691 citations · 8.2k across the 147 of their papers we have counts for
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Infrared stellar populations in the central parts of the Milky Way galaxy
Jacco Th. van Loon, G. F. Gilmore, A. Omont +7
Near- and mid-IR survey data from DENIS and ISOGAL are used to investigate the structure and formation history of the inner 10 degree (1.4 kpc) of the Milky Way galaxy. Synthetic b…
Kinematic outliers in the LMC: constraints on star-star microlensing
HongSheng Zhao, Rodrigo Ibata, Geraint Lewis +1
Although a decade of microlensing searches towards the Large Magellanic Cloud (LMC) has detected 13-25 possible microlensing events, the nature and the location of the lenses, bein…
A New Mass Degeneracy in Gravitational Lenses: Is there a crisis between a large and the time delay by a large lens halo?
HongSheng Zhao, Bo Qin
Isothermal models and other simple smooth models of dark matter halos of gravitational lenses often predict a dimensionless time delay much too small to be comfortable with…
Intrinsic Degeneracy of Gravitational Lens Time Delays: the case for a simple quadruple system in CDM cosmology
HongSheng Zhao, Bo Qin
A degeneracy in strong lens model is shown analytically. The observed time delays and quasar image positions might {\it not} uniquely determine the concentration and the extent of…
Dynamical limits on galactic winds, halo machos and intergalactic globular clusters
HongSheng Zhao
We argue that any violent galactic winds following early epoch of star bursts would significantly weaken the potentials of galaxies, and leave lasting signatures such as a lowered…
The Galactic Bar
Ortwin Gerhard
The Milky Way has a barred bulge. This article summarizes the current understanding of the main structural parameters and pattern speed of the bar, and compares predicted values fo…