The commands on spectroscopic data cover various domain in the
database:
- The command
mk
- is used to query the MK spectral types
- The command
mks
- is used to query the selected MK spectral types
- The command
spt
- is used to query the spectral types in one dimension
- The command
vsn
- is used to query the rotational velocities
- The command
irv
- is used to query the radial velocities
- The command
mrv
- is used to query the mean radial velocities
- The command
gpo
- is used to query the radial velocities obatined with an objective prism
- The command
rfs
- is used to query the radial velocities obatined with a focal reducer
- The command
orb
- is used to query the elements of spectroscopic binaries
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