267 citations · 996 across the 18 of their papers we have counts for
10 papers · 1 filter
The Milky Way Spiral Arm Pattern
Peter Englmaier, Martin Pohl, Nicolai Bissantz
A complete map of the 3D distribution of molecular (CO) gas was constructed using a realistic dynamical model of the gas flow in the barred potential of the Milky Way. The map show…
3D Distribution of Molecular Gas in the Barred Milky Way
Martin Pohl, Peter Englmaier, Nicolai Bissantz
We present a new model of the three-dimensional distribution of molecular gas in the Milky Way Galaxy, based on CO line data. Our analysis is based on a gas-flow simulation of the…
The Young Star Cluster System in the Antennae: Evidence for a Turnover in the luminosity function
P. Anders, N. Bissantz, L. Boysen +2
The luminosity functions (LFs) of star cluster systems (i.e. the number of clusters per luminosity interval) are vital diagnostics to probe the conditions of star cluster formation…
Large-Scale Model of the Milky Way: Stellar Kinematics and Microlensing Event Timescale Distribution in the Galactic Bulge
Nicolai Bissantz, Victor P. Debattista, Ortwin Gerhard
We build a stellar-dynamical model of the Milky Way barred bulge and disk, using a newly implemented adaptive particle method. The underlying mass model has been previously shown t…
Analysing observed star cluster SEDs with evolutionary synthesis models: Systematic uncertainties
P. Anders, N. Bissantz, U. Fritze-v. Alvensleben +2
We discuss the systematic uncertainties inherent to analyses of observed (broad-band) Spectral Energy Distributions (SEDs) of star clusters with evolutionary synthesis models. We i…
Large-scale Gas Dynamics in the Milky Way
P. Englmaier, O. E. Gerhard, N. Bissantz
We present new gas flow models for the Milky Way inside the solar circle. Using a mass model derived from the COBE/DIRBE maps and clump giant star counts, and using a parametric mo…
Parametric versus non-parametric modelling? Statistical evidence based on P-value curves
N. Bissantz, A. Munk, A. Scholz
In astrophysical (inverse) regression problems it is an important task to decide whether a given parametric model describes the observational data sufficiently well or whether a no…
Gas Dynamics in the Milky Way: Second Pattern Speed and Large-Scale Morphology
Nicolai Bissantz, Peter Englmaier, Ortwin Gerhard
We present new gas flow models for the Milky Way inside the solar circle. To this end we use SPH simulations in gravitational potentials determined from the NIR luminosity distribu…
Spiral arms, bar shape and bulge microlensing in the Milky Way
Nicolai Bissantz, Ortwin Gerhard
A new model for the luminosity distribution in the inner Milky Way is found, using a non-parametric penalized maximum-likelihood algorithm to deproject a dereddened COBE/DIRBE L-ba…
Is Galactic Structure Compatible with Microlensing Data?
James Binney, Nicolai Bissantz, Ortwin Gerhard
We generalize to elliptical models the argument of Kuijken (1997), which connects the microlensing optical depth towards the Galactic bulge to the Galactic rotation curve. When app…