at z = 0
We use a high-resolution collisionless simulation of a Virgo-like cluster in a ΛCDM cosmology to determine the velocity and clustering properties of the diffuse...
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TalkMapping the Sun's upper photosphere with artificial neural networks
In this talk I'll present results from a recent paper in which we have developed a new analysis technique for solar spectra based on artificial neural networks...
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PublicationModeling Tidal Streams in Evolving Dark Matter Halos
We explore whether stellar tidal streams can provide information on the secular, cosmological evolution of the Milky Way's gravitational potential and on the...
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PublicationOn the infant weight loss of low- to intermediate-mass star clusters
Star clusters are born in a highly compact configuration, typically with radii of less than about 1 pc roughly independently of mass. Since the star formation...