Hierarchical Galaxy formation in the Local Universe
Hierarchical Galaxy formation in the Local Universe
Hierarchical Galaxy formation in the Local Universe
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Radial velocities are<br />
not enough to constra<strong>in</strong><br />
<strong>the</strong> sense of motion of<br />
<strong>the</strong> orbit: Proper<br />
motions from SDSS<br />
were used to constra<strong>in</strong><br />
orbital motion<br />
A low <strong>in</strong>cl<strong>in</strong>ated (i= 20 ±5º),<br />
almost circular (e=0.10±0.05),<br />
PROGRADE orbit<br />
Distance and<br />
k<strong>in</strong>ematical data are<br />
not enough to constra<strong>in</strong><br />
<strong>the</strong> position of <strong>the</strong> ma<strong>in</strong><br />
body of <strong>the</strong> parent<br />
galaxy: progenitor can<br />
be <strong>in</strong> 100 >l >200<br />
Peñarrubia, MartínezDelgado, Rix et al. 2005,<br />
ApJ, 629,85
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