New UCD list

[Arnold Rots]

Andrea Preite Martinez wrote:
> ...
>   You first suggested em.veloc.radio to account for the 2 conventions to
> derive velocities from spectra (optical and radio conventions). If
> nobody
> ever applies the optical convention to a radio spectrum (or vice versa),
> then we can live with spect.veloc;em.opt and spect.veloc;em.radio
>   What do you think?
> 

O yes!  The optical definition needs to be (and is) used for plenty of
radio observations.
Do you distinguish between LSR, geocenter, barycenter, topocenter,
Galactic center (to name the most popular ones)?

> ...
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Arnold H. Rots                                Chandra X-ray Science Center
Smithsonian Astrophysical Observatory                tel:  +1 617 496 7701
60 Garden Street, MS 67                              fax:  +1 617 495 7356
Cambridge, MA 02138                             arots at head.cfa.harvard.edu
USA                                     http://hea-www.harvard.edu/~arots/
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