69 citations · 324 across the 26 of their papers we have counts for
11 papers · 1 filter
Cluster Geometry & Inclinations from Deprojection Uncertainties
Dalia Chakrabarty, Elisabetta De Filippis, Helen Russell
{The determination of cluster masses is a complex problem that would be aided by information about the cluster shape and orientation (along the line-of-sight).} {It is in this cont…
Quantifying Chaos in Models of the Solar Neighbourhood
Dalia Chakrabarty, Ioannis V. Sideris
{} {To quantify the amount of chaos that exists in the local phase space.} {A sample of orbits from four different models of the Solar neighbourhood phase space are analysed by a n…
The Distribution of Dark Matter in the Halo of the early-type galaxy NGC 4636
Dalia Chakrabarty, Somak Raychaudhury
We present the density structure of dark matter in the outer parts (to about 7 effective radii) of the elliptical galaxy NGC 4636, from the radial velocities of 174 globular cluste…
DOPING: a New Non-parametric Deprojection Scheme
Dalia Chakrabarty, Laura Ferrarese
We present a new non-parametric deprojection algorithm DOPING (Deprojection of Observed Photometry using and INverse Gambit), that is designed to extract the three dimensional lumi…
Local Phase Space - Shaped by Chaos?
Dalia Chakrabarty
We attempt to understand the state of the local phase space by comparing simulated 2-D velocity distributions to the distribution that is constructed for the solar neighbourhood, f…
Phase Space Structure in the Solar Neighbourhood
Dalia Chakrabarty
We examine the idea that dynamical parameters can be estimated by identifying locations in the solar neighbourhood where simulated velocity distributions match the observed local d…
Mass Modelling with Minimum Kinematic Information
Dalia Chakrabarty
Mass modelling of early-type systems is a thorny issue. In this paper, we present a new mass modelling formalism for ellipticals that invokes no observations other than the central…
An Inverse Look at the Center of M15
Dalia Chakrabarty
The observed radial and transverse velocities of individual stars in M15 are implemented as inputs to a fully non-parametric code (CHASSIS) in order to estimate the equilibrium ste…
Patterns in the Outer Parts of Galactic Disks
Dalia Chakrabarty
This paper describes test particle simulations of the response of the outer parts of Galactic disks to barring and spiral structure. Simulations are conducted for cold Mestel disks…
Magnetically warped discs in close binaries
James Murray, Dalia Chakrabarty, Graham Wynn +1
We demonstrate that measurable vertical structure can be excited in the accretion disc of a close binary system by a dipolar magnetic field centred on the secondary star. We presen…
A Non-Parametric Estimate of the Mass of the Central Black Hole in the Galaxy
Dalia Chakrabarty, Prasenjit Saha
We estimate the mass of the central black hole in our Galaxy from stellar kinematical data published by Ghez et al. (1998) and Genzel et al. (2000). For this we develop a method, r…