54 citations · 55 across the 4 of their papers we have counts for
4 papers · 1 filter
SPH simulations of star/planet formation triggered by cloud-cloud collisions
Spyridon Kitsionas, Anthony P. Whitworth, Ralf S. Klessen
We present results of hydrodynamic simulations of star formation triggered by cloud-cloud collisions. During the early stages of star formation, low-mass objects form by gravitatio…
HS2237+8154: On the onset of mass transfer or entering the period gap?
B. T. Gaensicke, S. Araujo-Betancor, H. -J. Hagen +4
We report follow-up observations of a new white dwarf/red dwarf binary HS2237+8154, identified as a blue variable star from the Hamburg Quasar Survey. Ellipsoidal modulation observ…
QSO Photometric Redshift estimation for the XMM-Newton/2dF Survey
S. Kitsionas, E. Hatziminaoglou, I. Georgantopoulos +2
The technique of estimating redshifts using photometric rather than spectroscopic observations has recently received great attention due to its simplicity and the accuracy of the r…
Particle Splitting: A New Method for SPH Star Formation Simulations
Spyridon Kitsionas
We have invented a new algorithm to use with self-gravitating SPH Star Formation codes. The new method is designed to enable SPH simulations to self-regulate their numerical resolu…