7 papers
Can filamentary accretion explain the orbital poles of the Milky Way satellites?
M. S. Pawlowski, P. Kroupa, G. Angus +3
Several scenarios have been suggested to explain the phase-space distribution of the Milky Way (MW) satellite galaxies in a disc of satellites (DoS). To quantitatively compare thes…
Making Counter-Orbiting Tidal Debris: The Origin of the Milky Way Disc of Satellites
M. S. Pawlowski, P. Kroupa, K. S. de Boer
Using stellar-dynamical calculations it is shown for the first time that counter-orbiting material emerges naturally in tidal interactions of disc galaxies. Model particles on both…
Local-Group tests of dark-matter Concordance Cosmology: Towards a new paradigm for structure formation
P. Kroupa, B. Famaey, K. S. de Boer +7
(abridged) Predictions of the Concordance Cosmological Model (CCM) of the structures in the environment of large spiral galaxies are compared with observed properties of Local Grou…
ROSAT X-ray sources in the field of the LMC. III.The log N -- log S of background AGN and the LMC gas
P. Kahabka, K. S. de Boer, C. Bruens
We use 50 (candidate) background X-ray sources (AGN) in the LMC field observed in ROSAT PSPC observations to derive the observed log N - log S relation. We correct for the varying…
ROSAT X-ray sources in the field of the LMC I.Total LMC gas from the background AGN spectral fits
P. Kahabka, K. S. de Boer, C. Bruens
We analyzed a sample of 26 background X-ray sources in a ~60 square degree field of the Large Magellanic Cloud observed with the ROSAT PSPC. The sample has been selected from previ…
HI spectra and column densities toward HVC and IVC probes
B. P. Wakker, P. M. W. Kalberla, H. van Woerden +2
We show 21-cm line profiles in the direction of stars and extragalactic objects, lying projected on high- and intermediate-velocity clouds (HVCs and IVCs). About half of these are…