SDSS_DR8.FilPoint table

The FilPoint table gives basic properties of filament points that form spines of filaments.

Table structure

ColumnTypeUCDUnitDescription
filidintmeta.idfilament identification number
pointidintmeta.id
meta.main
unique identification number for a filament point, shared for all filaments
npointsintmeta.numbernumber of filament points in the filament the point belongs to
len_filfloatphys.sizeMpc/hlength of the filament the point belongs to
xdoublepos.cartesian.xMpc/hthe co-moving coordinate x
ydoublepos.cartesian.yMpc/hthe co-moving coordinate y
zdoublepos.cartesian.zMpc/hthe co-moving coordinate z
distdoublepos.distanceMpc/hdistance to the filament point
dxfloatphys.sizeorientation of the filament at that point, the orientation is given as a unit vector
dyfloatphys.sizeorientation of the filament at that point, the orientation is given as a unit vector
dzfloatphys.sizeorientation of the filament at that point, the orientation is given as a unit vector
vmapfloatstat.valuevisit map (level set) value
fdenfloatstat.valueweighted visit map value, filament density
forifloatstat.valuestrength of orientation